Corsair ram limiting AI7 / P4 2.4c o.c????

rsvrmille · 9 Mar 2006 at 08:23

Help guys i'm puzzled. i have the following,
P4 2.4c
abit AI7
Corsair TwinX 1024-4400C25, 4x512mb

i can clock the fsb for the cpu up to 260 no problem, but only on a 3:2 divider, northbridge is locked at 800, pci/agp 33/66.

if i try and go to 5:4 Then i struggle getting anything over 250 stable.
1:1 is just a joke. I thought this memory should be able to run275 fsb no problem? so why does it seem to be the limiting factor.

DDRv have tried 2.7, 2.8, 2.9, 2.95 and 3.0v all without success.
timings are 3-4-4-8 (so pretty lose?)

Any ideas? is it because the NB is locked?

rsvrmille · 9 Mar 2006 at 08:50

i'll try that tonight, thought of that this morning on the way to work but that will mean i have to sell the 4dimms and buy 2 1gb dimms, anyone want to buy some 512mb sticks?

rsvrmille · 10 Mar 2006 at 11:56

THANKS!

took the other two dimms out, running 2x512mb now and all stable at 240 FSB @1.575v with 1:1 and 2.5:4:4:8 @2.75v
temps, case 32, cpu35 pwm 48

onwards and upwards

rsvrmille · 10 Mar 2006 at 19:06

so far so good

running 245fsb now, had to up voltage to 1.65v for stablility. 250 and onwards, hope to reach 275. thanks for the info. might add the waterblock for the northbridge too...