Cant get x2 3800 to 2.5ghz.

Jimbo · 10 May 2006 at 14:24

I am quite new at overclocking but following help from another member of these forums I have managed to get a small oc out of my cpu. Its set at the following at the moment:

overclock mode - cpu, pci Asynch
cpu volts - 1.350v
mem clock - 133mhz (ddr 266)
cpu nb link speed - 800mhz
cpu freq 220 mhz

It runs fine at that, but I cant get it stable at 240 or 250 HTT in the bios, I have tried upping the volts to 1.4v.. any ideas?

Jimbo · 10 May 2006 at 14:33

Hi mate Im using the latest 1.80 bios which is supposed to be a good overclocking bios. I just re enabled the 1T command in the bios so maybe this is causing probs too? it passed memtest for 30 mins and prime 95 / super pi though, although that was @ HTT 220.

The system is crashing though when I try a HTT of 240 or 250 even at 1.4v. Its rock stable on 220 HTT and defualt volts.

My cooling is a freezer 64 and it seems to be doing a good job, the most I have seen is 45c full load.

Jimbo · 10 May 2006 at 15:11

Cheers guys, I will try lowering the link speed to 600mhz, and maybe try disabling 1T too.

Jimbo · 10 May 2006 at 15:45

sablabra said:
Disable c&q, it won't let you increase volt then. 2.5ghz on stock volt isn't something you can expect to be stable... Even though mine is

Sorry but whats c&q?? I know 2.5ghz was prolly unrealistic at stock volts, but its still a no go at 1.4v so Im a bit dissapointed really.

Jimbo · 10 May 2006 at 16:26

Yeah I was told 800mhz if freq is under 250 and 600mhz if its over 250, I have treid both to no avail.

Jimbo · 10 May 2006 at 16:48

Its just called the cpu frequency (MHZ) on my board, and I change it from 200 which is the default for my board to 220 for a overclock of 200 mhz and thats fine on default volts.

Anyway I disabled cool and quiet (was anyway) set cpu freq at 250, put cpu nb link at 600mhz, put mem at 2T and cpu volts at 1.4v

Still I get a crash in prime 95 telling me a hardware failure occured and it aborts the torture test. This is followed by a blue screen crash, irq_less_nor_eqaul and something about NV4_mini.sys

Maybe my cpu is a bad overclocker and 200mhz is all im going to get out of it.

This is what I have at the mo...

Anything above this and it crashes.

Jimbo · 10 May 2006 at 17:12

I treid lowering the nb link speed to 600mhz mate. Thanks for the suggestion though.

Edit: oh sorry you said NB SB link speed.. thanks I'll try it.