I guess the RAM chips on my card suck. Bumped voltage up to 2.18v (tested with a multimeter) and couldn't get even a single MHz faster than I could with stock volts. Could not having cooling on the IC's regulating the memory voltage have something to do with it, or do my chips just suck at overclocking?

My core increased from 564 to 685 with 1.507v though (again tested with a multimeter).