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Good overclocking guide for new GTX 8800 user?
- Thread starter iMacMart
- Start date
The overclocking tool most ppl seem to be using is rivatuner. D/l it and let it detect the card's default clock speeds, then raise the core speed until frezzing/lockups occur then back it off till its stable. Do the same for the momory until artifacts start and back that off. Thats a basic guide, but if you do a search you'll find most ppl overclock their cards to about 625-650 core, and 950-200 memory. I've currently got my ocuk 8800GTX at 625 core/ 950 memory which appears to be about average and I don't feel the need to push it further and I certainly don't wanna mess around with voltages even if the option is there.
I think the default was showing as 600/900 which is correct so I may have a bash later and see what it can do 
I won't be touching any volts though, or flashing anything, the card is amazingly fast anyway and cost my £334 so I do not want to be breaking it
Thanks for the reply though
I won't be touching any volts though, or flashing anything, the card is amazingly fast anyway and cost my £334 so I do not want to be breaking it
Thanks for the reply though
I prefere to use ATI tool to find the max core and memory since it has a 3d burn in test although still check by running 3dmark etc just to be sure that its stable.
Then use the settings from ATI tool in Rivatuner so it loads the higher clocks on booting.
And if you are using the lastest beta drivers note that the shader clock is now seperate and does not alter with the core clock.
ATI tool and Rivatuner are working on new versions to allow you to alter the shader clock.
Best to use the older beta drivers as the shader clock goes up in proportion to the core and shader clock increases give you the best boost in fps.
I have found that for the best gains you will find shader > core > memory is the order of merit. Memory speed does not seem too important and doesn't give that much of a boost.
Therefore find your max stable core speed and then find the maximum memory which works with that core speed and stable to give you the maximum performance. Don't go for higher memory in preference to core speed.
Can't wait till you can alter the shader speed by itself as a lot of cards seem to be able to run fine at 1780 (maximum) but you would need something like 800 on the core to get this when they are linked together and that is highly unlikely.
Then use the settings from ATI tool in Rivatuner so it loads the higher clocks on booting.
And if you are using the lastest beta drivers note that the shader clock is now seperate and does not alter with the core clock.
ATI tool and Rivatuner are working on new versions to allow you to alter the shader clock.
Best to use the older beta drivers as the shader clock goes up in proportion to the core and shader clock increases give you the best boost in fps.
I have found that for the best gains you will find shader > core > memory is the order of merit. Memory speed does not seem too important and doesn't give that much of a boost.
Therefore find your max stable core speed and then find the maximum memory which works with that core speed and stable to give you the maximum performance. Don't go for higher memory in preference to core speed.
Can't wait till you can alter the shader speed by itself as a lot of cards seem to be able to run fine at 1780 (maximum) but you would need something like 800 on the core to get this when they are linked together and that is highly unlikely.
Three settings actually. 2d, low 3d and high 3d and you can set the fan for each as well as the clock speed.
I leave my 2d on stock and 60% fan, low 3d slightly overclocked and 75% fan and high 3d on 100% fan and overclocked to hell
i have both my cards at 621 core and 1010 mem, really want to push it further, but when i check for artifacts in ATI tool, i get yellow like objects if i push it any further, but no artifacts, anyone know if this is normal? or does it mean it isnt going to be stable?
ags
ags
I always stop when I get the yellow dots. I know ATI tools don't count them as errors but i'd rather not push it too far.
Better guaranteed stable IMO than pushing the limits. I'm already overclocking by more than 25% from stock. Good enough in my books
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Since the 6000 series they have had seperate clocks (not sure on all models but did for 6600/6800's).
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Found this thread via search, and got a few questions, so if I have this correct I download both RivaTuner and ATITool. I then go into RivaTuner and click on the button next to driver settings, and click the little GPU icon and then go to 3D Performance and then start to change things.
And then run ATITool to check for Artifacts, and 3DMark to check for performance improvement.
Is that it, roughly? It seems simple enough, but I don't want to mess up my new 8800 GTX now
Also what is a good program to check for GPU temp, and also how long should I leave this Artifact test running for? I think my GPU might be making a slight buzzing noise running this Artifacting when OC'd is this normal? Or something I should worry about.
And then run ATITool to check for Artifacts, and 3DMark to check for performance improvement.
Is that it, roughly? It seems simple enough, but I don't want to mess up my new 8800 GTX now
Also what is a good program to check for GPU temp, and also how long should I leave this Artifact test running for? I think my GPU might be making a slight buzzing noise running this Artifacting when OC'd is this normal? Or something I should worry about.
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Found this thread via search, and got a few questions, so if I have this correct I download both RivaTuner and ATITool. I then go into RivaTuner and click on the button next to driver settings, and click the little GPU icon and then go to 3D Performance and then start to change things.
And then run ATITool to check for Artifacts, and 3DMark to check for performance improvement.
Is that it, roughly? It seems simple enough, but I don't want to mess up my new 8800 GTX now
You don't need to use Rivatuner to set speeds, you can just use ATI tool. I just use Rivatuner to set my max speeds once I have found them as you can have them load on boot with Rivatuner.
What you have suggested above is roughly right and would work except I have these tips for you.
1.USe 163.44 drivers or earlier. 163.67 and 163.69 both don't alter the shader clock as you overlock the core and increases in shader clock give the best fps improvement. In next version of rivatuner and ati tool there will be a seperate slider for the shader clock so this doesn't apply.
2. Leave you memory alone to begin with and find your max core first. Since shader clock going up in relation to core this gives you the best gains.
3. Load Rivatuner and run hardware monitoring. This will show you clock speeds and temps.
4. Note that your core and shader clock speeds will go up in jumps. Search this forum to find more info on this but it's nothing to worry about.
5. You may want to alter your fan settings in Rivatuner in order to get the best overclock. SO long as it's not to noisy best to set the default fan speed for performance 3d to 100%.
6. Now run scan for artifacts on ATI tool to get the GPU heated up. No point overclocking until you do as it will give you a speed which wouldnt be stable.
7. Once the temperature has levelled out you can now start overclocking.
8. Easiest way is is let ATI tool find max core. Keep going until you see artifacts then set the core speed slightly below this. Run 3dmark06 and play some games for a few hours to make sure all things are stable.
9. Now ignore what ATI says about finding max memory. It says you should drop the overclock of the core. I disagree since the overclocked core will always give you more fps than the memory. SO let ATI find the max memory clock. Run 3dmark06, games etc to check for stability.
10. Once you have your maxes, set them in Rivatuner to load on boot and you are sorted
http://www.benchzone.com/page.php?al=geforce_overclocking_gui
*EDIT* just clicked the link in the post above....repost sorry!
*EDIT* just clicked the link in the post above....repost sorry!
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Sorry are you saying Don't use 163.44 drivers or earlier or do?
Sorry, just to make it clear use 163.44 or earlier to get the maximum overclock for now until the next version of rivatuner of ati tools is out and you can alter the shader seperately.
You can still use 164.67 or 163.69 if you want but as you overlock the core, the shader clock will stay static. This results in less of a fps gain from the overclock and slower 3dmark06 scores.