Overclocking test with Prime95

chipachap · 7 Feb 2012 at 17:53

Hi everyone, I have been fiddling around with OC since i attached a new air/water cooler. I've been stress testing with Prime95 and monitoring with CPU-z and Open Hardware Monitor and although it runs for 2 hours with no problems.

What i am wondering is the cores seem to downclock to 4.1-4.2 from 4.6 for a lot of the test and then goes back up to 4.6 sometimes, is this the cpu downclocking because something is wrong or is that just the way it runs with Prime?

PaulyD · 8 Feb 2012 at 09:01

How hot is it running? The chip could be throttling due to heat. Realtemp or Coretemp would be best to tell you

Deception · 8 Feb 2012 at 09:09

If Intel speedstep is on, it normally goes down to 1.6ghz (or somewhere close). Quite strange its going down to 4.1ghz.

What temps are you getting with Prime?

gareth170 · 8 Feb 2012 at 10:05

sounds like you haven't upped the power limits.

Justintime · 8 Feb 2012 at 20:07

Exactly. You need to get off the stock power limits for your cpu or it will clock down.

chipachap · 11 Feb 2012 at 19:29

sorry for the late response i've been busy all week! It's only hitting 62 degrees at 4.6 Ghz, whether i have it at 1.275 or 1.375 it slows down a bit, when i have bf3 running it always stays at full clock speeds no problem. I left speedstep on as i don't need it going 4.6 Ghz for doing browsing and college work, would this be conflicting with Prime somehow? It hasn't BSOD'd on me or anything strange like that. It seems to like ~1.35 for 4.6 because i noticed it was slow starting up and increasing the voltage to 1.35 seemed to work well!.

Does anyone else's 2500k do this? Doesn't seem faulty to me :-/

Justintime · 12 Feb 2012 at 20:04

Sigh.. you likely have the correct answer to your problem in the two posts above you did you read them? What board do you have? You're likely still running stock 95w power limits which will have to be increased.