2500K & P8P67-M Pro - Overclock dropping?

[rUmX]

So I was able to get my 2500K to 4.5ghz (45x). 1.38v. Running IBT after a few minutes the clock speed would drop back to stock (3.3ghz) and it would remain that way until I reboot.

Any ideas?

 

[rolling_tiger]

Have you tried disabling Turbo?

edit: I meant speed step. Try disabling that first.

 

[rUmX]

Are you sure? The Asus rep says to leave Speed Step on for better OC stability.

 

[rUmX]

I've been running Prime95 "Small FFTs" for the past 20 minutes and my clock speed didn't drop. Interesting...

 

[MrGuvernment]

speed step would only kick in when your not using the cpu %100.

when it drops, what is your CPU usage?

if your not using %100 of your cpu or like alot on one or 2 cores, the speed automatically drops to a slower speed, when you need more cpu, the speed goes back up.

 

[rUmX]

The cpu is maxed 100% during the test. I can't figure it out.

 

[rUmX]

Ok I dropped the multiplier to 44x (4.4ghz) and now the OC doesn't drop anymore. I guess I'll leave it at this since I don't want to go higher than 1.38v for 24/7.

 

[Lengradde]

Don't feel bad, mine capped out at 4.4ghz @ 1.368v.

 

[Falkentyne]

Did you check your temps?
Have you updated your BIOS?

That sounds either like throttling, a BIOS bug, or PROCHOT......

 

[rUmX]

Did you check your temps?
Have you updated your BIOS?

That sounds either like throttling, a BIOS bug, or PROCHOT......

Probably. I'm going to wait for a new BIOS before I draw any conclusions. There seems to be some throttling I assume. Based on the tests I have done, my 2500K @ 4.5ghz is giving me slightly SLOWER performance than my i5 750 @ 4ghz.

My temps are looking decent. Here is temps during SMP Folding.