I'm trying to find the number the clocks go into evenly for overclocks. Since I can set 800Mhz and EVGA and AIDA report if I remember correctly 797 or 798Mhz. I think the stock clock is 607Mhz so I need to find out what the correct steps are so I can dial in the correct clock for the overclock.

For instance the GTX 200 Series has 27Mhz clock stepping. So say I set 750Mhz it will just clock it to what it can produce by it's clock generator to 729Mhz. I figured out with tons of testing the ideal clock stepping is 27Mhz since 27Mhz goes into 729Mhz and 756Mhz. So the GTX 200 Series can only truly run at either 729Mhz or 756Mhz because 729 goes into 27, 27 times. The same applies to 756Mhz since 756 goes into 27, 28 times.

I can't quite find the ideal number on the GTX Fermi series or the 400 series in particular. Right now I'm running 835Mhz and EVGA and AIDA64 report it correctly at exactly 835Mhz.

So if any of your guys are good at math, you could find the number that evenly goes into 835 without any decimal points. It has to be an exact number. Like for instance I thought it was 12 or 13mhz but it seemed to change dynamically as the clock went up so I'm not sure at all.

I'll do some more testing to determine the exact number. I'll write to bios 840mhz, or 845mhz and find what number it actually reports since we're are calculating the stepping number the clock generator will produce. You can write any number to the bios but the Fermi Clock Generator will only produce what stepping is closest in it's Clock Generator Table.

Thanks

Edited by chris89 - 6/6/13 at 7:59pm

For instance the GTX 200 Series has 27Mhz clock stepping. So say I set 750Mhz it will just clock it to what it can produce by it's clock generator to 729Mhz. I figured out with tons of testing the ideal clock stepping is 27Mhz since 27Mhz goes into 729Mhz and 756Mhz. So the GTX 200 Series can only truly run at either 729Mhz or 756Mhz because 729 goes into 27, 27 times. The same applies to 756Mhz since 756 goes into 27, 28 times.

I can't quite find the ideal number on the GTX Fermi series or the 400 series in particular. Right now I'm running 835Mhz and EVGA and AIDA64 report it correctly at exactly 835Mhz.

So if any of your guys are good at math, you could find the number that evenly goes into 835 without any decimal points. It has to be an exact number. Like for instance I thought it was 12 or 13mhz but it seemed to change dynamically as the clock went up so I'm not sure at all.

I'll do some more testing to determine the exact number. I'll write to bios 840mhz, or 845mhz and find what number it actually reports since we're are calculating the stepping number the clock generator will produce. You can write any number to the bios but the Fermi Clock Generator will only produce what stepping is closest in it's Clock Generator Table.

Thanks

Edited by chris89 - 6/6/13 at 7:59pm