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Question

Why is my CPU stuck at 802MHz?

by Zacharyr1337 / April 17, 2016 2:26 PM PDT

This is my first self built pc and I took great pride in it. It was working beautifully for 4 months and it over heated and I can not of the life of me get it back to it's former glory. The over heating happened about a month after I tried overclocking. I kept it simple. In EZ mode in the bios I turned on Game Boost and went on my way. I've tried reseating the liquid cooler and I even went out of my way of purchase a way too extravagant cooler and new pc tower which gave me more room to work with and more case fans. I've reset back to default settings in bios and updating mobo bios. I've been using prime95 and kombuster to stress test parts of my pc. The GPU is still working great. But the CPU stays at 802MHz. On rare occasions HWmonitor will say it speeds up to 3.5-4.4GHz. But since I've started using CPUz to compare I havn't noticed it. My hardware currently is (After new cooler):
MSI Z170A m5
Intel i-5 6600k
Noctua d15
MSI R9 390x
EVGA supernova 850 G2
2x4 GB RAM (if that matters)

My CPU does not get above 22 degrees C. In prime95. Please help. And thank you.

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All Answers

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Answer
Forum ate my homework.
by R. Proffitt Forum moderator / April 17, 2016 2:46 PM PDT

In short I see a Feb 2016 update with CPU Microcode support. That's code for "we added CPU support or fixed a bug in CPU support."

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Clarification
by Zacharyr1337 / April 17, 2016 4:52 PM PDT
In reply to: Forum ate my homework.

Yes when I updated the Motherboard bios I got the update with the CPU Microcode support. I was really hopefull this morning about this fix. But nothing has changed. Still the same results with the CPU 802MHz.

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So you have the Feb 2016 update?
by R. Proffitt Forum moderator / April 17, 2016 5:11 PM PDT
In reply to: Clarification

There was another discussion that ended with them discovering the socket was bad. Nothing to do but swap mainboards. Remember I always assume you tell all and didn't install any apps to control clock rates or fan speeds.

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Yes I have the Feb 2016 update.
by Zacharyr1337 / April 17, 2016 5:18 PM PDT

Okay so swapping the motherboard. Well I'll place the order tomorrow. If this fixes the problem I'll RMA the other board. I appreciate the help and I'll let you know how it goes. Also to answer your questions I am not using any apps to control clock rates or fan speeds. Everything is set to default in bios.

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I would pull it
by itsdigger / April 17, 2016 5:18 PM PDT
In reply to: Clarification

send the processor back to where you purchased it as faulty and get an exchange

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To be or not to be...
by Zacharyr1337 / April 17, 2016 6:44 PM PDT
In reply to: I would pull it

So it could be the socket or it could be the plug. Or so to speak... So if you have a moment to debate what would be your option in my situation. I really feel empty being computer-less. So sending off a part and waiting for the exchange is a little time consuming. When I can settle with the poor performance till a part comes in and after confirming the fix i can just return the other part since my whole pc is still under warrenty. Motherboard or CPU - To be or not to be...

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Well,
by itsdigger / April 18, 2016 8:39 AM PDT
In reply to: To be or not to be...

after reading This Article ,
I would have to agree with Bob since the processor is controlled by the MB now

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Answer
Problem solved!
by Zacharyr1337 / April 18, 2016 5:28 PM PDT

Turning off Intel Adaptive Thermal Monitoring in CPU features in bios fixed everything.

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