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~~The GTX 670 Overclocking Master-Guide~~ - Page 53

post #521 of 3357
Quote:
Originally Posted by testicles View Post

was wondering the same thing myself, so i just left them at stock because i dont think its safe to max the voltage??

well you aren't really maxing anything. We can't really control the voltage like we could with the previous generations. Anything you can set your card to now is safe, though maybe not always stable.
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post #522 of 3357
Wooot
Quote:
MSI Afterburner Version 2.2.3 (2012/7/24)
Revised I2C access API for NVIDIA 301.xx and newer display drivers
Added core, memory and auxiliary PEXVDD voltage control for custom design MSI N680GTX Lightning series graphics cards with CHL8318+uP6262 voltage regulators
Added memory and VRM temperature monitoring for custom design MSI N680GTX Lightning series graphics cards with NCT7718W thermal sensors
Added core, memory and auxiliary PEXVDD voltage control for custom design MSI N670GTX Power Edition series graphics cards with uP6262 voltage regulators

Can someone teach me how to OC now using Memory Voltage and Aux Voltage?
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post #523 of 3357
Quote:
Originally Posted by ShotgunBFFL View Post

Wooot
Can someone teach me how to OC now using Memory Voltage and Aux Voltage?
Same as before but now you can hit much higher on your clocks with the voltages cranked up. is your voltage still locked at 1.175?
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post #524 of 3357
Thread Starter 
Quote:
Originally Posted by ShotgunBFFL View Post

Wooot
Can someone teach me how to OC now using Memory Voltage and Aux Voltage?

That would mean you could overclock that gpu just like you would any other graphics card with unlocked voltage (i.e., increase the voltage to help stabilize an otherwise unstable core value) but you'll also have to monitor the GPU graphs to make sure you don't get throttled by power percent or temperature just like described in this guide.

I would say just follow the guide but instead of reducing the core value whenever you find it unstable, instead just increase the core voltage until it becomes stable (but without causing throttling or oscillation). For example, lets say +250 offset causes instability, instead of backing down to ~+245 to make it stable, instead increase the voltage slightly and keep bumping the voltage slightly until you become stable, then try +255 (etc) and just keep repeating the process of slightly increasing the voltage until either a voltage increase doesn't have an effect, your temperatures get too high (i'd say keep the temps under 79C which is right below the second throttle point, and only go over 70C if you net more than 13MHz to offset the thermal throttle), or you start to get throttling/oscillation from power usage (increasing voltage will increase power usage).
post #525 of 3357
Quote:
Originally Posted by SeanPoe View Post

That would mean you could overclock that gpu just like you would any other graphics card with unlocked voltage (i.e., increase the voltage to help stabilize an otherwise unstable core value) but you'll also have to monitor the GPU graphs to make sure you don't get throttled by power percent or temperature just like described in this guide.
I would say just follow the guide but instead of reducing the core value whenever you find it unstable, instead just increase the core voltage until it becomes stable (but without causing throttling or oscillation). For example, lets say +250 offset causes instability, instead of backing down to ~+245 to make it stable, instead increase the voltage slightly and keep bumping the voltage slightly until you become stable, then try +255 (etc) and just keep repeating the process of slightly increasing the voltage until either a voltage increase doesn't have an effect, your temperatures get too high (i'd say keep the temps under 79C which is right below the second throttle point, and only go over 70C if you net more than 13MHz to offset the thermal throttle), or you start to get throttling/oscillation from power usage (increasing voltage will increase power usage).

Found a stable one and reached 1405 score, one thing i noticed though is the core clock didn't stay consistent (went from 1300-1320) which by what i read in this guide seems like throttling, although it never went over 65C.

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post #526 of 3357
Quote:
Originally Posted by ShotgunBFFL View Post

Found a stable one and reached 1405 score, one thing i noticed though is the core clock didn't stay consistent (went from 1300-1320) which by what i read in this guide seems like throttling, although it never went over 65C.
The same thing happens to me, I go around 1293-1313. I have no idea why. I hope drivers will fix it mad.gif
Nice card though 1323!
EDIT: lol i just realized that both of our clocks are inconsistent by 20mhz.
Also your voltage doesnt go over 1.175 doh.gif its true Nvidia did lock it
http://www.guru3d.com/article/msi-gtx-680-lightning-voltage-tweaking/

Nvidia you greedy bastards.
Edited by General123 - 7/24/12 at 6:55pm
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post #527 of 3357
Quote:
Originally Posted by General123 View Post

The same thing happens to me, I go around 1293-1313. I have no idea why. I hope drivers will fix it mad.gif
Nice card though 1323!
EDIT: lol i just realized that both of our clocks are inconsistent by 20mhz.

Yea I got it to 1337 ;_; (childish I know) and it ran until like test 20/26 on heaven...
Was soo excited but then it crashed mad.gif


Edit: got a little higher score, bumping memory up to +415


Also, idk if it's just me but it seems to run smoother when my PT is lower, or closer to what its actually drawing, the measured Power % only gets to 104 and setting it at 110 looks smoother than the max 114.
Edited by ShotgunBFFL - 7/24/12 at 7:21pm
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post #528 of 3357
Quote:
Originally Posted by ShotgunBFFL View Post

Yea I got it to 1337 ;_; (childish I know) and it ran until like test 20/26 on heaven...
Was soo excited but then it crashed mad.gif
Edit: got a little higher score, bumping memory up to +400
I just beat my high score I took the core down to 1283 and the memory up to 1860 biggrin.gif



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post #529 of 3357
Quote:
Originally Posted by ShotgunBFFL View Post

Yea I got it to 1337 ;_; (childish I know) and it ran until like test 20/26 on heaven...
Was soo excited but then it crashed mad.gif

which drivers are you using? I could get through heaven benchmark at 1234MHz (+150 offset) using the WHQL drivers but with 304.79 beta it would fail around 20/26 like you. That could suggest my +150 with WHQL might not be stable and need to run couple hours heaven to be sure

@SeanPoe, thanks for the great guide.

Just one point. Maybe I've misread, but the second point of "Step 3: Fine Tuning your Memory Offset" doesnt look right. If you experience instability/artifacts shouldn't you be moving on to step 4 rather than repeating step 3 which increases offset with each iteration of the step?
post #530 of 3357
Quote:
Originally Posted by Blam View Post

which drivers are you using? I could get through heaven benchmark at 1234MHz (+150 offset) using the WHQL drivers but with 304.79 beta it would fail around 20/26 like you. That could suggest my +150 with WHQL might not be stable and need to run couple hours heaven to be sure
@SeanPoe, thanks for the great guide.
Just one point. Maybe I've misread, but the second point of "Step 3: Fine Tuning your Memory Offset" doesnt look right. If you experience instability/artifacts shouldn't you be moving on to step 4 rather than repeating step 3 which increases offset with each iteration of the step?

301.42
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