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BIOS recognizes overclock but Windows/CPU-Z doesn't

Tags:
  • CPUs
  • Overclocking
Last response: in Overclocking
January 11, 2011 11:52:48 PM

Motherboard: Asus P5N-D
Processor: Intel Core 2 Quad Q6600 2.40Ghz
CPU Cooler: Arctic Cooling Freezer 7 Pro
RAM: 4GB Samsung DDR2 PC2-6400 400mhz
PSU: 800w Storm Super Silent Power Supply
GPU: Palit 1024mb GDDR5 GTX460
OS: Windows 7 Professional x64

I overclocked my Q6600 from 2.40Ghz to 3.6 Ghz, the BIOS on startup see's the overclock but as soon as I'm on windows it only shows my CPU speed as 2.40Ghz. I've used CPU-Z and AIDA64 to check and they both only say 2.40Ghz per core.

These are the settings I used for overclocking, I looked around and found this to be the most reliable looking. I haven't had any glitches or anything obviously bad, just that it isn't being seen when on the OS so I'm not sure if my CPU is running at those actuall speeds I've OC'd it to.

FSB: 1600
Linked
Sync Mode

Vcore = 1.55000V
DRAM = 1.850V
HT = 1.44V
NB = 1.48V
SB = 1.50V

Memory Timings: 5-5-5-12-2T

More about : bios recognizes overclock windows cpu

a c 243 K Overclocking
a c 139 à CPUs
January 12, 2011 3:00:27 AM

maybe turbo boost enabled & Intel EIST enabled..?
check in bios u must set Disabled all
January 12, 2011 3:20:50 AM

This processor doesn't have Turbo Boost. Only things that are enabled on the BIOS are Virtulization Technology and Disable Bit. The Enhanced C1 (CIE) is Disabled along with Speed Step Technology and Limit CPUID Max Value
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a c 243 K Overclocking
a c 139 à CPUs
January 12, 2011 5:26:11 AM

this setting your mobo :
Limit CPUID MaxVal: Disabled
Enhanced C1 (C1E): Disabled
CPU C State Capability: Disabled
Execute Disable Bit: Enabled
Virtualization Technology: Enabled
Enhanced Intel Speedstep Tech: Disabled

CPU Spread Spectrum: Disabled
PCIE Spread Spectrum: Disabled

CPU-Z & AIDA 64 is New Software ,... and the last option maybe u need Update Bios, Load bios default & upadate Bios!
January 12, 2011 5:40:41 AM

Already tried Flashing the BIOS, didn't work.

These are my settings

January 13, 2011 1:16:50 AM

henydiah said:
this setting your mobo :
Limit CPUID MaxVal: Disabled
Enhanced C1 (C1E): Disabled
CPU C State Capability: Disabled
Execute Disable Bit: Enabled
Virtualization Technology: Enabled
Enhanced Intel Speedstep Tech: Disabled

CPU Spread Spectrum: Disabled
PCIE Spread Spectrum: Disabled

CPU-Z & AIDA 64 is New Software ,... and the last option maybe u need Update Bios, Load bios default & upadate Bios!


All those settings are checked and still the same result on Windows/CPU-Z. I'll try restoring defaults then flashing the BIOS. Don't think I done that the first time i updated it.
a c 191 à CPUs
a b K Overclocking
January 13, 2011 1:47:30 AM

Post an image of the CPU tab page in CPU-Z.
a c 243 K Overclocking
a c 139 à CPUs
January 13, 2011 2:01:38 AM

hmm.. seem intel eist still enabled .. but i can wrong!
a c 191 à CPUs
a b K Overclocking
January 13, 2011 2:58:53 AM

If your overclock was successful I would have expected to see a Core Speed of 3600.0 MHz, Bus Speed of 400.0 MHz and a Rated FSB of 1600.0 MHz.

It may be that the 3.6 GHz overclock is just too aggressive (i.e. unsuccessful) and the system has reverted back to stock default settings.

Start with a less aggressive overclock like 3.0 GHz and see if the settings stick. If the settings stick then increment the FSB and try again. Keep doing this until you reach a point where the settings don't stick which means you have found the maximum overclock that your system is able to handle and then choose an FSB that is just slightly lower than the maximum.
January 13, 2011 3:47:55 AM

I managed to get the CPU at 3.60 GHZ after a BIOS Update once I restored the default settings. But after a few minutes the PC shut down, I got a look at the CPU Temp before it did and it was sitting at 65 C so I'm guessing it must've went a bit higher and then forced shutdown due to the heat.

I've tried OC'ing to 3.20GHZ but I'm back at square one with it not OC'ing at all. Gonna restore the default settings and flash the BIOS again, this time with a lower OC.
January 13, 2011 4:10:47 AM

Overclocked again, back to 3.60 GHZ, everything so far is running fine, CPU Temp is staying between 43-50 C when I'm not running any intensive applications, and CPU-Z is recognizing all the settings. When I run a couple of more demanding app's CPU temp jumps from 50-59'ish. Suppose with such a large overclock on a Fan cooler that's ok, but so far so good and all is running fine.