How do I overclock?

[sainthoodx]

Conclusion about unlocking to 16 pipelines:
Hey, so I was only able to change my 6800nu into a (12x1,6), thats 12 pipelines and 6 vertex shaders instead of the standard (12x1, 5) (the 12 pipeline and 5 vertex shaders). This increase doesn't really change my benchmarking a whole lot. Whenever I set it to 16 pipes, the log in and desktop screen would be scattered with black lines that warped around and games wouldn't even load up. I guess that means that my card cannot be unlocked to 16 pipelines? Is there a way to open the pipes successfully? Maybe with different drivers and programs? Thanks for input here.

Overclocking?:
Basically I need some guidelines, and maybe some past experience with overclocking 6800nu's. Whats a good overclock speed for the 6800 vanilla? Default clock: 325MHz gpu with 700MHz effective memory. Thanks for input here.

 

[Leper Messiah]

well, from what I hear, if you unlock the pipes, and they work, you can't OC as well, so you can try OC it.

 

[Lord Banshee]

I was able to get 377/775 stable... (12p 6v also)

 

[sainthoodx]

Is there some instructions on how to overclock?

 

[sainthoodx]

For the love of non-tech savvy people who want to learn the ropes, please teach me how to OC a 6800nu! Where would a scholar like me find myself homework to do?

Thanks in advance!

 

[sisq0kidd]

When I had my 6800nu, it unlocked 16p 6v and overclocked to 400/825.

So yeah, I guess I was lucky.

You basically overclock it little by little until it either freezes, locks up, restarts, checkboards or catches fire.

 

[professor1942]

I had the same luck with unlocking the extra 4 pipes - it didn't work. If your display is garbled with 16 pipes then you can give up on that idea. To overclock, download and install Coolbits 2:

http://downloads.guru3d.com/download.php?det=815

and you will have extra features in your nVidia control panel; one of them is clock frequency settings. You're starting at 325/700, just up it in 5 Mhz increments with each and test each step with a game/benchmark - you should easily be able to get up to at least 350/750 before things start screwing up. Just take your time and don't go too high too fast.

 

[Shooks]

quick question about coolbits, if you are using an SLI setup and you adjust the clocks, does it change both cards?

 

[professor1942]

http://www.slizone.com/object/slizone_ask_mmm005.html

 

[Shooks]

thanks prof

 

[sainthoodx]

Thanks for that short yet extremely informative post.

What benefit does a 6800 with an extra vertex shader have? Like 6 instead of 5, set to (12,6) instead of (12,5)?