XP 1600+ won't OC past 1533MHz

[FullOfSlack]

My XP 1600+ will run rock stable at 1533MHz with 1.85 core voltage. Now I did the volt mod on my AK31 rev3 and it won't go any faster even at 2.3 core. All I want is 1600MHz. It will boot into windows XP at 1.6 but then it will restart. My temp is only at 43C full load. Any suggestions?

[Placid]

You can try raising your memory voltage that might help.

[FullOfSlack]

Originally posted by Placid
You can try raising your memory voltage that might help.

It is a 2.7 allready. BTW All I'm shooting for is 12x133. For now

[FullOfSlack]

Would having not unlocked the chip right cause this? Or did I just get a bum chip that won't OC?

[bigfoot]

Are you using water cooling, air or water-either way, I personally dont think you should ever run a chip above 2.1volts, give or take .05, 2.3 is just deadly, i think you're stuck.

[FullOfSlack]

Originally posted by bigfoot
Are you using water cooling, air or water-either way, I personally dont think you should ever run a chip above 2.1volts, give or take .05, 2.3 is just deadly, i think you're stuck.

Just using air SK6 w/delta38. 2.3 just caused a reboot before windows loaded. But @ 2.1 windows loads and I can do stuff, just when I'm running SETI and then doing stuff it reboots.

[Placid]

If it was a unlocking problem it would probably do the same thing at another setting.
Test it by changing your fsb to 125x12 and see if it still has problems.

[FullOfSlack]

Ok I'll give that a try

[Placid]

If your system is fine at stock speed (133mhz) then it is probably a dud cpu if the unlocking thing is not the problem.

[FullOfSlack]

Originally posted by Placid
If your system is fine at stock speed (133mhz) then it is probably a dud cpu if the unlocking thing is not the problem.

The system is rock stable at 133x11.5 for 1533MHz. I just want 1600MHz and voltage seems to have no effect on stability.

[Placid]

Your cpu seems like a dud do you know the stepping?

[FullOfSlack]

Originally posted by Placid
Your cpu seems like a dud do you know the stepping?

I'll have to pull the HS off, then I'll post it. So I guess I'm looking for another chip then, as I won't be happy under 1.6GHz.

[FullOfSlack]

It might be heat related as I have opened my window (it's about 35F outside) and the core temp is at 45C and has been stable for now at 133x12.

[Placid]

Thats good :)

If your cpu is a agkga 1600 should be reachable if its a agkfa probably not.

Strange that 45c load would cause instability.

[FullOfSlack]

45C has been stable now for 20 minuets. maybe it needed to burn in a little.

[Arkaine23]

Seem that XP's are very temperature sensitive, and not super responsive to extra voltage. Just an observation from viewing similar threads...

[Overclocker550]

does the xp 1600 run at 1.4GHz? I would just get a new cpu, maybe an xp 1700 and try for 1.8GHz :) sell the old cpu on ebay, they pay alot :)

[ken257]

Is it cold where you are? Try ducting some outside air to your cpu and see if cold helps it. I used to have a 1.2 TBird (sold it, didnt fry it hehehe) that would not OC at all with any voltage. I thought I had a bum chip but when I froze the thing it ran 1584mhz stable with stock voltage, over 1.6 gig@2.05v. The air cooled 1.2 in my sig bellow doesn't respond so well to chilling but the more voltage I feed it the better it does. Bottom line is you have to play. 2 seemingly identical chips can be as different as night and day.