overclocking my twinmos BH5

[omrit]

Hello,
I have a pair of 512MB "twinmos speed premium 3500" with BH5 chips.
I started to overclock, I got the HTT-232 stable at 3V with stock timings (2.5-4-4-9 I think). when I try to go to 233, I get errors from "memtest+", I raised the ram voltage to 3.1, didn't help... raised it to 3.2 and it still gets errors at 233. I tried to tighten the timings to 2-2-2-5 and it's still stable at 232 with 3V, but I can't take the HTT any further... :confused:
I have a DFI Lanparty Ultra-D board. CPU stable at HTT285*9=2565MHZ
I would appreciate some help!!! I know that BH5 chips can go much further at these volt's. :(
Thanks.

[Sh0r_ty]

try and if its unstable then up the voltage. once u get above 3.2 i would put some active cooling blowing over the dimms. with a fan over them u can push the vdimm to around 3.6 before u will hit anything thats a problem

also u can never gaurentee that any ram bh-5 tccd will hit high speed. 232 with 2-2-2-5 isn't that bad and many of the twinmos do max out around there