Overclock.net › Forums › Volt Mods › General Volt Mods › Graphics Cards Volt Mods › Nvidia GTX 780Ti Hard Volt Mod
New Posts  All Forums:Forum Nav:

Nvidia GTX 780Ti Hard Volt Mod - Page 3

post #21 of 104
Thread Starter 
Quote:
Originally Posted by PhIlLy ChEeSe StEaK View Post

I was asking, and yes I read the thread can yo be more condescending to people! He was not clear in his statement I ask cause I want to do the Mod, Another question for the OP I saw in other Mods that there are things that need to be removed on the card to make the MOD work? Yours doesn't? IN the 780 owners thread, there linked to Kingpin cooling?
The 780s I don't know about the 780ti's is what this is for. Which brand card and model do you have? I think the Asus 780TI DCII has to have resistors removed for the mod to work as far as this mod goes on the other references this should work without removing any other items. The kingpin cooling link I have seen and got some info off there during my research, also info from hwbot and ocn member FTW420. The way I have done which was both have worked flawlessly and did not have to have anything removed. If you would like to add more variable resitors for mem voltage etc that you would have to work on researching and figuring out. I did the mod because 1.21 volts isn't enough for me on water and didn't feel I was really pushing my cards the way some $700 cards should be. LIke in the OP this was done with EVGA GTX 780Ti Referenece cards and for the most part all the cards except any custom pcb cards should be the same. The 780s though are totally different then the TI's though as the TI's are built off the Titan PCB where the 780s can be used with software mods to achieve the high voltage without hard mods.
900D
(32 items)
 
250D
(11 items)
 
 
CPUMotherboardGraphicsGraphics
Intel Core i7 3930K RAMPAGE IV Extreme EVGA TITAN X EVGA TITAN X 
GraphicsGraphicsRAMHard Drive
EVGA TITAN X EVGA TITAN X Corsair Dominator Platinum 16GB 2133 Samsung 830 
Hard DriveHard DriveHard DriveCooling
Western Digital Green Caviar Samsung 850 EVO  Western DIgital Black  EK Supremecy Nickle Plexi 
CoolingCoolingCoolingCooling
Alphacool 480 Monsta Radiator EK Coolstream XT480 EK Coolstream XT240 Corsair SP120 Fan 
CoolingCoolingCoolingCooling
Lamptron CW611 Liquid Cooling Controller EK Rampage 4 Extreme CSQ Block Swiftech MCP35x EK Nickle Plexi Ram blocks 
CoolingOSMonitorMonitor
Alphacool Nexxos ST30 Windows 7 Ultimate 64bit Samsung UD590 28in 4K Samsung UD590 28in 4K 
MonitorKeyboardPowerCase
Samsung UD590 28in 4K Razor Blackwidow Ultimate EVGA 1600G2 Corsair 900D  
MouseMouse PadAudioOther
Razor Naga 2014 Steelseries XL  Tritton AX720 Custom MDPC Sleeving Color X/Black 
CPUMotherboardGraphicsRAM
Intel 4790K Asus Maximus Vi Impact XFX R9 295x2 G Skill Trident X 2x8GB 2400 MHZ 
Hard DriveHard DriveCoolingOS
Samsung EVO 1TB Western Digital Black 2TB CUSTOM WATER LOOP Windows 8.1 
MonitorPowerCase
Qnix 27in Seasonic X1250 Corsair 250D 
  hide details  
Reply
900D
(32 items)
 
250D
(11 items)
 
 
CPUMotherboardGraphicsGraphics
Intel Core i7 3930K RAMPAGE IV Extreme EVGA TITAN X EVGA TITAN X 
GraphicsGraphicsRAMHard Drive
EVGA TITAN X EVGA TITAN X Corsair Dominator Platinum 16GB 2133 Samsung 830 
Hard DriveHard DriveHard DriveCooling
Western Digital Green Caviar Samsung 850 EVO  Western DIgital Black  EK Supremecy Nickle Plexi 
CoolingCoolingCoolingCooling
Alphacool 480 Monsta Radiator EK Coolstream XT480 EK Coolstream XT240 Corsair SP120 Fan 
CoolingCoolingCoolingCooling
Lamptron CW611 Liquid Cooling Controller EK Rampage 4 Extreme CSQ Block Swiftech MCP35x EK Nickle Plexi Ram blocks 
CoolingOSMonitorMonitor
Alphacool Nexxos ST30 Windows 7 Ultimate 64bit Samsung UD590 28in 4K Samsung UD590 28in 4K 
MonitorKeyboardPowerCase
Samsung UD590 28in 4K Razor Blackwidow Ultimate EVGA 1600G2 Corsair 900D  
MouseMouse PadAudioOther
Razor Naga 2014 Steelseries XL  Tritton AX720 Custom MDPC Sleeving Color X/Black 
CPUMotherboardGraphicsRAM
Intel 4790K Asus Maximus Vi Impact XFX R9 295x2 G Skill Trident X 2x8GB 2400 MHZ 
Hard DriveHard DriveCoolingOS
Samsung EVO 1TB Western Digital Black 2TB CUSTOM WATER LOOP Windows 8.1 
MonitorPowerCase
Qnix 27in Seasonic X1250 Corsair 250D 
  hide details  
Reply
post #22 of 104
Hey guys! I'm going to do the Variable resistor mod on both my cards.


I come up with this idea for my mod! smile.gif

These resistors fit snugly between the block and 6pin PCI-E connector.
With this resistor type i would be able to change my settings on demand with my cards in place.

I found several types of the same model with different K Ohm and wounder. What difference does it make with a different K Ohm on the resistor?
20K is 20000Ohm and 50K is 50000Ohm yes but does it make a difference?

Also i cant quite figure out your pics of the variable resistor mod, they doesn't show where the pins are and where the leads go behind the resistor.
Why isn't we using the same points as the solid resistor mod?

You said that you read out with your multimeter what type of resistor you would need. I did not understand where you read out that on the PCB and why.
Sry for the bombarding of questions i just cant see to understand the variable mod. tongue.gif

Image of the resistor placement. Yes those to baby Ti's are mine wink.gif



Resistors
https://www.elfa.se/elfa3~se_sv/elfa/init.do?cat=$model.getCatalogueRoot()&sq=famid76946&sel=1&solrRows=10

Resistor Specs
https://www1.elfa.se/data1/wwwroot/assets/datasheets/iySpectrol-63P_dat_e.pdf

Electrical
Effective Travel: 270° nom
Resistance Range: 10 Ohms to 2 Meg Ohm
Resistance Tolerance: ±10%
End Resistance: 2 Ohms max
Temperature Coefficient of Resistance:
100ppm/°C. 100 Ohms to 2 Meg Ohms
0 to +250ppm/°C. below 100 Ohms
Power Rating: 1/2W @ +70°C derated to 0W @ +125°C
Dielectric Withstanding Voltage:
1000V AC at sea level
250V AC at 80,000 feet (24,400 meters)
Insulation Resistance: 1000 Meg Ohms min
Contract Resistance Variation: 2% or 20 Ohms, whichever
is greater

Please help me understand this, what resistor should i go for and where should i solder it. biggrin.gif
Edited by TobbbeSWE - 4/22/14 at 2:39pm
    
CPUMotherboardGraphicsGraphics
4930k Asus Rampage IV Black EVGA 780Ti EVGA 780Ti 
RAMHard DriveHard DriveCooling
Corsair Dominator Platinum CL9 Samsung 840 PRO Samsung 840 PRO Currently working on a full Acrylic Loop with t... 
OSMonitorKeyboardPower
Win 8.1 OEM Benq xl2720t Corsair K90 Blue Corsair AX1200i 
CaseMouseMouse PadAudio
Corsair 540 AIR X7 XL-750-BH Razer Qpad-QH90 
  hide details  
Reply
    
CPUMotherboardGraphicsGraphics
4930k Asus Rampage IV Black EVGA 780Ti EVGA 780Ti 
RAMHard DriveHard DriveCooling
Corsair Dominator Platinum CL9 Samsung 840 PRO Samsung 840 PRO Currently working on a full Acrylic Loop with t... 
OSMonitorKeyboardPower
Win 8.1 OEM Benq xl2720t Corsair K90 Blue Corsair AX1200i 
CaseMouseMouse PadAudio
Corsair 540 AIR X7 XL-750-BH Razer Qpad-QH90 
  hide details  
Reply
post #23 of 104
from the resistor table posted in the first page it would appear that the lower the resistance, the higher the voltage so a 20k or 50k won't make many odds, it just won't have a noticeable effect until the last fraction of a turn on a single turn pot (which your quoted one is as it's range is only 270 degrees).

Go for a logarithmic variable resistor (rather than a linear) as this should give you finer control at the lower end of the resistance scale which is where you want to be operating as a few hundred Ohms seems to be the operating point and is quite a low resistance. If you're not careful with a linear resistor, a nudge could easily go from minimum to maximum voltage across the pins. If you can get a multi-turn trimmer pot this should give you even better control.

Personally I champion a resistor ladder over the variable resistor as you can test this on a bench to find the voltages it gives you, it's naturally non-linear if you opt for the same resistor values for each 'rung' and once you've got it configured correctly you know how much extra voltage you should be putting to your vcore without needing to hook up a multimeter simply by the dipswitch positions.

As for where to solder it, the annotated photos on the first page are pretty self explanatory

UPDATE:

This might be a good option, a Bourns 3005P-1-203
It's a 20k multi turn trimmer pot that goes from 100 Ohm to 20,000 Ohm. You could try asking them for a couple of samples, companies will usually send them out if you ask them or you could try RS if there's one in your country.

something like this I guess would be equivalent - http://uk.rs-online.com/web/p/trimmer-resistors/0162243/
Edited by pharcycle - 4/22/14 at 3:17pm
 
Mega Media PC
(21 items)
 
Media Server
(16 items)
 
CPUMotherboardGraphicsGraphics
Intel Core i7 3820 P9X79 PRO Reference EVGA GTX 780 TI Reference EVGA GTX 780 TI 
GraphicsRAMHard DriveOptical Drive
Reference EVGA GTX 780 TI Samsung  Corsair Force 3 Samsung BD-ROM drive 
CoolingCoolingCoolingCooling
XSPC Raystorm Full Copper block Phobia 150mm silver nickel reservior EK-FC780 GTX Ti - Nickel Original CSQ EK-FC780 GTX Ti - Nickel Original CSQ 
CoolingCoolingCoolingCooling
EK-FC780 GTX Ti - Nickel Original CSQ Alphacool 140.3 UT60 Nexxxos Radiator Alphacool 140.3 UT60 Nexxxos Radiator 12x Noctua NF-A14 PWM fans on rads 
CoolingCoolingOSMonitor
EK D5 Vario X-top EK D5 Vario X-top Win 7 Pro x64 Dell U2713H 
KeyboardPowerCaseMouse
Razer Lycosa ECGA SUperNova G2 1300W Caselabs TH10 Razer Lachesis 
Mouse PadAudioAudio
Razer eXactMat NI Komplete Audio NAD C320 Stereo Amplifier 
CPUMotherboardGraphicsRAM
Core i7 920 d0 Asus rampage ii gene Asus GTX 480 Corsair xms3 ddr3 2000 c9 
Hard DriveHard DriveOptical DriveCooling
OCZ Vertex 3 Samsung 2.5" notebook drive Samsung DVD-R drive Noctua 120 
CoolingCoolingCoolingOS
Noctua 120 Noctua 140 Noctua 140 Win7 x64 pro 
OSMonitorKeyboardPower
Mythbuntu 12.04.1 Panasonic 46" Plasma HDTV Apple Aluminium Keyboard  corsair hx650 
CaseMouseAudioAudio
Fractal R1 Apple Mighty Mouse Sony STR-DH800 Amp via HDMI in 5.0 speaker conf... Mordaunt Short 905 Centre, 902 front and 904 re... 
Other
Xbox wireless controller dongle 
CPUMotherboardGraphicsRAM
core 2 quad q6600 Asus P5K-E XFX 9800 GT Geil DDR2 4x1GB @ 1066 MHz  
Hard DriveHard DriveHard DriveHard Drive
Seagate Baraccuda Samsung HDD Seagate Baraccuda WD Caviar Black 
Hard DriveOptical DriveCoolingOS
Seagate Baraccuda Samsung DVD-RW Thermalright CPU cooler Mythbuntu 12.04.1 
PowerCaseOtherOther
Corsair 450W PSU Antec 300 WinTV Nova HD-S2 WinTV Nova-T PCI 
  hide details  
Reply
 
Mega Media PC
(21 items)
 
Media Server
(16 items)
 
CPUMotherboardGraphicsGraphics
Intel Core i7 3820 P9X79 PRO Reference EVGA GTX 780 TI Reference EVGA GTX 780 TI 
GraphicsRAMHard DriveOptical Drive
Reference EVGA GTX 780 TI Samsung  Corsair Force 3 Samsung BD-ROM drive 
CoolingCoolingCoolingCooling
XSPC Raystorm Full Copper block Phobia 150mm silver nickel reservior EK-FC780 GTX Ti - Nickel Original CSQ EK-FC780 GTX Ti - Nickel Original CSQ 
CoolingCoolingCoolingCooling
EK-FC780 GTX Ti - Nickel Original CSQ Alphacool 140.3 UT60 Nexxxos Radiator Alphacool 140.3 UT60 Nexxxos Radiator 12x Noctua NF-A14 PWM fans on rads 
CoolingCoolingOSMonitor
EK D5 Vario X-top EK D5 Vario X-top Win 7 Pro x64 Dell U2713H 
KeyboardPowerCaseMouse
Razer Lycosa ECGA SUperNova G2 1300W Caselabs TH10 Razer Lachesis 
Mouse PadAudioAudio
Razer eXactMat NI Komplete Audio NAD C320 Stereo Amplifier 
CPUMotherboardGraphicsRAM
Core i7 920 d0 Asus rampage ii gene Asus GTX 480 Corsair xms3 ddr3 2000 c9 
Hard DriveHard DriveOptical DriveCooling
OCZ Vertex 3 Samsung 2.5" notebook drive Samsung DVD-R drive Noctua 120 
CoolingCoolingCoolingOS
Noctua 120 Noctua 140 Noctua 140 Win7 x64 pro 
OSMonitorKeyboardPower
Mythbuntu 12.04.1 Panasonic 46" Plasma HDTV Apple Aluminium Keyboard  corsair hx650 
CaseMouseAudioAudio
Fractal R1 Apple Mighty Mouse Sony STR-DH800 Amp via HDMI in 5.0 speaker conf... Mordaunt Short 905 Centre, 902 front and 904 re... 
Other
Xbox wireless controller dongle 
CPUMotherboardGraphicsRAM
core 2 quad q6600 Asus P5K-E XFX 9800 GT Geil DDR2 4x1GB @ 1066 MHz  
Hard DriveHard DriveHard DriveHard Drive
Seagate Baraccuda Samsung HDD Seagate Baraccuda WD Caviar Black 
Hard DriveOptical DriveCoolingOS
Seagate Baraccuda Samsung DVD-RW Thermalright CPU cooler Mythbuntu 12.04.1 
PowerCaseOtherOther
Corsair 450W PSU Antec 300 WinTV Nova HD-S2 WinTV Nova-T PCI 
  hide details  
Reply
post #24 of 104
mad.gif
Quote:
Originally Posted by pharcycle View Post

from the resistor table posted in the first page it would appear that the lower the resistance, the higher the voltage so a 20k or 50k won't make many odds, it just won't have a noticeable effect until the last fraction of a turn on a single turn pot (which your quoted one is as it's range is only 270 degrees).

Go for a logarithmic variable resistor (rather than a linear) as this should give you finer control at the lower end of the resistance scale which is where you want to be operating as a few hundred Ohms seems to be the operating point and is quite a low resistance. If you're not careful with a linear resistor, a nudge could easily go from minimum to maximum voltage across the pins. If you can get a multi-turn trimmer pot this should give you even better control.

Personally I champion a resistor ladder over the variable resistor as you can test this on a bench to find the voltages it gives you, it's naturally non-linear if you opt for the same resistor values for each 'rung' and once you've got it configured correctly you know how much extra voltage you should be putting to your vcore without needing to hook up a multimeter simply by the dipswitch positions.

As for where to solder it, the annotated photos on the first page are pretty self explanatory

Oh i just noticed with my tired eyes that there is only one lead/wire not two.. So - First pin top GND on PCI-E then thought resistor and down to the PCB shown on the pic.

OK but should t only 1K resistor be enough then to gain almost stock volts then? rolleyes.gif 50K or even 20K would be Mega overkill in resist ans.

1K insted of 20-50K on a 270 Degrees resistor would be WAAAY more precise.

Hmm spikes in voltage ey? That doesn't sound so good.


Wanna help me search for a resistor on this site?

https://www.elfa.se/elfa3~se_sv/elfa/init.do?toc=19414&name=Motst%C3%A5nd+%2F+Potentiometrar smile.gif

Also watching my volts when overclocking with multimeters is a must anyway so that wouldn't be a problem. Dip-switch would work great but i want a tight clean build.

The design is the same, why would the loga.. have a better defense from spikes?


Also the specs of the resistor says that only 2% of variances should be with this resistor or am i understanding it wrong?

Contract Resistance Variation: 2% or 20 Ohms, whichever is greater
Edited by TobbbeSWE - 4/22/14 at 3:52pm
    
CPUMotherboardGraphicsGraphics
4930k Asus Rampage IV Black EVGA 780Ti EVGA 780Ti 
RAMHard DriveHard DriveCooling
Corsair Dominator Platinum CL9 Samsung 840 PRO Samsung 840 PRO Currently working on a full Acrylic Loop with t... 
OSMonitorKeyboardPower
Win 8.1 OEM Benq xl2720t Corsair K90 Blue Corsair AX1200i 
CaseMouseMouse PadAudio
Corsair 540 AIR X7 XL-750-BH Razer Qpad-QH90 
  hide details  
Reply
    
CPUMotherboardGraphicsGraphics
4930k Asus Rampage IV Black EVGA 780Ti EVGA 780Ti 
RAMHard DriveHard DriveCooling
Corsair Dominator Platinum CL9 Samsung 840 PRO Samsung 840 PRO Currently working on a full Acrylic Loop with t... 
OSMonitorKeyboardPower
Win 8.1 OEM Benq xl2720t Corsair K90 Blue Corsair AX1200i 
CaseMouseMouse PadAudio
Corsair 540 AIR X7 XL-750-BH Razer Qpad-QH90 
  hide details  
Reply
post #25 of 104
Quote:
Originally Posted by TobbbeSWE View Post

mad.gif
Oh i just noticed with my tired eyes that there is only one lead/wire not two.. So - First pin top GND on PCI-E then thought resistor and down to the PCB shown on the pic.

Yeah, there are various ways to wire up a variable resistor in this instance it's being used as a rheostat so you're only wiring up one end and the centre tap. Depending on which way round it's wired up maximum resistance will be at either max clockwise or max anticlockwise so make sure to double check this with a multimeter before turning on.
Quote:
Originally Posted by TobbbeSWE View Post

OK but should t only 1K resistor be enough then to gain almost stock volts then? rolleyes.gif 50K or even 20K would be Mega overkill in resist ans.

Can't say about max resistance, I've not done the mod yet. You could always wire a switch in series to disable it.
Quote:
Originally Posted by TobbbeSWE View Post

1K insted of 20-50K on a 270 Degrees resistor would be WAAAY more precise.

yeah, multiturn is by far the better option though as it'll be a heck of a lot more precise

Quote:
Originally Posted by TobbbeSWE View Post

Hmm spikes in voltage ey? That doesn't sound so good.

[snip]

The design is the same, why would the loga.. have a better defense from spikes?

It doesn't, but it means at the lower end of the scale of a 50k linear variable resistor would be a change of 185 Ohms which could result in a dangerous overvolt. Or not, just something to consider when choosing the resistor. A smoothing capacitor in parallel across the terminals should eliminate spikes but you might want someone else to chime in if this is a good idea or not in this application.

Quote:
Originally Posted by TobbbeSWE View Post

Wanna help me search for a resistor on this site?
https://www.elfa.se/elfa3~se_sv/elfa/init.do?toc=19414&name=Motst%C3%A5nd+%2F+Potentiometrar smile.gif

https://www.elfa.se/elfa3~se_sv/elfa/init.do?item=64-735-73&toc=20187 this maybe but it's quite large (3/8") 2kR max, 20 turn pot. You could probably go for the 20kR one with 20 turns to play with or fewer turns to get the body smaller.
 
Mega Media PC
(21 items)
 
Media Server
(16 items)
 
CPUMotherboardGraphicsGraphics
Intel Core i7 3820 P9X79 PRO Reference EVGA GTX 780 TI Reference EVGA GTX 780 TI 
GraphicsRAMHard DriveOptical Drive
Reference EVGA GTX 780 TI Samsung  Corsair Force 3 Samsung BD-ROM drive 
CoolingCoolingCoolingCooling
XSPC Raystorm Full Copper block Phobia 150mm silver nickel reservior EK-FC780 GTX Ti - Nickel Original CSQ EK-FC780 GTX Ti - Nickel Original CSQ 
CoolingCoolingCoolingCooling
EK-FC780 GTX Ti - Nickel Original CSQ Alphacool 140.3 UT60 Nexxxos Radiator Alphacool 140.3 UT60 Nexxxos Radiator 12x Noctua NF-A14 PWM fans on rads 
CoolingCoolingOSMonitor
EK D5 Vario X-top EK D5 Vario X-top Win 7 Pro x64 Dell U2713H 
KeyboardPowerCaseMouse
Razer Lycosa ECGA SUperNova G2 1300W Caselabs TH10 Razer Lachesis 
Mouse PadAudioAudio
Razer eXactMat NI Komplete Audio NAD C320 Stereo Amplifier 
CPUMotherboardGraphicsRAM
Core i7 920 d0 Asus rampage ii gene Asus GTX 480 Corsair xms3 ddr3 2000 c9 
Hard DriveHard DriveOptical DriveCooling
OCZ Vertex 3 Samsung 2.5" notebook drive Samsung DVD-R drive Noctua 120 
CoolingCoolingCoolingOS
Noctua 120 Noctua 140 Noctua 140 Win7 x64 pro 
OSMonitorKeyboardPower
Mythbuntu 12.04.1 Panasonic 46" Plasma HDTV Apple Aluminium Keyboard  corsair hx650 
CaseMouseAudioAudio
Fractal R1 Apple Mighty Mouse Sony STR-DH800 Amp via HDMI in 5.0 speaker conf... Mordaunt Short 905 Centre, 902 front and 904 re... 
Other
Xbox wireless controller dongle 
CPUMotherboardGraphicsRAM
core 2 quad q6600 Asus P5K-E XFX 9800 GT Geil DDR2 4x1GB @ 1066 MHz  
Hard DriveHard DriveHard DriveHard Drive
Seagate Baraccuda Samsung HDD Seagate Baraccuda WD Caviar Black 
Hard DriveOptical DriveCoolingOS
Seagate Baraccuda Samsung DVD-RW Thermalright CPU cooler Mythbuntu 12.04.1 
PowerCaseOtherOther
Corsair 450W PSU Antec 300 WinTV Nova HD-S2 WinTV Nova-T PCI 
  hide details  
Reply
 
Mega Media PC
(21 items)
 
Media Server
(16 items)
 
CPUMotherboardGraphicsGraphics
Intel Core i7 3820 P9X79 PRO Reference EVGA GTX 780 TI Reference EVGA GTX 780 TI 
GraphicsRAMHard DriveOptical Drive
Reference EVGA GTX 780 TI Samsung  Corsair Force 3 Samsung BD-ROM drive 
CoolingCoolingCoolingCooling
XSPC Raystorm Full Copper block Phobia 150mm silver nickel reservior EK-FC780 GTX Ti - Nickel Original CSQ EK-FC780 GTX Ti - Nickel Original CSQ 
CoolingCoolingCoolingCooling
EK-FC780 GTX Ti - Nickel Original CSQ Alphacool 140.3 UT60 Nexxxos Radiator Alphacool 140.3 UT60 Nexxxos Radiator 12x Noctua NF-A14 PWM fans on rads 
CoolingCoolingOSMonitor
EK D5 Vario X-top EK D5 Vario X-top Win 7 Pro x64 Dell U2713H 
KeyboardPowerCaseMouse
Razer Lycosa ECGA SUperNova G2 1300W Caselabs TH10 Razer Lachesis 
Mouse PadAudioAudio
Razer eXactMat NI Komplete Audio NAD C320 Stereo Amplifier 
CPUMotherboardGraphicsRAM
Core i7 920 d0 Asus rampage ii gene Asus GTX 480 Corsair xms3 ddr3 2000 c9 
Hard DriveHard DriveOptical DriveCooling
OCZ Vertex 3 Samsung 2.5" notebook drive Samsung DVD-R drive Noctua 120 
CoolingCoolingCoolingOS
Noctua 120 Noctua 140 Noctua 140 Win7 x64 pro 
OSMonitorKeyboardPower
Mythbuntu 12.04.1 Panasonic 46" Plasma HDTV Apple Aluminium Keyboard  corsair hx650 
CaseMouseAudioAudio
Fractal R1 Apple Mighty Mouse Sony STR-DH800 Amp via HDMI in 5.0 speaker conf... Mordaunt Short 905 Centre, 902 front and 904 re... 
Other
Xbox wireless controller dongle 
CPUMotherboardGraphicsRAM
core 2 quad q6600 Asus P5K-E XFX 9800 GT Geil DDR2 4x1GB @ 1066 MHz  
Hard DriveHard DriveHard DriveHard Drive
Seagate Baraccuda Samsung HDD Seagate Baraccuda WD Caviar Black 
Hard DriveOptical DriveCoolingOS
Seagate Baraccuda Samsung DVD-RW Thermalright CPU cooler Mythbuntu 12.04.1 
PowerCaseOtherOther
Corsair 450W PSU Antec 300 WinTV Nova HD-S2 WinTV Nova-T PCI 
  hide details  
Reply
post #26 of 104
Thread Starter 
Quote:
Originally Posted by TobbbeSWE View Post

mad.gif
Oh i just noticed with my tired eyes that there is only one lead/wire not two.. So - First pin top GND on PCI-E then thought resistor and down to the PCB shown on the pic.

OK but should t only 1K resistor be enough then to gain almost stock volts then? rolleyes.gif 50K or even 20K would be Mega overkill in resist ans.

1K insted of 20-50K on a 270 Degrees resistor would be WAAAY more precise.

Hmm spikes in voltage ey? That doesn't sound so good.


Wanna help me search for a resistor on this site?

https://www.elfa.se/elfa3~se_sv/elfa/init.do?toc=19414&name=Motst%C3%A5nd+%2F+Potentiometrar smile.gif

Also watching my volts when overclocking with multimeters is a must anyway so that wouldn't be a problem. Dip-switch would work great but i want a tight clean build.

The design is the same, why would the loga.. have a better defense from spikes?


Also the specs of the resistor says that only 2% of variances should be with this resistor or am i understanding it wrong?

Contract Resistance Variation: 2% or 20 Ohms, whichever is greater
The a 50k ohm resistor could work not sire of the voltage reading you would get. The 20k ohm resistor would allow you to have plenty of bench voltage even for ln2 and still allow you to come back down to stock I think ftw420 had tried a 50k ohm for his titan mod and switched it out because he couldnt get it back down to stock voltage.
900D
(32 items)
 
250D
(11 items)
 
 
CPUMotherboardGraphicsGraphics
Intel Core i7 3930K RAMPAGE IV Extreme EVGA TITAN X EVGA TITAN X 
GraphicsGraphicsRAMHard Drive
EVGA TITAN X EVGA TITAN X Corsair Dominator Platinum 16GB 2133 Samsung 830 
Hard DriveHard DriveHard DriveCooling
Western Digital Green Caviar Samsung 850 EVO  Western DIgital Black  EK Supremecy Nickle Plexi 
CoolingCoolingCoolingCooling
Alphacool 480 Monsta Radiator EK Coolstream XT480 EK Coolstream XT240 Corsair SP120 Fan 
CoolingCoolingCoolingCooling
Lamptron CW611 Liquid Cooling Controller EK Rampage 4 Extreme CSQ Block Swiftech MCP35x EK Nickle Plexi Ram blocks 
CoolingOSMonitorMonitor
Alphacool Nexxos ST30 Windows 7 Ultimate 64bit Samsung UD590 28in 4K Samsung UD590 28in 4K 
MonitorKeyboardPowerCase
Samsung UD590 28in 4K Razor Blackwidow Ultimate EVGA 1600G2 Corsair 900D  
MouseMouse PadAudioOther
Razor Naga 2014 Steelseries XL  Tritton AX720 Custom MDPC Sleeving Color X/Black 
CPUMotherboardGraphicsRAM
Intel 4790K Asus Maximus Vi Impact XFX R9 295x2 G Skill Trident X 2x8GB 2400 MHZ 
Hard DriveHard DriveCoolingOS
Samsung EVO 1TB Western Digital Black 2TB CUSTOM WATER LOOP Windows 8.1 
MonitorPowerCase
Qnix 27in Seasonic X1250 Corsair 250D 
  hide details  
Reply
900D
(32 items)
 
250D
(11 items)
 
 
CPUMotherboardGraphicsGraphics
Intel Core i7 3930K RAMPAGE IV Extreme EVGA TITAN X EVGA TITAN X 
GraphicsGraphicsRAMHard Drive
EVGA TITAN X EVGA TITAN X Corsair Dominator Platinum 16GB 2133 Samsung 830 
Hard DriveHard DriveHard DriveCooling
Western Digital Green Caviar Samsung 850 EVO  Western DIgital Black  EK Supremecy Nickle Plexi 
CoolingCoolingCoolingCooling
Alphacool 480 Monsta Radiator EK Coolstream XT480 EK Coolstream XT240 Corsair SP120 Fan 
CoolingCoolingCoolingCooling
Lamptron CW611 Liquid Cooling Controller EK Rampage 4 Extreme CSQ Block Swiftech MCP35x EK Nickle Plexi Ram blocks 
CoolingOSMonitorMonitor
Alphacool Nexxos ST30 Windows 7 Ultimate 64bit Samsung UD590 28in 4K Samsung UD590 28in 4K 
MonitorKeyboardPowerCase
Samsung UD590 28in 4K Razor Blackwidow Ultimate EVGA 1600G2 Corsair 900D  
MouseMouse PadAudioOther
Razor Naga 2014 Steelseries XL  Tritton AX720 Custom MDPC Sleeving Color X/Black 
CPUMotherboardGraphicsRAM
Intel 4790K Asus Maximus Vi Impact XFX R9 295x2 G Skill Trident X 2x8GB 2400 MHZ 
Hard DriveHard DriveCoolingOS
Samsung EVO 1TB Western Digital Black 2TB CUSTOM WATER LOOP Windows 8.1 
MonitorPowerCase
Qnix 27in Seasonic X1250 Corsair 250D 
  hide details  
Reply
post #27 of 104
EDIT

Wrong thread sorry
post #28 of 104
So, for method one, the best chance for 1.3v is a single 150 Ohm Resistor? Can we go lower, i.e. 100 Ohms?
Snowdevil
(16 items)
 
ASUS G750JM
(9 items)
 
 
CPUMotherboardGraphicsGraphics
[i7 4790K @ 4.4 GHz (1.186v)] [Asus Sabertooth Z97 Mark S] [nVidia Geforce GTX 1080] [nVidia Geforce GTX 1080] 
RAMHard DriveCoolingOS
[G.Skill 32GB DDR3 2133 MHz] [Crucial MX100 256GB] [Phanteks PH-TC12DX] [Win 10.1 Pro] 
MonitorMonitorKeyboardPower
[LG 29UM65 (2560x1080)] [QNIX Evo II LED (2560x1440)] [WASD v2 Tenkeyless] [NZXT Hale90 v2 ] 
CaseMouseMouse PadAudio
[ThermalTake GT10 Snow Edition] [Razer Mamba - Chroma] [Razer Kabuto] [Razer Man O' War] 
CPUMotherboardGraphicsRAM
i7 4770HQ Intel HM87 Express Chipset Geforce GTX 860M 8GB DDR3L 1600 MHz 
Hard DriveOptical DriveCoolingOS
Samsung SSD EVO DVD-RW Stock Windows 8.1 
Monitor
1920x1080 TN 
  hide details  
Reply
Snowdevil
(16 items)
 
ASUS G750JM
(9 items)
 
 
CPUMotherboardGraphicsGraphics
[i7 4790K @ 4.4 GHz (1.186v)] [Asus Sabertooth Z97 Mark S] [nVidia Geforce GTX 1080] [nVidia Geforce GTX 1080] 
RAMHard DriveCoolingOS
[G.Skill 32GB DDR3 2133 MHz] [Crucial MX100 256GB] [Phanteks PH-TC12DX] [Win 10.1 Pro] 
MonitorMonitorKeyboardPower
[LG 29UM65 (2560x1080)] [QNIX Evo II LED (2560x1440)] [WASD v2 Tenkeyless] [NZXT Hale90 v2 ] 
CaseMouseMouse PadAudio
[ThermalTake GT10 Snow Edition] [Razer Mamba - Chroma] [Razer Kabuto] [Razer Man O' War] 
CPUMotherboardGraphicsRAM
i7 4770HQ Intel HM87 Express Chipset Geforce GTX 860M 8GB DDR3L 1600 MHz 
Hard DriveOptical DriveCoolingOS
Samsung SSD EVO DVD-RW Stock Windows 8.1 
Monitor
1920x1080 TN 
  hide details  
Reply
post #29 of 104
Thread Starter 
Quote:
Originally Posted by RagingCain View Post

So, for method one, the best chance for 1.3v is a single 150 Ohm Resistor? Can we go lower, i.e. 100 Ohms?
Sorry I was at work. Yes a 100 ohm could get you closer to 1.3 I sold my tis so I have no way of testing the smaller ohm but if you solder the tester leads you could try the 100 ohm and let me know what voltage your getting then once you find your desired voltage you could remove the voltage test leads and leave it where no one knows.
900D
(32 items)
 
250D
(11 items)
 
 
CPUMotherboardGraphicsGraphics
Intel Core i7 3930K RAMPAGE IV Extreme EVGA TITAN X EVGA TITAN X 
GraphicsGraphicsRAMHard Drive
EVGA TITAN X EVGA TITAN X Corsair Dominator Platinum 16GB 2133 Samsung 830 
Hard DriveHard DriveHard DriveCooling
Western Digital Green Caviar Samsung 850 EVO  Western DIgital Black  EK Supremecy Nickle Plexi 
CoolingCoolingCoolingCooling
Alphacool 480 Monsta Radiator EK Coolstream XT480 EK Coolstream XT240 Corsair SP120 Fan 
CoolingCoolingCoolingCooling
Lamptron CW611 Liquid Cooling Controller EK Rampage 4 Extreme CSQ Block Swiftech MCP35x EK Nickle Plexi Ram blocks 
CoolingOSMonitorMonitor
Alphacool Nexxos ST30 Windows 7 Ultimate 64bit Samsung UD590 28in 4K Samsung UD590 28in 4K 
MonitorKeyboardPowerCase
Samsung UD590 28in 4K Razor Blackwidow Ultimate EVGA 1600G2 Corsair 900D  
MouseMouse PadAudioOther
Razor Naga 2014 Steelseries XL  Tritton AX720 Custom MDPC Sleeving Color X/Black 
CPUMotherboardGraphicsRAM
Intel 4790K Asus Maximus Vi Impact XFX R9 295x2 G Skill Trident X 2x8GB 2400 MHZ 
Hard DriveHard DriveCoolingOS
Samsung EVO 1TB Western Digital Black 2TB CUSTOM WATER LOOP Windows 8.1 
MonitorPowerCase
Qnix 27in Seasonic X1250 Corsair 250D 
  hide details  
Reply
900D
(32 items)
 
250D
(11 items)
 
 
CPUMotherboardGraphicsGraphics
Intel Core i7 3930K RAMPAGE IV Extreme EVGA TITAN X EVGA TITAN X 
GraphicsGraphicsRAMHard Drive
EVGA TITAN X EVGA TITAN X Corsair Dominator Platinum 16GB 2133 Samsung 830 
Hard DriveHard DriveHard DriveCooling
Western Digital Green Caviar Samsung 850 EVO  Western DIgital Black  EK Supremecy Nickle Plexi 
CoolingCoolingCoolingCooling
Alphacool 480 Monsta Radiator EK Coolstream XT480 EK Coolstream XT240 Corsair SP120 Fan 
CoolingCoolingCoolingCooling
Lamptron CW611 Liquid Cooling Controller EK Rampage 4 Extreme CSQ Block Swiftech MCP35x EK Nickle Plexi Ram blocks 
CoolingOSMonitorMonitor
Alphacool Nexxos ST30 Windows 7 Ultimate 64bit Samsung UD590 28in 4K Samsung UD590 28in 4K 
MonitorKeyboardPowerCase
Samsung UD590 28in 4K Razor Blackwidow Ultimate EVGA 1600G2 Corsair 900D  
MouseMouse PadAudioOther
Razor Naga 2014 Steelseries XL  Tritton AX720 Custom MDPC Sleeving Color X/Black 
CPUMotherboardGraphicsRAM
Intel 4790K Asus Maximus Vi Impact XFX R9 295x2 G Skill Trident X 2x8GB 2400 MHZ 
Hard DriveHard DriveCoolingOS
Samsung EVO 1TB Western Digital Black 2TB CUSTOM WATER LOOP Windows 8.1 
MonitorPowerCase
Qnix 27in Seasonic X1250 Corsair 250D 
  hide details  
Reply
post #30 of 104
Quote:
Originally Posted by doctakedooty View Post

Quote:
Originally Posted by RagingCain View Post

So, for method one, the best chance for 1.3v is a single 150 Ohm Resistor? Can we go lower, i.e. 100 Ohms?

Sorry I was at work. Yes a 100 ohm could get you closer to 1.3 I sold my tis so I have no way of testing the smaller ohm but if you solder the tester leads you could try the 100 ohm and let me know what voltage your getting then once you find your desired voltage you could remove the voltage test leads and leave it where no one knows.

I was thinking tiny leads, leave it in place, permanently with water blocks and back plates. I will have to be extra careful though about contact though. I haven't soldered in about 15 years and that wasn't delicate either
Snowdevil
(16 items)
 
ASUS G750JM
(9 items)
 
 
CPUMotherboardGraphicsGraphics
[i7 4790K @ 4.4 GHz (1.186v)] [Asus Sabertooth Z97 Mark S] [nVidia Geforce GTX 1080] [nVidia Geforce GTX 1080] 
RAMHard DriveCoolingOS
[G.Skill 32GB DDR3 2133 MHz] [Crucial MX100 256GB] [Phanteks PH-TC12DX] [Win 10.1 Pro] 
MonitorMonitorKeyboardPower
[LG 29UM65 (2560x1080)] [QNIX Evo II LED (2560x1440)] [WASD v2 Tenkeyless] [NZXT Hale90 v2 ] 
CaseMouseMouse PadAudio
[ThermalTake GT10 Snow Edition] [Razer Mamba - Chroma] [Razer Kabuto] [Razer Man O' War] 
CPUMotherboardGraphicsRAM
i7 4770HQ Intel HM87 Express Chipset Geforce GTX 860M 8GB DDR3L 1600 MHz 
Hard DriveOptical DriveCoolingOS
Samsung SSD EVO DVD-RW Stock Windows 8.1 
Monitor
1920x1080 TN 
  hide details  
Reply
Snowdevil
(16 items)
 
ASUS G750JM
(9 items)
 
 
CPUMotherboardGraphicsGraphics
[i7 4790K @ 4.4 GHz (1.186v)] [Asus Sabertooth Z97 Mark S] [nVidia Geforce GTX 1080] [nVidia Geforce GTX 1080] 
RAMHard DriveCoolingOS
[G.Skill 32GB DDR3 2133 MHz] [Crucial MX100 256GB] [Phanteks PH-TC12DX] [Win 10.1 Pro] 
MonitorMonitorKeyboardPower
[LG 29UM65 (2560x1080)] [QNIX Evo II LED (2560x1440)] [WASD v2 Tenkeyless] [NZXT Hale90 v2 ] 
CaseMouseMouse PadAudio
[ThermalTake GT10 Snow Edition] [Razer Mamba - Chroma] [Razer Kabuto] [Razer Man O' War] 
CPUMotherboardGraphicsRAM
i7 4770HQ Intel HM87 Express Chipset Geforce GTX 860M 8GB DDR3L 1600 MHz 
Hard DriveOptical DriveCoolingOS
Samsung SSD EVO DVD-RW Stock Windows 8.1 
Monitor
1920x1080 TN 
  hide details  
Reply
New Posts  All Forums:Forum Nav:
  Return Home
  Back to Forum: Graphics Cards Volt Mods
Overclock.net › Forums › Volt Mods › General Volt Mods › Graphics Cards Volt Mods › Nvidia GTX 780Ti Hard Volt Mod