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-   -   Please explain behaviour of my CPU (http://www.hardwarecanucks.com/forum/cpus-motherboards/30590-please-explain-behaviour-my-cpu.html)

shaman44 April 3, 2010 09:24 AM

Please explain behaviour of my CPU
I purchased a ready made buiid of the core 17 920 on a Gigabyte X58 SLI motherboard with a GTX 270 OC. The i7 920 has, supposedly a core speed of 2.67 GHZ. I am at the moment installing a game. On checking CPUZ it is showing a speed of 1.559GHZ and fluctuating up to 2.67 GHZ in spurts. Is this normal? OR is there a setting in the motherboard BIOS that can have a steady speed.

Thanks for any help.

Arinoth April 3, 2010 09:33 AM


Its speedstep, it will down clock or slightly overclock your CPU based on usage (aka idling it will downclock to save power, when gaming using more cpu it will overclock it slightly)

mkultra April 3, 2010 09:36 AM

you can disable it in the bios if you want, but it's there to lower heat ouput and power comsumtion, since the voltage also goes down with the frequency

shaman44 April 3, 2010 09:57 AM

So what should a noob like me do? Will it hamper my gaming?

Also is it advisabable to overclock slightly with stock cooling?

Arinoth April 3, 2010 10:06 AM

You don't really have to do anything about it unless you notice it slows down your computer which it wont when you need it. The slight overclock that it does is still puts it well within save temperatures for the stock heat sink. Also, when you game is when it should kick in the little extra speed.

Zero82z April 3, 2010 11:28 AM


Originally Posted by shaman44 (Post 358368)
So what should a noob like me do? Will it hamper my gaming?

Also is it advisabable to overclock slightly with stock cooling?

1) Don't do anything. As soon as you put a load on the CPU, it will clock back up to full speed, and you won't have to worry about anything running slowly. Speedstep doesn't make any perceptible difference to performance.

2) No, it's not advisable to overclock with stock cooling. i7 CPUs produce a lot of heat, and the stock heatsink is designed only to keep the CPU cool at stock speed and voltage.

mkultra April 3, 2010 01:13 PM

like thay said it doesn't hurt performance, when you play a game or you load your cpu it will goes back to full power in a millisecond

0o0 April 3, 2010 02:26 PM

just ignore it, don't fix what's not broken. the best thing to do would be to do nothing, seriously.

shaman44 April 4, 2010 10:49 AM


I wish to install an after market heatsink to my i7 920. Does the installation of an after market involve removing the motherboard?

Also what brand is suitable and will fit in my Antec 300 case?

I have a i7 920 on a Evga X58 Board.

Will a first timer like be able to accomplish the task? :biggrin:

Zero82z April 4, 2010 02:00 PM

A good aftermarket heatsink will require removal of the motherboard. You shouldn't have any trouble with any of the popular high-end heatsinks in that case. And as long as you follow the instructions, it should go smoothly. You can always ask here if you need any more help.

A few coolers I suggest you take a look at: Coolermaster Hyper 212+, Cogage TRUE Spirit, Zalman CNPS10X Flex, Titan Fenrir, Gelid Tranquillo.

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