how to underclock a gtx 760 superclocked

thewtfguy

Honorable
Dec 12, 2012
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10,510
I bought the card recently but it was causing my system to crash, I thought it might be because my computer couldn't handle it or something. The computer turned on and I could do simple tasks just fine but games and hd videos in firefox made it crash. I took it to a local computer repair shop and the guy told me the factory overclock was a bit unstable and that I'd have to "underclock the gpu by 20 to 60" to get it working. So how do i do this?
my cpu is an i5 3330
and my psu is a cx600