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View Full Version : i7 920 running cooler at 3.33 GHZ than at 2.66 GHz


D
03-30-2009, 02:54 PM
Very interesting. At 2.66 GHz, which is this processor's base frequency, I run about 109 F - 114 F. At 3.33 GHz, I'm sitting rock steady at about 103 F.

This is on air, with the stock HSF.

Last night I also turned both exhaust fans down to their lowest settings, so airflow through the case is actually lower. The only thing I am thinking is that the higher fan speeds were creating turbulence, and decreasing cooling efficiency.
paulwr
03-30-2009, 04:55 PM
I'd be thinking the same thing about airflow. Not often is a heating solution solved by flowing less air. I'm curious if the lower speed fans do bring it down at the lower GHz speed.

-Paul
D
03-30-2009, 05:42 PM
Indeed they do. It's still curious that the processor isn't running any hotter at the higher clock speed.
TAFKAT
03-30-2009, 06:07 PM
What apps are you using to monitor the temps ?
D
03-30-2009, 06:26 PM
I'm using the ASUS supplied PC Probe applet.

It's now rock steady at 106 F running at stock settings. After installing the UAD-2, it didn't want to boot at the accelerated settings. I might try bumping it up again later.
TAFKAT
03-30-2009, 08:09 PM
Hey Bill,

Out of interest , what do RealTemp (http://www.techpowerup.com/realtemp/) and CoreTemp (http://www.alcpu.com/CoreTemp/) report ?

In the past the ASUS utilities sometimes had a mind of their own in regards to reporting temps :-)
D
03-30-2009, 10:48 PM
I'm pretty hosed right now, but I've downloaded both apps and will do some testing later.

Cheers.

Bill
D
04-01-2009, 09:22 AM
Hey Bill,

Out of interest , what do RealTemp (http://www.techpowerup.com/realtemp/) and CoreTemp (http://www.alcpu.com/CoreTemp/) report ?

In the past the ASUS utilities sometimes had a mind of their own in regards to reporting temps :-)

The Asus Probe utility does indeed appear to have a mind of its' own. :rotfl:

Using CoreTemp (the F display has more precision than the C display), I am getting the temps about the same, with maybe a 2 degree difference from the standard clock vs the overclock. It's quite possible I could drop the temps by lowering the VCore slightly, since I see some people having success with that.

The Asus board seems to be overly aggressive in automatically pumping up the voltages beyond what they likely are required to be.