problem running 1T command rate

[Guest reg]

i cannot get my pc to run on dram 1T command rate. origionally i had a fatality an8 with same other devices. my mate has identical sytem down to the case, ram etc etc. so one by one we swapped every item except the motherboard of course still no 1T for me. it was inconvienient to swap power which is the only difference he has.so i tried another 550 watt suply and disconected most stuff, still no 1T.

so as i wanted anyway to try the rdx200 i finally decided to swap motherboards and bought this. darn it still no 1T command rate.same symptoms ,crashes on 1T by spd or manual 2.5,4,4,8 timings.1.75volts. but ok on 2T.except sisoft sandra new version crashes it.

one thing i have not tried swapping is the amd64 3500 as this also is inconvenient and the floppy/dvd rw`s. all other devices work on my friends pc running at 1T.

i have tried updating the bios drinking numerouse cups of tea and doing a lot of head scratching. Is their anything i can poke it with ?

[Guest thespin]

Isn't 1.75V vdimm way Low ? Check stock volts for your memory ...

[Guest Lucky]

What drive strenght are you using? Also what are your MAL and RP settings?

[Guest reg]

i have tried auto and mal 8 ,rp 5 , drive stength 7. corsair tested the ram at 1.75 v 2.5 ,4 ,4 ,8 ,1T

[Cordite]

It is either the RAM or CPU, can you try different memory in your system ?