EVGA GTX 970 SC ACX 2.0 What is your best overclock?

[Brian Blair]

My question is for other EVGA 970 ACX 2.0 owners, What is the best stable overclock you have gotten? I am thinking about overclocking mine, And I want a idea to estimate a safe oc.

 

[10tacle]

I have SLI of the SSC ACX 2.0+ variant (model ends in 3975) which is newer and has tweaked internals for better overclocking. Your mileage may vary if you have one of the older ACX 2.0 models. Without voltage adjustments, in Afterburner I have boosted up to 190MHz on the memory (for an effective 7810MHz memory speed) and 134MHz on the core, which yielded 1,324MHz and boost speeds of 1476MHz.

That is the highest I have gone on stock voltage successfully with no visible artifacts (dots, tearing on the screen, etc.). It puts the cards at 980 performance, which is good enough for me. I see no need to push them higher with more voltage, which I'm sure they will do successfully.