Overclock.net › Forums › Graphics Cards › NVIDIA › [Official] NVIDIA GTX 780 Ti Owner's Club
New Posts  All Forums:Forum Nav:

[Official] NVIDIA GTX 780 Ti Owner's Club - Page 950

post #9491 of 16481
To doctakedooty!

"As far as knowing how to do it I never volt modded a card before. I got my soldering experience from modding xboxs not for illegal purposes but so I could play emulators and started doing it as a side business. The guide was compiled die to the great help of Ftw 420 and guides on hwbot. There is nothing I am aware of for the ti but it uses a similar pcb as the titan. The resistors table seen was from my own trial and error. I did have 4 780Ti but now I have 3 not from to much voltage but during the variable resistor mod a very small point was pulled before I secured the wire due to my little girl pulling on a hot soldering iron and I accidently pulled the wire with the point off. So on that note I am in no way a professional at this I just like to explore and push things and am willing to take the risk. So the risk is there of being out hundreds of dollars but the reward is there if you succeed. As far as the clocks increase I am not completely sure since I shut down due to to much power draw but that is because my seasonic is starting to go bad and I am trying to make it last till the 1500 w corsair psu comes out where I can push things."

doctakedooty (From his thread: http://www.overclock.net/t/1478066/nvidia-gtx-780ti-hard-volt-mod/0_100)

THIS IS OCN SPIRIT! WE ARE OVERCLOCKERS AT HEART! WE ARE OCN!

My tribute to you Doc! thumb.gif

Cheers

Ed

(Team skyn3t)
S.S.
(14 items)
 
  
CPUMotherboardGraphicsRAM
I5-3570K@5.0Ghz@1,4v ASUS MAXIMUS V GENE MSI 1080Ti Gaming X 16GB GSKILL RIPJAW X DDR3 1866MHZ (9-10-9-24) (... 
Hard DriveHard DriveCoolingOS
OCZ Agility 3 120GB + Toshiba A100 250GB Western Digital 2TB  Homemade WC (everything on water) ;) W10x64 
MonitorMonitorMonitorPower
ASUS VG278HE ASUS VG278HE ASUS VG278HE Silverstone Strider 1200W 
CaseAudio
Corsair 500R THX 500W 5.1 
  hide details  
Reply
S.S.
(14 items)
 
  
CPUMotherboardGraphicsRAM
I5-3570K@5.0Ghz@1,4v ASUS MAXIMUS V GENE MSI 1080Ti Gaming X 16GB GSKILL RIPJAW X DDR3 1866MHZ (9-10-9-24) (... 
Hard DriveHard DriveCoolingOS
OCZ Agility 3 120GB + Toshiba A100 250GB Western Digital 2TB  Homemade WC (everything on water) ;) W10x64 
MonitorMonitorMonitorPower
ASUS VG278HE ASUS VG278HE ASUS VG278HE Silverstone Strider 1200W 
CaseAudio
Corsair 500R THX 500W 5.1 
  hide details  
Reply
post #9492 of 16481
OccamRazor,

What would you recommend as a good VRM cooling solution? Individual heatsinks? Front heat spreader plate (like in the classified editions)? Simple fan blowing on the exposed VRM?
my build
(6 items)
 
  
CPUMotherboardGraphicsRAM
i7-4770K GA-Z87X-OC EVGA 780 TI SC 16 GB 
OSPower
Windows 8.1 1200W PSU 
  hide details  
Reply
my build
(6 items)
 
  
CPUMotherboardGraphicsRAM
i7-4770K GA-Z87X-OC EVGA 780 TI SC 16 GB 
OSPower
Windows 8.1 1200W PSU 
  hide details  
Reply
post #9493 of 16481
Quote:
Originally Posted by Kedzie View Post

OccamRazor,

What would you recommend as a good VRM cooling solution? Individual heatsinks? Front heat spreader plate (like in the classified editions)? Simple fan blowing on the exposed VRM?

Best? Water block! By far the most heat generating part of the VRM modules are the mosfets (metal-oxide semiconductor field-effect transistor):

MOSFETs come in four different types. They may be enhancement or depletion mode, and they may be n-channel or p-channel. There are also logic-level MOSFETs and normal MOSFETs. The only difference between these is the voltage level required on the gate.




This one (your card has 8 of them) in your 780Ti is a FDMF6823A that integrates a driver IC, two power MOSFETs, and a bootstrap Schottky diode into a thermally enhanced 6x6mm package!

The performance of a heatsink is dependant on many variables such as location in the equipment, effective airflow, fin spacing, fin height, fin thickness, base thickness, shape, and overall length. Consequently the impact on the performance of a heatsink mounted other than vertically is not a fixed number, and may depend on the inter-relationship between two or more of these variables!
Now, its my personal opinion that these VRM power sections should be always cooled with water! (Water as in water cooled block) tongue.gif
Semiconductors common rule of thumb (although not exactly accurate) is that every 10ºC reduction in the junction temperature of a semiconductor will double the life expectancy of that semiconductor! Like i always say the cooler the better! smile.gif
The front heat spreader in the Classys are a good idea as it spreads the heat throughout the plate that is in turn cooled by the fans!
If you go with individual heatsinks (i do not recommend it, but some will as they use it and never had a problem...rolleyes.gif) be sure to use big ones (enough to make room for all) on each mosfet, with thick base and tall fins AND a very good airflow through them, with high performance fans! wink.gif
But think of.... Water! thumb.gif


Cheers

Ed

(Team skyn3t)
S.S.
(14 items)
 
  
CPUMotherboardGraphicsRAM
I5-3570K@5.0Ghz@1,4v ASUS MAXIMUS V GENE MSI 1080Ti Gaming X 16GB GSKILL RIPJAW X DDR3 1866MHZ (9-10-9-24) (... 
Hard DriveHard DriveCoolingOS
OCZ Agility 3 120GB + Toshiba A100 250GB Western Digital 2TB  Homemade WC (everything on water) ;) W10x64 
MonitorMonitorMonitorPower
ASUS VG278HE ASUS VG278HE ASUS VG278HE Silverstone Strider 1200W 
CaseAudio
Corsair 500R THX 500W 5.1 
  hide details  
Reply
S.S.
(14 items)
 
  
CPUMotherboardGraphicsRAM
I5-3570K@5.0Ghz@1,4v ASUS MAXIMUS V GENE MSI 1080Ti Gaming X 16GB GSKILL RIPJAW X DDR3 1866MHZ (9-10-9-24) (... 
Hard DriveHard DriveCoolingOS
OCZ Agility 3 120GB + Toshiba A100 250GB Western Digital 2TB  Homemade WC (everything on water) ;) W10x64 
MonitorMonitorMonitorPower
ASUS VG278HE ASUS VG278HE ASUS VG278HE Silverstone Strider 1200W 
CaseAudio
Corsair 500R THX 500W 5.1 
  hide details  
Reply
post #9494 of 16481
Quote:
Originally Posted by xxpantherrrxx View Post

I have a Alphacool UT60 360mm and a XSPC EX 240mm radiators.

IMO there's something wrong.. either with the block and/or the loop.

I've got my 4770K @ 1.4v and when doing the mandatory benches on my TI Classy I pumped it to 1.4v + PWM (who knows what the real volt was) and it peaked @ 48 degrees.

I know our cards are different TI but I just don't think it should be that high @ 1.2v.
Just a 'puter
(18 items)
 
  
CPUMotherboardGraphicsRAM
Intel Core i7 6700K ASUS Maximus VIII Hero iGPU thanks to Nvidia 970 3.5GB Corsair Vengeance LPX CMK8GX4M2B3200C16 
Hard DriveHard DriveCoolingCooling
Samsung 950 PRO 512GB Crucial M4 256GB RX360 V3 Koolance CPU-380I 
CoolingCoolingOSMonitor
Koolance RP-452X2 Reservoir Koolance PMP-450 12V Variable Speed Pump Windows 10 Pro x64 benq XL2411Z 
KeyboardPowerCaseMouse
logitech G510 Seasonic X-760 Corsair 800D Mionix Castor 
AudioAudio
Creative Sound Blaster X-Fi Titanium HD DT 990 Premium 250Ohm 
  hide details  
Reply
Just a 'puter
(18 items)
 
  
CPUMotherboardGraphicsRAM
Intel Core i7 6700K ASUS Maximus VIII Hero iGPU thanks to Nvidia 970 3.5GB Corsair Vengeance LPX CMK8GX4M2B3200C16 
Hard DriveHard DriveCoolingCooling
Samsung 950 PRO 512GB Crucial M4 256GB RX360 V3 Koolance CPU-380I 
CoolingCoolingOSMonitor
Koolance RP-452X2 Reservoir Koolance PMP-450 12V Variable Speed Pump Windows 10 Pro x64 benq XL2411Z 
KeyboardPowerCaseMouse
logitech G510 Seasonic X-760 Corsair 800D Mionix Castor 
AudioAudio
Creative Sound Blaster X-Fi Titanium HD DT 990 Premium 250Ohm 
  hide details  
Reply
post #9495 of 16481
Quote:
Originally Posted by doctakedooty View Post

Warning: Spoiler! (Click to show)
So I have had a lot of people ask for the hard mod lately and been asked to write a guide and honestly I been so busy lately with my pc that I just have not had the time with work and spring time with family etc. So I finally started working on the guide and put a little bit up and will finish it throughout the week and hopefully answer any questions you guys have on the forum I started for it. This is my first guide so any ideas as I write it to make it better please feel free to. @OccamRazor@skyn3t Feel free to add this to the 780Ti forum if you wish. http://www.overclock.net/t/1478066/nvidia-gtx-780ti-hard-volt-mod is the link to the thread I started for the mod.
I do need some help though if someone can take a good picture of the back of the EVGA GTX 780Ti reference so I can photoshop where to do one of the mod points are if would be highly appreciated. Please PM me the pic as my cards have back plates and are under water so it would be a pain to break mine down for a pic.

I'll send it in a couple of minutes if you still need it!


Edit: Sent @2120hrs
Edited by Jimhans1 - 3/31/14 at 9:20pm
post #9496 of 16481
Ok, thank you sir I'll give it a go in the morning. I didn't mean to bother you guys with it, hoping someone else could help but thanks a lot.

Going to do it tomorrow and then try the rest after some quick benches.Yahooo ! lol
thumb.gif

Thanks again!


FF
smile.gif
post #9497 of 16481
Quote:
Originally Posted by 50shadesofray View Post

Any have an info on the 780ti's performance at 5760x 1080p?!!!!

They should perform really well. the whole 3GB thing really shouldn't be an issue. high AA takes a major toll on performance in surround either way.
IT'S WHITE
(21 items)
 
 
CPUMotherboardGraphicsGraphics
4930k Rampage iv extreme Black Edition GTX Titan  GTX Titan 
GraphicsRAMHard DriveHard Drive
GTX Titan GskillZ Trident X Samsung EVO samsung 840 evo 
Optical DriveCoolingCoolingOS
Asus External Blue Ray drive 4x 480x60mm Swiftech MCP35x2 Win 8.1.2 
MonitorMonitorMonitorPower
AOC AOC AOC EVGA G2 1300w 
CaseMouseMouse PadAudio
STH10 RAT7 what is this?  Vali / Modi :(  
Other
Corsair HX850 
  hide details  
Reply
IT'S WHITE
(21 items)
 
 
CPUMotherboardGraphicsGraphics
4930k Rampage iv extreme Black Edition GTX Titan  GTX Titan 
GraphicsRAMHard DriveHard Drive
GTX Titan GskillZ Trident X Samsung EVO samsung 840 evo 
Optical DriveCoolingCoolingOS
Asus External Blue Ray drive 4x 480x60mm Swiftech MCP35x2 Win 8.1.2 
MonitorMonitorMonitorPower
AOC AOC AOC EVGA G2 1300w 
CaseMouseMouse PadAudio
STH10 RAT7 what is this?  Vali / Modi :(  
Other
Corsair HX850 
  hide details  
Reply
post #9498 of 16481
Hey all.

Found the forum the other night when I was Googling about my faulty Gigabyte GTX780ti Windforce.
Major artifacts in 3D Mark 11 unless I down clocked the VRAM by 200Mhz. (everything else was fine)

Read through all the posts in this thread and I gathered the general consensus was don't buy Gigabyte.

I ended up returning the Gigabyte card and got a ASUS GTX780Ti DirectCU II OC.

Didn't notice much performance or Temp differences between the two cards other than the VRM's are a lot hotter on the Asus card around 95c (not that I could monitor the Gigabyte one).
Also when I run a benchmark, GPU-Z picks up VRM temp spikes, it will hit 416c or -256 for a split second then go back to registering the temps normal, Don't know if its the card or GPU-Z.

On another note Gigabyte release a BIOS update for the GV-N78TOC-3GD if it helps anyone.
http://www.gigabyte.us/products/product-page.aspx?pid=4839#bios

Didn't want my first post to be a "help me" post though biggrin.gif

Thanks all and I hope I can continue to contribute to the forum.
7820x TUF
(8 items)
 
  
CPUMotherboardGraphicsRAM
7820x Asus x299 TUF Mark 1 Asus GTX1080ti Strix Corsair Vengeance LPX CMK32GX4M4B3200C16 32GB (... 
CoolingOSMonitorPower
Corsair H1150i Windows 10 Acer Predator XB271HU Corsair HX850i 
  hide details  
Reply
7820x TUF
(8 items)
 
  
CPUMotherboardGraphicsRAM
7820x Asus x299 TUF Mark 1 Asus GTX1080ti Strix Corsair Vengeance LPX CMK32GX4M4B3200C16 32GB (... 
CoolingOSMonitorPower
Corsair H1150i Windows 10 Acer Predator XB271HU Corsair HX850i 
  hide details  
Reply
post #9499 of 16481
Stock BIOS: BF4 stable @ 1250
Sky BIOS: DirectX error, BF4 stopped working @ 1225

I am sure this is user error...somehow. I just don't know how.
post #9500 of 16481
Quote:
Originally Posted by OccamRazor View Post

Best? Water block! By far the most heat generating part of the VRM modules are the mosfets (metal-oxide semiconductor field-effect transistor):

MOSFETs come in four different types. They may be enhancement or depletion mode, and they may be n-channel or p-channel. There are also logic-level MOSFETs and normal MOSFETs. The only difference between these is the voltage level required on the gate.




This one (your card has 8 of them) in your 780Ti is a FDMF6823A that integrates a driver IC, two power MOSFETs, and a bootstrap Schottky diode into a thermally enhanced 6x6mm package!

The performance of a heatsink is dependant on many variables such as location in the equipment, effective airflow, fin spacing, fin height, fin thickness, base thickness, shape, and overall length. Consequently the impact on the performance of a heatsink mounted other than vertically is not a fixed number, and may depend on the inter-relationship between two or more of these variables!
Now, its my personal opinion that these VRM power sections should be always cooled with water! (Water as in water cooled block) tongue.gif
Semiconductors common rule of thumb (although not exactly accurate) is that every 10ºC reduction in the junction temperature of a semiconductor will double the life expectancy of that semiconductor! Like i always say the cooler the better! smile.gif
The front heat spreader in the Classys are a good idea as it spreads the heat throughout the plate that is in turn cooled by the fans!
If you go with individual heatsinks (i do not recommend it, but some will as they use it and never had a problem...rolleyes.gif) be sure to use big ones (enough to make room for all) on each mosfet, with thick base and tall fins AND a very good airflow through them, with high performance fans! wink.gif
But think of.... Water! thumb.gif


Cheers

Ed

(Team skyn3t)




You replied more extensively than I expected, thanks m8!

I don't suppose you have any recommendations for water-cooling systems. I have no problem with strapping on a waterblock, but there is no AIO water-cooling system compatible with VGA blocks (which baffles me), meaning that for those the only solution is custom loops, and that's a scary realm of overclocking. worriedsmiley.gif

I've read up on what's needed in customer loop, and it looks like mad-scientist labwork to me. Got any words of wisdom for me?
my build
(6 items)
 
  
CPUMotherboardGraphicsRAM
i7-4770K GA-Z87X-OC EVGA 780 TI SC 16 GB 
OSPower
Windows 8.1 1200W PSU 
  hide details  
Reply
my build
(6 items)
 
  
CPUMotherboardGraphicsRAM
i7-4770K GA-Z87X-OC EVGA 780 TI SC 16 GB 
OSPower
Windows 8.1 1200W PSU 
  hide details  
Reply
New Posts  All Forums:Forum Nav:
  Return Home
  Back to Forum: NVIDIA
Overclock.net › Forums › Graphics Cards › NVIDIA › [Official] NVIDIA GTX 780 Ti Owner's Club