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eVGA 8800GTS
660/2200 stock cooling...while using XP.
Stock clock with Vista and waiting for a working program.
It's called a BIOS flash ! I did that while I used Vista (I'm now back on XP) and it worked great. I flashed back to my original BIOS now though since I'm on XP again and can overclock there via software. I've run my card at up to 620/2000, haven't tried further, though I think I will shortly .
but the GTS won't actually run at 330mhz; it will run @ either 621/1458mhz core/shader or 648/1512mhz core/shader...
say what?
Yep... There's a "range" of overclocks...
I don't take credit for this (stole it from XS forums) but...
So... if your core speed is between 509 and 524, your core speed is ACTUALLY 513, and the shader speed is ACTUALLY 1188... Not the number you set it to.
That's why I'm perfectly stable at 679, but going to 680 nets me MAJOR artifacting instantly... It looks like a small jump, but it's actually a huge jump for the core (from 675 to 684) and the shader too.
overclock in multiples of 27... so 648 is actually 648, 647 is actually 621g80's gpu clock generator/crystal works in certain incremements (it doesn't actually adjust 1mhz at a time).
for example when setting the clockspeed, if you set it to 615hmz or 630mhz, the ACTUAL clockspeed will be 621Mhz (and shader clock is 1458mhz).
not sure where the delta is off the top of my head, but around 635mhz it will jump to 648mhz (1512mhz shader). heh.. not sure i explained that well.. does that clarify it?
g80's gpu clock generator/crystal works in certain incremements (it doesn't actually adjust 1mhz at a time).
for example when setting the clockspeed, if you set it to 615hmz or 630mhz, the ACTUAL clockspeed will be 621Mhz (and shader clock is 1458mhz).
not sure where the delta is off the top of my head, but around 635mhz it will jump to 648mhz (1512mhz shader). heh.. not sure i explained that well.. does that clarify it?