On the rig in the sig, I have run as high as 2.96 volts to my 2 x 512MB BH-5 for gaming (on a regular basis) I run 2-2-2-11 timing in dual channel, with interface enabled and 1:1 timings all the way to 221 x 11 on a stock board and BIOS.
On a moded board, I ran the same setup at 225 x 11 at 3.1 volts to the RAM for seven months. I pulled than RAM and am still using it on another rig.