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~~The GTX 670 Overclocking Master-Guide~~ - Page 84

post #831 of 3357
Anyone have any advice on overclocking sli 670 sc 4gbs? I cannot for life of me get this sli setup stable in games. Max I've been able to get in Heaven in +122 power, +104 gpu offset, +175 mem offset with sync on stable with max voltage set in precision x. Temps under about 64-67 on both cards.

BUT

However in games. Primarily GW2 atm. The display driver crashes and won't even recover. I've had to back it down to +90 gpu and +150 mem to make it stop crashing in GW2. Temps about 65-68 in game.

Seems like such a low overclock to what some of you guys are getting on your gpu and mem offsets.

This is my first time overclocking in sli, so any help is appreciated.
Edited by Descadent - 9/6/12 at 6:32pm
post #832 of 3357
After reading the part about the drop offs in GPU clock & use, and that it is okay. I saw a drop in everything except clock & voltage at one point. Is that something bad? The test went fine, other than that. Any opinions are appreciated!! Here is a pic -
EDIT - sorry, I know this is a 670 board, but it's where i read the info, and that has my interest more than the particular card (and they are both keplars).

Edited by twztid13 - 9/6/12 at 9:11pm
   
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post #833 of 3357
I have the asus 670 (not top) and have a few questions please help because im new to overclocking

Anything over 1100mv causes my clock to drop 200mhz and become unstable, what causes this?

I can only get a perfectly straight line on my gpu clock in the hw monitor at minimal overclocking with heaven scores about 940 but i can get an overclock up to 1180 boost clock and 1765 memory clock that will give me a heaven score of 1700. how important is it to have a perfectly straight line? the clock fluctuates about 50 mhz

also when i open gpu-z i get a error for intel opengl bug but it still allows me to open gpu-z does this have any effect on my gpu performance?

also the gpu clock is a straight line during furmark

thanks
Edited by Stonedsoul - 9/8/12 at 11:31am
post #834 of 3357
Quote:
Originally Posted by Stonedsoul View Post

I have the asus 670 (not top) and have a few questions please help because im new to overclocking
Anything over 1100mv causes my clock to drop 200mhz and become unstable, what causes this?
I can only get a perfectly straight line on my gpu clock in the hw monitor at minimal overclocking with heaven scores about 940 but i can get an overclock up to 1180 boost clock and 1765 memory clock that will give me a heaven score of 1700. how important is it to have a perfectly straight line? the clock fluctuates about 50 mhz
also when i open gpu-z i get a error for intel opengl bug but it still allows me to open gpu-z does this have any effect on my gpu performance?
also the gpu clock is a straight line during furmark
thanks
post #835 of 3357
So I've been fiddling with this today and I have no experience.

I got it to a stable point at a 129 MHz cpu offset and 200 MHz mem offset (i didn't tweak it very thoroughly).


This is with power target set to max ar 122% and vcore set to max at 1175. Power % is around 30 with miniscule 31-32 spikes.

Now my temperatures never exceed or hit 70 (max at 68 actually with 85% fanspeed).

Is it healthy with that high vcore and power %? And are my temperatures acceptable? Actually screw vcore, turns out it runs stable with those speeds at default vcore of 998. Weird that I cant oc more with higher vcore..
Edited by Whinewhisper - 9/9/12 at 2:28pm
post #836 of 3357
My clocks are stable in EVGA Precision X, but if I enter the same values in MSI Afterburner they are not stable, I want to use MSI Afterburner cause I want the record feature, any tip to solve this issue with AB? Anyone else had the same problem?
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post #837 of 3357
Hi guys, I wonder if anyone can help me.

I've got an MSI gtx 670 card, and I'm kind new to overclocking, so I'm attempting to stick to the guide to the letter.

However during the testing my card goes over 70C and part of the reason I believe is because somehow my GPU fan speed seems to be locked at 80% no matter how I set up my fan profile.
Can anyone tell me if I can unlock this? If not, is there a suggested approach to testing knowing that I can't really avoid passing the 70C mark?
post #838 of 3357
Hello I'm new to overclocking and I followed this guide to the best of my ability. Now, when trying to find my maximum memory offset, I see green light shafts in the same places of the Heaven benchmark no matter what the memory clock offset. I've tried anywhere from 0-100+. It even shows in the negatives. The only point where I haven't seen green light shafts is when I set the memory clock offset to -200. Yes, that's negative 200. What does this exactly mean? I've had no issues running games at all.
Here's my Precision X


The point in which I normally see the light shafts in the benchmark is right after the dragon statue, when the camera is looking at a windmill. It's around step 10-12 in the benchmark.

Does anyone have any idea what exactly is going on here?
post #839 of 3357
Quote:
Originally Posted by mannylulz View Post

Hello I'm new to overclocking and I followed this guide to the best of my ability. Now, when trying to find my maximum memory offset, I see green light shafts in the same places of the Heaven benchmark no matter what the memory clock offset. I've tried anywhere from 0-100+. It even shows in the negatives. The only point where I haven't seen green light shafts is when I set the memory clock offset to -200. Yes, that's negative 200. What does this exactly mean? I've had no issues running games at all.
Here's my Precision X

The point in which I normally see the light shafts in the benchmark is right after the dragon statue, when the camera is looking at a windmill. It's around step 10-12 in the benchmark.
Does anyone have any idea what exactly is going on here?

there's a bug in Heaven that show's those in the same place. ignore them.
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post #840 of 3357
I was trying to set up the fan curve at the end. However, I have not been able to get the temps to get above 60C (pic shows 59) at 50% fan speed. Any thoughts on why even with the "overkill" program, temps aren't really increasing. Essentially, I'm just worried about setting the fan curve any lower and having temps skyrocket when I'm not staring at it.



EDIT: This on a GB windforce card. (Finally settled on 69C at 38% fans)
Edited by SeanK67 - 9/11/12 at 9:36pm
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