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Overclocking the GTX 580

post #1 of 59
Thread Starter 
Sorry being dumb here.

I have recently clocked my cpu for the very first time, I managed my 2500K to 4.6 with 1.36v.

Now its time for the GPU but I must admit that I dont understand this.

I have Zotac GTX 580
I have downloaded afterburn 2.1 and FurMark.
In the afterburn program I have enabled so that I can change the settings. But dont really understand the FurMark program or what I am going to look out for when testing.
My temps are going up to 90* pretty fast when I have theese settings, then they are stabilizing around 89-90 degrees.

SETTINGS IN AFTERBURN NOW:

Core Voltage (mV) : 1025
Core Clock (MHz): 810
Shader Clock(MHz): 1620
Memory Clock(MHz): 2040

There isnt a good guide to clock this card what I have found out. I have the stock cooler. Have also downloaded GPU-Z.
I understand that Im not supposed to touch the Core Voltage, and that maybe I am going to start with the Core Clock settings. Then start the FurMark. But Im beeing afraid to ruin something, because the temps are so high and I dont know if thats normal. Am I going to watch this FurMark for something in the picture, like colorspots or something? Dont really understand this.

Please help me understand what to do here!
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post #2 of 59
Up your Fan Speed, then stress test in Furmark. These cards can take 105*c.
    
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post #3 of 59
Thread Starter 
Quote:
Originally Posted by MR KROGOTH View Post
Up your Fan Speed, then stress test in Furmark. These cards can take 105*c.
Should I set fanspeed to something special, and will the computer made more noise with this? (just wondering, not caring so much about noise)

And, should I press "apply" before running in FurMark or is the "apply"-button after I have finished testing in FurMark so that all is good?

Am I supposed to check for something else then the temp?
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post #4 of 59
Do not use Furmark for stability testing..

Use Crysis bench loop (30min),3dMark 11 loop,Heaven benchmark loop..

OCing a GPU is simple..

1. Start upping GPU frequency by 10MHz..

2. Then quick stability testing with 10 loops of Crysis bench(or Warhead ,Crysis 2)

3. If you pass then up GPU freq again by 10Mhz and test egain and so on..

3. Once card becomes unstable add a bit of Voltage to GPU (by 0.025V) and test again..

If you pass then up GPU frequency again by 10MHz and test again ..

And procedure repeats untill your GPU start to run too hot and that's temps over 95C..

When you find your max stable GPU speed and within temperature limit then test it with 30 loops of Crysis,15min of Heaven bench and 3dMark 11 loop..

Also I would keep GPU voltage under 1.1V..

OCing a memory:

The same process as for GPU frequency with only difference being that you will not be able to add voltage to memory..

Once it becomes unstable (shows corrupted image and artifacts on the screen) back down to previous stable memory frequency..

CHEERS..
Edited by KingT - 5/30/11 at 8:43am
     
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post #5 of 59
I agree with the above post.. I have the same GPU and can hit 900mhz core at 1.1volts in a 3DMark 11 loop. But, my memory on that GPU hates to be overclocked so I keep it at stock speed.. I usually only use that high volts and clock for benching.. Otherwise it is overclocked to what it is in my sig rig.
Edited by ep45-ds3l - 5/30/11 at 8:44am
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post #6 of 59
Thread Starter 
Okay, thanks for that, Am I supposed to get the games to have their benchmark? Downloaded Crysis Benchmark Tool, but I cant run the program without pointing to the Crysis folder. I have no game installed.

"once card get instable" - how do I see when its unstable? Or is it the temp only?
In FurMark even with the fan up to 85% (max setting) I got temp on 90* with the same settings, so I did not noticed difference from having the fanspeed to auto
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post #7 of 59
Quote:
Originally Posted by Akehage View Post
Okay, thanks for that, Am I supposed to get the games to have their benchmark? Downloaded Crysis Benchmark Tool, but I cant run the program without pointing to the Crysis folder. I have no game installed.

"once card get instable" - how do I see when its unstable? Or is it the temp only?
In FurMark even with the fan up to 85% (max setting) I got temp on 90* with the same settings, so I did not noticed difference from having the fanspeed to auto
Yes you need to have a Game in order to run benchmark..

But 3DMark 11 Basic edition is free and also Unigine Heaven benchmark is free so you can use them..

When GPU becomes unstable in the benchmark/game then the nVidia graphic driver will crash..

You will know when it happens but do not hard reset the system ,just wait until driver recovers..

You can also press Ctrl+Alt+Del in order to call TaskManager and to stop the benchmark..

CHEERS..
     
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post #8 of 59
Thread Starter 
Okay, in that case I have now downloaded both the 3D11 Benchmark and the Heaven Benchmark.
So I just edit the settings in afterburner now, keeping the mV at 1025 in the beginning.
Start by 10MHz step and then test with either one of the program? Is there a specific run in this benchmarkprogram I have to choose?
And, when I get error I just back the settings to the one before that seems to work, than start editing the memory clock as the same procedure?
What should the fan speed be at? And do I have to press "Apply" on Afterburner before doing the tests? - Or is this "apply" when everything is done and I am happy with the final settings?
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post #9 of 59
Quote:
Originally Posted by Akehage View Post
Okay, in that case I have now downloaded both the 3D11 Benchmark and the Heaven Benchmark.
So I just edit the settings in afterburner now, keeping the mV at 1025 in the beginning.
Start by 10MHz step and then test with either one of the program? Is there a specific run in this benchmarkprogram I have to choose?
And, when I get error I just back the settings to the one before that seems to work, than start editing the memory clock as the same procedure?
What should the fan speed be at? And do I have to press "Apply" on Afterburner before doing the tests? - Or is this "apply" when everything is done and I am happy with the final settings?
Yes keep voltage at stock (1025mv)..

Upp GPU freq by 10MHz and test with Heaven benchmark for 10minutes..

If it passes then upp GPU freg again by 10MHz and test again and so on..

Once heaven bench crashes then add sone voltage to GPU and test again..

Always watch GPU temperature and keep it under 90C..

When you hit the point when your temperature is reaching over 90C then stop and consider it as your cards max OC..

Also keep your voltage under 1.1V..

After you're done with overclocking GPU then start OCing memory with the same methodology..

And yes you have to hit "APPLY" button to set your card's speed otherwise it will not be OC'd..

CHEERS..
     
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post #10 of 59
Thread Starter 
Okay, thanks!
Final stupid question before starting (will come more later on for sure )
Does the heaven benchmark show me the temps, or do I have to use a program for that, like GPU-Z and check that one out?

And settings for Heaven? the settings are now at.
DirectX11
Stereo 3D - disabled
Shaders - High
Tessellation - Normal
Anistrofy - 4
Anti-Aliasing - Off
Fullscreen - checked
Resolution - 1280-1024
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