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Old 03-26-09   #11 (permalink)
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Good call, Mike.

First thing I usually do with a new card is find out all the possible straps within a couple hundred MHz above my stock speeds (using the sliders/rivatuner graphs, I slowly increase/apply changes, one at a time, just to see which discreet clocks the graphs tell me the card is able to run at), and then jot them all down, so I'll always know what they are. This concept of straps applies not just to shaders, but to all three clocks, just so you know. Once you start watching the RT graph application, you'll start to understand what we mean by 'straps', if you don't already.

This is always helpful later, when I actually go to do the stability tests, I won't accidentally test the same 'step' (aka the same actual speed, as opposed to what the slider says, which is really just an approximation) twice.

Other than that, though (and it's just 'how I do it', not what's right or wrong ) your instructions sound great man!

Oh, and BTW ... yeah, ATITool pretty much always will give you the idea that your card is stable at higher clocks than it really is. Try running a few Crysis benches, and a couple runs of 3dMark06, if you wanna really check to see if you're stable...
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really i don't think overclocking will be worth the risk for me i rather play it safe and upgrade my graphics card every year and cpu instead of overclocking.
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Last edited by brettjv : 03-26-09 at 03:49 AM
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Old 03-28-09   #12 (permalink)
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Originally Posted by Mikecdm View Post
I've been overclocking my gtx 260 for the past two days, while I have time. I found that it was easier for me to find out my max shaders first. I was really just looking to max out the shaders for folding, but right now I'm doing the core as well.

You have heard about the 2:1 ratio, but do you know about the shader straps? The shader moves in 54mhz increments. Even if you move it by 10mzh or 5mhz, for it do anything you need to move by 54mhz. If you select numbers in between the straps it will go to one or the other depending on how close it is.

With that in mind, I got my shaders upto 1566mhz, with stock core, then started working on the core. Right now core speed is at 771mhz, but I have only been testing with ATItool. It might be really unstable doing anything else, but ATItool hasn't found any artifacts yet.

It does artifact in just a few minutes with the shader at the next strap, which is 1620mhz. Also, I haven't gotten to the memory yet.
hmm so I have to increase the shader by 54mhz each time?
What about core clock and memory clock? Are they fine to increase a little bit instead of a massive jump?
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