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CPU I7-2600k running slow

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October 18, 2012 1:34:13 AM

Hi,
My CPU is running too slow and I don't know why.
Testing my PC with Prime95 and SuperPI software, looking the performance with CPU-Z I got the following numbers:
Core Speed: 800 MHz
Multiplier: x8.0
Bus Speed: 100 MHz
Sometimes the multiplier goes from 8 to 35. 30% of the process stay en 16 and 68% in 8.
My hardware is:
Motherboard ASRock Z68 Extreme3 Gen3
Bios version 3.20
CPU Intel I7-2600k 3.4G 8M
Water Cooler Kuhler 620
RAM G.Skill Sniper 16 GB (4x4GB)
Graphic Card NVidia GeForce GTX 560 Ti 1GB
PSU Rosewill Hive 650w
Windows 7 Home Premium 64 bits
The PC is running in standard way, no overclocking.
In the Bios says the CPU is I7-2600k @3.4GHz running at 3500
I appreciate some help.
Regards,
Walter

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a c 109 à CPUs
October 18, 2012 1:40:04 AM

What are your temperatures while running Prime95 and SuperPI? It seems like your CPU is throttling to prevent overheating.
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October 18, 2012 1:58:05 AM

Acording to RealTemp 3.70 the four core are in 98 *C nd the Thermal Status show HOT for them.
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a b à CPUs
October 18, 2012 2:16:46 AM

probably a faulty chip, RMA it..
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October 18, 2012 2:19:25 AM

What? I don't understand.
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a b à CPUs
October 18, 2012 2:32:53 AM

The most likely cause is that your cooler isn't seated properly. I'd take it off, clean it, re-TIM it, and reseat it, making sure that it gets tightened down all the way.
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October 18, 2012 2:55:53 AM

Thank You very much, I will tryed to do that and I let you know.
Thanks for your soon answer.
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a c 109 à CPUs
October 18, 2012 3:42:34 AM

1depp1 said:
probably a faulty chip, RMA it..

No....definitely not a faulty chip.

cuecuemore said:
The most likely cause is that your cooler isn't seated properly. I'd take it off, clean it, re-TIM it, and reseat it, making sure that it gets tightened down all the way.


+1

@ OP

http://www.tomshardware.com/forum/338655-28-intel-stock...
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October 25, 2012 12:37:55 AM

cuecuemore said:
The most likely cause is that your cooler isn't seated properly. I'd take it off, clean it, re-TIM it, and reseat it, making sure that it gets tightened down all the way.


Hi,
You were right. The problem was that the cooler wasn't seated properly.
I had to clean, to buy a thermal paste and assembly the cooler again.
Now the tempertures are between 36 to 40 Cent Deg and I culd OC the CPU running 4.4 MHz
Thanks for yor quick answer, for help me and share your knowledgement.
Walter
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a c 186 à CPUs
October 25, 2012 1:22:48 AM

Don't overclock on the stock cooler.
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November 4, 2012 3:26:12 AM

Best answer selected by walpas1217.
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November 4, 2012 3:27:34 AM

mocchan said:
What are your temperatures while running Prime95 and SuperPI? It seems like your CPU is throttling to prevent overheating.

Thank You for your tip, and to all the Tom's Hardware community.
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