Overclock.net › Forums › Graphics Cards › NVIDIA › Need some clarifcation OCing SLI GTX 670
New Posts  All Forums:Forum Nav:

Need some clarifcation OCing SLI GTX 670

post #1 of 7
Thread Starter 
Hello everybody.

I have 2 reference eVGA GTX 670 2GB, regular versions ( not SC or FTW ).

Voltage = max 1.175v
Power % = +122

Ok, so my boost clock for both cards is 1075mhz. My max GPU clock according to GPU-Z is 1228mhz for card 1, 1189mhz for card 2. Offset is +95 on CPU, +0 on memory. At +100mhz on core, I crash. I still need to get my temps under control as I am breaching 70 by a few degrees every time, but I hope adding 2 120's blowing on the cards plus a 140 on the bottom of the case will fix that. Case is a HAF 922.

Anyway, is the second card running at 1189 limiting my first card, which runs at 1228?

Secondly, what are some other people getting on ref cards? I looked through the thread dedicated to OCs on the 670 but most are non ref versions, not sure if it matters. Also, this seems like a pretty weak OC. Anyone else crashing this low?

Third: If one card is not limiting the other, how can I find out which card is causing the crash, or is more unstable? If the card running at 1228mhz is limiting, should I push a higher overclock on card 2 to get them level under load?

If you also have any info/suggestions/tips that aren't exactly related to these three questions, please leave them here. I'm new to OCing, and it seems that GTX 600 is also a weird series to OC, so double-crap.

Here are some pics of my PrecX graphs.
perf log 95-000.png 111k .png file
perf log 95-000 run 2.png 107k .png file
post #2 of 7
Just my opinion here, firstly you should get rid of the crappy 70C throttling crap that affects Kepler cards, to me that way to soon of a precaution and makes it hard to find a stable overclock. That is done with a BIOS mod, secondly while modding the BIOS to remove the throttling you then can modify it to give it more voltage which MIGHT stop your crashing because the card is getting more juice. Don't worry if your temps raise a bit because of the higher voltage because anything in the 70's is perfectly safe for these cards
My System
(14 items)
 
  
CPUMotherboardGraphicsRAM
Core i7 6700K @4.8Ghz Gigabyte Z170X Gaming 7 Gigabyte 980 ti G1 Corsair DDR4 16GB @3000mhz 
Hard DriveOptical DriveCoolingOS
Crucial M4 256GB SSD Sony DVD/RW Zalman CNPS9900-MAX Windows 8.1 Pro 
MonitorKeyboardPowerCase
Dell 27" S2716DG G-Sync 1440p Saitek Eclipse OCZ ZX 850W Storm Stryker 
Mouse
Logitech M510 
  hide details  
Reply
My System
(14 items)
 
  
CPUMotherboardGraphicsRAM
Core i7 6700K @4.8Ghz Gigabyte Z170X Gaming 7 Gigabyte 980 ti G1 Corsair DDR4 16GB @3000mhz 
Hard DriveOptical DriveCoolingOS
Crucial M4 256GB SSD Sony DVD/RW Zalman CNPS9900-MAX Windows 8.1 Pro 
MonitorKeyboardPowerCase
Dell 27" S2716DG G-Sync 1440p Saitek Eclipse OCZ ZX 850W Storm Stryker 
Mouse
Logitech M510 
  hide details  
Reply
post #3 of 7
While I have not overclocked my 670's, the videos below are two of several I have seen where they say you should overclock your memory first since it will ultimately give the bigger boost in fps. Good luck!

https://www.youtube.com/watch?v=l0Yax9gjb6s

https://www.youtube.com/watch?v=vYtIdSbH3jM

http://www.overclock.net/t/1265110/the-gtx-670-overclocking-master-guide#post_17391121
Mild Mod
(18 items)
 
  
CPUMotherboardGraphicsRAM
i7-5930k 4.5Ghz @1.331v Asus X99-A EVGA GTX1070 SC 16Gb Gskill DDR4-2400 
Hard DriveOptical DriveCoolingCooling
850 Pro SSD, 2 Cav Blacks Asus HWLabs 280mm SR-1 and GTX120 mm radiators EK GPU waterblock and backplate 
CoolingOSMonitorKeyboard
EK Supremacy EVO cpu block W7 64 Pro Dell U3011  Razer BlackWidow Ultimate 
PowerCaseMouseAudio
Corsair AX850 Corsair 650d Modded SteelSeries Sensei Raw (heat orange) Creative 5.1 setup 
Audio
Creative Soundblaster Z 
  hide details  
Reply
Mild Mod
(18 items)
 
  
CPUMotherboardGraphicsRAM
i7-5930k 4.5Ghz @1.331v Asus X99-A EVGA GTX1070 SC 16Gb Gskill DDR4-2400 
Hard DriveOptical DriveCoolingCooling
850 Pro SSD, 2 Cav Blacks Asus HWLabs 280mm SR-1 and GTX120 mm radiators EK GPU waterblock and backplate 
CoolingOSMonitorKeyboard
EK Supremacy EVO cpu block W7 64 Pro Dell U3011  Razer BlackWidow Ultimate 
PowerCaseMouseAudio
Corsair AX850 Corsair 650d Modded SteelSeries Sensei Raw (heat orange) Creative 5.1 setup 
Audio
Creative Soundblaster Z 
  hide details  
Reply
post #4 of 7
Thread Starter 
Quote:
Originally Posted by Fan o' water View Post

While I have not overclocked my 670's, the videos below are two of several I have seen where they say you should overclock your memory first since it will ultimately give the bigger boost in fps. Good luck!

https://www.youtube.com/watch?v=l0Yax9gjb6s

https://www.youtube.com/watch?v=vYtIdSbH3jM

http://www.overclock.net/t/1265110/the-gtx-670-overclocking-master-guide#post_17391121
Thanks for the info. I'll watch the vids, and that guide is what I am going off. Seems like I got a crappy OCer.
Quote:
Originally Posted by Xboxmember1978 View Post

Just my opinion here, firstly you should get rid of the crappy 70C throttling crap that affects Kepler cards, to me that way to soon of a precaution and makes it hard to find a stable overclock. That is done with a BIOS mod, secondly while modding the BIOS to remove the throttling you then can modify it to give it more voltage which MIGHT stop your crashing because the card is getting more juice. Don't worry if your temps raise a bit because of the higher voltage because anything in the 70's is perfectly safe for these cards

That pisses me off. At stock this thing gets to 85C when I load it, yet it throttles at 70C. Can you elaborate or send me a few links about flashing bios?
post #5 of 7
Your hitting 85C now? What fan speeds are you using? I wouldn't mess wth the BIOS until you get the temps down a bit, I though you said in your first post that you were barely over the 70C throttling.
My System
(14 items)
 
  
CPUMotherboardGraphicsRAM
Core i7 6700K @4.8Ghz Gigabyte Z170X Gaming 7 Gigabyte 980 ti G1 Corsair DDR4 16GB @3000mhz 
Hard DriveOptical DriveCoolingOS
Crucial M4 256GB SSD Sony DVD/RW Zalman CNPS9900-MAX Windows 8.1 Pro 
MonitorKeyboardPowerCase
Dell 27" S2716DG G-Sync 1440p Saitek Eclipse OCZ ZX 850W Storm Stryker 
Mouse
Logitech M510 
  hide details  
Reply
My System
(14 items)
 
  
CPUMotherboardGraphicsRAM
Core i7 6700K @4.8Ghz Gigabyte Z170X Gaming 7 Gigabyte 980 ti G1 Corsair DDR4 16GB @3000mhz 
Hard DriveOptical DriveCoolingOS
Crucial M4 256GB SSD Sony DVD/RW Zalman CNPS9900-MAX Windows 8.1 Pro 
MonitorKeyboardPowerCase
Dell 27" S2716DG G-Sync 1440p Saitek Eclipse OCZ ZX 850W Storm Stryker 
Mouse
Logitech M510 
  hide details  
Reply
post #6 of 7
Thread Starter 
Quote:
Originally Posted by Xboxmember1978 View Post

Your hitting 85C now? What fan speeds are you using? I wouldn't mess wth the BIOS until you get the temps down a bit, I though you said in your first post that you were barely over the 70C throttling.
I'm sorry to be confusing. Yes, I am only slightly above 70C. What I meant was, I am frustrated that the card runs at 85C temps at stock clocks AND stock fan curve. If the card can handle that from factory, why did nVidia make it throttle at70C? mad.gif Seems pretty stupid considering that card can handle 70C just fine.

I am only hitting about 72-74 degrees C on my current fan curve and cooling.
post #7 of 7
Mod the BIOS then, will cure your issues
My System
(14 items)
 
  
CPUMotherboardGraphicsRAM
Core i7 6700K @4.8Ghz Gigabyte Z170X Gaming 7 Gigabyte 980 ti G1 Corsair DDR4 16GB @3000mhz 
Hard DriveOptical DriveCoolingOS
Crucial M4 256GB SSD Sony DVD/RW Zalman CNPS9900-MAX Windows 8.1 Pro 
MonitorKeyboardPowerCase
Dell 27" S2716DG G-Sync 1440p Saitek Eclipse OCZ ZX 850W Storm Stryker 
Mouse
Logitech M510 
  hide details  
Reply
My System
(14 items)
 
  
CPUMotherboardGraphicsRAM
Core i7 6700K @4.8Ghz Gigabyte Z170X Gaming 7 Gigabyte 980 ti G1 Corsair DDR4 16GB @3000mhz 
Hard DriveOptical DriveCoolingOS
Crucial M4 256GB SSD Sony DVD/RW Zalman CNPS9900-MAX Windows 8.1 Pro 
MonitorKeyboardPowerCase
Dell 27" S2716DG G-Sync 1440p Saitek Eclipse OCZ ZX 850W Storm Stryker 
Mouse
Logitech M510 
  hide details  
Reply
New Posts  All Forums:Forum Nav:
  Return Home
  Back to Forum: NVIDIA
Overclock.net › Forums › Graphics Cards › NVIDIA › Need some clarifcation OCing SLI GTX 670