may have found OC problem
There seem to be quite a few people having problems switching off 1:1 on the IC7 with the winbond CH5 chips... even at much lower clock frequencies. I'm hoping that is my problem as I'm completely stable at 220FSB, Memory 1:1/2.7v, 2-3-3-7 and CPU at 1.55v but I can not even boot at 225FSB, Memory 3:2/2.7v (300DDR) 2.5-3-3-7 and CPU at 1.7v. I'll test 225FSB at 1:1 tonight to see if it works. BTW 225FSB was doable at 3:2 when I had the Corsair PC3200/HyperX 3000 mix but I never ran it through prime.
Eric
Re: may have found OC problem
Quote:
Originally posted by ewitte
There seem to be quite a few people having problems switching off 1:1 on the IC7 with the winbond CH5 chips... even at much lower clock frequencies. I'm hoping that is my problem as I'm completely stable at 220FSB, Memory 1:1/2.7v, 2-3-3-7 and CPU at 1.55v but I can not even boot at 225FSB, Memory 3:2/2.7v (300DDR) 2.5-3-3-7 and CPU at 1.7v. I'll test 225FSB at 1:1 tonight to see if it works. BTW 225FSB was doable at 3:2 when I had the Corsair PC3200/HyperX 3000 mix but I never ran it through prime.
Eric
Here is what happend with the 1.3 bios. I can run sucessfully at 5:4 up until about 250FSB. However it is not Prime stable until after I jump all the way back to 230FSB. Everything else seems fine. Its basically the same problem I had before but I can run 5:4 now. Changing the voltage or lowering memory speed does not get me stable past 230FSB (up from 220 on 1.5) without Prime errors.
Running at the lower ram speeds I've only lost 100-200MB/s on the Sandra scores as it is more efficient. I'm getting about 86% efficiency now instead of about 75%. I think after the CH5 problems are resolved in a future BIOS I should be able to handle at least 250FSB. I'm back at stock for now until I re-install XP on the raptor that is coming in tonight.
Eric