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How much can i push my video card with high ASIC index?

post #1 of 3
Thread Starter 
I have just learned about the ASIC index. It's 90 % on my Gigabyte GTX570 Super OC Windforce. So i have read that the higher the index, the higher i can overclock the video card. Well my GTX570 is already overclocked to 845 MHz from 732 MHz, which is sufficient for me.

I know that in order to equal the default GTX580, i would have to get my GTX570 core clock to 925 MHz, but could i possibly oc my GTX570 to 1 GHz?
post #2 of 3
Higher ASIC is loosely tied to OC'ing ability, but it's not the end-all, be-all by any stretch. Actually on Fermi having a card with a lower 'stock VID' is probably more closely tied to your overall max OC'ing ability than the ASIC (aka the voltage that the card runs at from the factory, when a 3d load is placed on it. On that card, .975V is the lower end, and 1.1V is higher end. Lower is better.)

I don't think that anyone has ever hit 1GHz on a 570, at least not w/o extreme cooling solutions like liquid nitrogen. Generally I think they tend to tap out at 850-900MHz on air for the most part. I don't think you have to OC a 570 all the way to 925MHz to match a 580 though. Probably more like 850-875 tops would be my guess.
    
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CPUMotherboardGraphicsRAM
xeon X5675 6-core @ 4.1ghz (1.29v, 20x205 +ht ) rampage iii extreme msi rx470 gaming X (the $159 budget king) 3 x 2gb corsair xms3 pc12800 (9-9-9-24-1T@1600MHz) 
Hard DriveOptical DriveCoolingOS
hynix 250gb ssd (boot), 2tb deskstar (apps),1tb... plextor px-712sa - still the best optical drive... corsair h8o v2 aio W10 home 
MonitorPowerCaseAudio
asus vw266h 25.5" (1920x1200) abs sl (enermax revolution) * single 70A rail 850w silverstone rv-03 XFi Titanium 
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post #3 of 3
My 570 also has a high ASIC index, and I tried overclocking it a few weeks ago. The highest stable I could get was 945MHz with 2300 memory at 1.038vcore. After that, it seems like I hit a wall, anything higher than that would instantly fail to run a DX game (no matter what the voltage was.) I did all of this on air with my trusty Palit Sonic Platinum. I would advise caution because the GTX 570s are known to have shoddy power delivery and overclocking too hard could easily result in trashing your card. The only reason I even considered going as high as I did is because my Palit has the power delivery of a 580 (like one or two EVGA cards) but it's a 570, and it looks like yours also has beefed up power delivery. I ran runs of Heaven followed by a good hour or two of BF3 to test stability, and I don't see why you shouldn't try and push your card.
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