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i5 2500k idles at max frequency but drops to 800 Mhz under load - Page 2

post #11 of 14
Check to make sure the EIST is enabled in the BIOS, and then see if your Windows Power Plan is set to Balanced. If it is set to High Performance, then CPU-Z will show the full processor speed all the time. Change EIST to Enabled and the Power Plan to Balanced and you'll be back in business. Also check and see if C1E is Enabled, and if not enable that also.
post #12 of 14
Quote:
Originally Posted by smartAlex View Post

Excellent! I played around with the heatsink a little and got it to sit firmly for a while. Unfortunately, it won't stay seated for long. I don't know if the problem is with the MB or the stock heatsink, but one of the legs managed to wiggle loose again after about 20 minutes. Are Z75 boards or 2500k stock heatsinks known for having loose heatsink connections? Is there a way to tighten the connections up at all?

Anyway, temperatures are down in the low 30s celsius now. Should I even worry about Speedstep not kicking in, now that I seem to be at a reasonable temperature even at high frequencies (as long as the heatsink is actually seated correctly)? Also, should I trust CPU-Z's constant 3600 MHz frequency reading or RealTemp's ~2780 MHz reading?

Wait, were you doing a 4.0 ghz OC with stock cooler? Arent those stock coolers only rated to handle a CPU clocked at stock voltage/clock under load? Your temps look pretty high; to be honest id want to stay at 70C or under if you can? Have you considered saving a couple bucks and getting a cheap CPU Air cooler? (assuming you dont want to go AIO liquid cool)... a simple 25 dollar cooler will drop your temps by a lot compared to the stock fan.

In addition, you can buy better thermal paste, maybe that will drop your temps by a couple C? Speedstep drops you down to 1.6 (from what ive seen) with the i5-2500k, but dropping to 800 mhz sounds like news to me... haha

I just suggest buying a different alternative cooler, honestly youll spend 20-25 on a cooler, but save the life of your i5-2500k (which costs 219)
post #13 of 14
Quote:
Originally Posted by Lord Xeb View Post

I need to stop skimming tongue.gif

NP at least you're able to go through/filter a bunch of threads thumb.gif
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CPUMotherboardGraphicsRAM
Core i3 530 GA-P55M-UD2 XFX HD5770 2x2GB G.Skill RipJaws 1600mhz 
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150GB WD Velocity Raptor Windows 7 Ultimate x64 OEM Lian Li PC-60 
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post #14 of 14
Thread Starter 
Sorry for the wait!

The processor no longer overheats nor throttles down to 800 MHz, so that's fixed.

However, any thoughts on Speedstep not kicking in? It's enabled in my BIOS, but I'm still idling at 3.6 GHz. I'd like to avoid running at max all the time if possible.
EDIT: I was on balanced, but I checked the advanced plan settings and realized that minimum frequency was 100% anyway, so I set it to 50% and everything's fine! I'm running in the high-20s/low-30s now.

Thanks for all of the prompt replies biggrinsmiley.gif

Everything Fixed!
Edited by smartAlex - 3/30/13 at 6:03pm
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