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Windows 7 Underclocking CPU?

Tags:
  • CPUs
  • Windows 7
  • Overclocking
Last response: in Overclocking
February 23, 2010 5:21:52 AM

Hello all, First my specs:

MOBO: P5E64 WS EVOLUTION
CPU: Intel Core 2 Quad Q9550 (normal speed: 2.83 GHz)

I'm having issues with an over clock I've had for awhile. When I boot everything seems fine, the prompt that comes up on system startup lists my cpu as 3.4 GHZ (2.83). Meaning I'm over clocking to 3.4.

However, when I get into Windows 7, Nothing else shows 3.4 (I've tried with windows props, cpu-z, etc.). Everything shows the standard speed of 2.83. My proc is a bit hot, idling around 40c, peaking at 70c, but I don't think this would be enough for the proc to be under clocking itself.

What I have tried:
- Looked in bios for something to disable that could be under-clocking my cpu like speed step. Haven't found anything...
- Looked in Windows Power settings and made sure it was set for performance mode (made sure that min/max settings for cpu were at 100%)
- Tried to install AI Suite (maybe I need this program or something?, dont see why I would), However this program doesn't work with windows 7.




An Aside: On Idle, my cpu temp registers 39-40C, but my cores register: 50,43,48,52, should their be this drastic of a difference between the core temps and the cpu temp?

Thank you.

More about : windows underclocking cpu

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a b K Overclocking
February 23, 2010 6:15:05 AM

You have to disable both C1E and EIST in order to turn off speed-step.
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February 23, 2010 7:31:21 AM

I have disabled C1E, but have not found EIST in the bios. Where can this option be located?

Thank you for your reply.
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Related resources
a b à CPUs
a b K Overclocking
February 23, 2010 7:35:08 AM

Try to search something like "Enhanced Intel speed step technology" or "speed step".
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a b K Overclocking
a b à CPUs
February 23, 2010 1:36:13 PM

Speed Step works by lowering the multiplier, it doesn't seem like that is what's happening to you.
333 x 8.5 = 2.83 stock clock
400 x 8.5 = 3.4 OC
400 x 6 = 2.4 Speedstep throttled clock

Try a different version of CPU-Z
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February 26, 2013 2:44:42 PM

same problem with mu q6600 i have 3ghz and C1E and EIST are both disabled but when on load CPU downclocks to 500mhz... it's impossible to play any games... anything..
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March 4, 2013 11:33:28 PM

This 3yr old post was just bumped out of nowhere, I just wanted to say thank you since I forgot to say it 3yr's ago.
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