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Stupid question?

post #1 of 17
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how come some people are able to overclock the same video card to a higher amount then someone else? don't all the video cards have the same potential?
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post #2 of 17
A number of things affect the overclock.

The chip itself, the voltage available, the voltage that can be made available (V-mod), software, etc
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post #3 of 17
Basically, you can't perfectly replicate two video cards. In addition to that, even if you had the same card, you may have different software, different PSUs, different rig factors, etc...
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post #4 of 17
Quote:
Originally Posted by tbunreal View Post
how come some people are able to overclock the same video card to a higher amount then someone else? don't all the video cards have the same potential?
Not all video cards are 100% exactly the same thus giving us "luck". When I wasn't running sli ive seen people getting the core from 400 stock to 130mhz higher than that stable. Mine has a care of 450 and i still cant get it past 510 stable!
post #5 of 17
Thread Starter 
k, thanks
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post #6 of 17
So does that mean if I changed the voltage of my card in my bios I would get a higher OC?

As stated by joeKing78!
 
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post #7 of 17
Yeah.

I upped my X1950XTX voltage through Ati Tool and achieved 790mhz core with 1.55v but I can only reach 702mhz on stock
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post #8 of 17
In most cases yes. But i didnt think you could, unless you flash the BIOS. And its not worth it. Except for volt mods of course

EDIT: Oh so you can lol
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post #9 of 17
Some Ati cards can have the voltage adjusted when using Ati Tool
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post #10 of 17
There's also bins and revisions. Processors (GPUs, CPUs, ect) are produced on large wafers in batches. The ones near the center of the wafer tend to be slightly better. Also, the process of making the wafers themselves are tweaked for better results. Binning is testing and placing the better processors in a "bin". For example, the 8800GTX and GTS use the same GPU but the GTX has better quality G80s processors. Even within these bins, there are differences which give different leeway for overclocking. The second major issue is revisions. As they get better at producing the processors, yields are improved and sometimes so is quality.
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