overclocking Nvidia GPU

So I'm running 2 GTX 760s in SLI, one is the reference blower cooler the other is the SC ACX, both 4GB from EVGA. I use EVGA precision to overclock the cards but a problem I'm running into is that I can't set the cards at different clock speed increases and my reference model has no problem with a 125Mhz core and 500 Mhz memory clock increase while my acx model crashes repeatedly when clocked that high (I had my reference card before getting the 2nd card, that's how I know). I've never done anything with hardware/bios overclocking and am wondering how I would go about setting them to different clockspeeds.
Hope my wall of text makes sense=]

sort of, however with sli you'd be running at the slowest clock speed. i dont think it's possible to have one card doing more work that the other, as they're technically running in parallel.
You could try swapping the power cables to see if its the psu perhaps causing the crashes?

They need to run at equal clockspeeds to stay syncronized. Your stability is only as strong as your weakest card. Nest way to do this is test each card for its max oc. Then when in SLI mode, set the oc to the lower mhz card each core and memory.

According to nvidia forums cards with different clock speeds can be sli'd just fine

Try using msi afterburner, works better with multiple cards.
http://event.msi.com/vga/afterburner/download.htm

Also unlock the voltage adjustment and increase the voltage by the max 12mv (nvidia caps the voltage increase to 12mv)

with a high asic quality, you can generally get a top clock speed of 1305MHz

Quote:

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Originally Posted by AOD_hugglesthemerciless

According to nvidia forums cards with different clock speeds can be sli'd just fine

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Well yes and no. It all depends on the situation.

Both cards can be set to different OC when...
-the game doesnt support SLI and only uses your primary card
-you use the secondary card to do the physx while the primary does the graphics

When in dual graphics mode sli then the clocks will drop to match the lowest card.


Your best setup is to make your primary card that clocks the highest. As mentioned before MSI afterburner is the best tweaking software.