my BH-5 sticks usually run at around 2.78v
any higher yeilds no difference in oc potential
i even tryed all the way up to 3.2 and it would fail memtest86+ within a few seconds at 230mhz 2-2-2-6 (and all other timings)
i also have a stick of corsair pc3200 with CH-5 chips on it
but i think the memory is defective, as i can't boot my system with it
all i get is a beep, even after clearing the bios
i even tryed booting up with things set to 133mhz, low timings, high voltage and it wouldn't post
i personally like the new hynix chips better now just cause they are hitting such high frequencies (like most pc44000 modules have) but i do wish they would handle atleast 2-3-3-6 timings at their max speed