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Successful overclock fails after a month

Posted: Mon Apr 30, 2007 3:50 pm
by aleph6
Something interesting happened yesterday. I was happily hacking along on my overclocked Bad Axe 2 when the keyboard stopped responding. That had never happened before. The mouse still moved the pointer, but nothing else worked. I bounced over to another system and tried to ping the Bad Axe -- no response. Sigh! Just as I was about to hit the reset button, I got keyboard back. Poked around and GAH! Disk errors are logging on the root filesystem. Oh, no, Mr Bill! Nothing worked -- couldn't shutdown, couldn't reboot, I could only hit the reset switch...... (queue dramatic music) After the system POSTed, I get the ever popular "The BIOS has detected a failed boot, enter Y... blah, blah, blah" My overclock was now failing. I messed around with it for a bit, but something had caused my month-long overclock to crap out. Oh well, I set things back to their non-overclocked settings and am happily cruising along with no problems that I can see, but this strikes me as fairly weird.

Back in business

Posted: Wed May 02, 2007 3:09 pm
by aleph6
Yesterday, I gave it another go. Bumping the CPU voltage one more click did the trick. Overclocked again, and I powered it off overnight and it fired right back up again this afternoon.

The specifics:

BIOS version 2692
Room temp is 26C, CPU at idle is 40C (heatsink fan is poking along at a nice quite 1200 rpm)

system BIOS settings:

FSB to 333: 8 x 333 = 2666
CPU voltage override: 1.350 (up two clicks from default)
Enhanced power slope: enabled
Memory frequency: 667
Memory timings: 5-5-5-12
Memory voltage: 1.92
MCH/ICH voltage override: 1.525 (up 1 click)
FSB voltage override: 1.25 (up 2 clicks)

Posted: Wed May 02, 2007 4:58 pm
by DMB2000uk
It seem ok now?

Did you orthos stability test the first overclock?

Dan

Seems okay

Posted: Thu May 03, 2007 3:09 pm
by aleph6
It seems okay now. I ran a number of tests after the first overclock: orthos for 4 hours, memtest86+ overnight, cpuburn (x2) for several hours. I'm mainly running Gentoo on this box. So it gets a pretty good workout. I've transcoded hours of video and it hasn't hiccuped once until that one time. When it did choke it was basically idle. I was web surfing.

Maybe tomorrow night I'll fire up something CPU intensive and let it run overnight.

Stoopid OverKlok!

Posted: Wed May 09, 2007 4:29 pm
by aleph6
My spelling isn't really that bad! Anyway. the C2D overclock is gone again! I give up. Clearly this system wants to run at a normal clock rate.