Arch Linux

z1lt0id

Member

Registered: 2012-09-20

Posts: 177

cpu MHz stays the same even though I overclock Haswell under Linux

So I overclocked the i7 4770k to 4.6ghz through bios through the multiplier and it says 4.6 at bios  but if I do the follow command under Arch.

cat /proc/cpuinfo

It still shows the default clock speed

[c
model name	: Intel(R) Core(TM) i7-4770K CPU @ 3.50GHz
stepping	: 3
microcode	: 0x9
cpu MHz		: 3500.136

Is this correct or is my CPU not being overclocked?

INXI also shows the following

Clock Speeds: 1: 3500.136 MHz 2: 3500.410 MHz 3: 3500.273 MHz 4: 3500.00 MHz 5: 3502.460 MHz 6: 3503.417 MHz 7: 3501.093 MHz 8: 3500.00 MHz

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Nattgew

Member

Registered: 2013-10-09

Posts: 30

Re: cpu MHz stays the same even though I overclock Haswell under Linux

You should try the i7z utility, it has much better info for modern Intel processors.
Since you have a Haswell, you could also try i7z-git from the AUR for a better representation of the power levels.

graysky

Wiki Maintainer

From: :wq

Registered: 2008-12-01

Posts: 10,600

Website

Re: cpu MHz stays the same even though I overclock Haswell under Linux

/proc/cpuinfo is static based on the identifiers in the hardware.  +1 for i7z-git.

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