Youry's Blog

Youry's Blog

If you like overclock for i5-750 CPU

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If you like overclock for i5-750 CPU. I did it in the past and after BIOS upgrade forgot to do it again, but now I think it will be nice to get 3.3GHz again back instead of 1.66 Ghz.

In the past I found very good paper in Internet: http://www.legionhardware.com/articles_pages/intel_core_i5_750_overclocking_guide,2.html which I use now:


“When the processor is operating below these limits and the user’s workload demands additional performance, the processor frequency will dynamically increase by 133 MHz on short and regular intervals until the upper limit is met or the maximum possible upside for the number of active cores is reached. Conversely, when any of the limits are reached or exceeded, the processor frequency will automatically decrease by 133MHz until the processor is again operating within its limits.”

I’ve tried to use 200 BCLK and 100 PCIE with TurboMode – system crash until 180 BCLK, but when I removed Turbo – everything works now. Testing is going on now for Fedora 17.

To check CPU speed I found only one utility : /usr/sbin/./x86info -a

cpuinfo shows wrong information: cat /proc/cpuinfo

dmesg |grep MHz – can give this information as well.
lspci

sensors can give CPU temperature and Vcore  voltage.

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Written by youryblog

July 16, 2012 at 4:02 PM

Posted in HW, IT

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