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Windows 7: Dual boot, one OS getting hotter than the other

12 Dec 2012   #1

Windows 7 x64bit Home Premium
Dual boot, one OS getting hotter than the other

hi there, I hope this is the right session for this...
I am having a very curious issue here...

Motherboard is Z68X UD3H B3 rev 1.3

CPU: i5 2500K (sandy bridge)

1 Crucial 128 GB m4 2.5-Inch Solid State Drive SATA 6Gb/s (Lion 10.7.4 Hackingtosh)

8GB G.Skill DDR3 PC3-12800 1600MHz Ripjaw Series (9-9-9-24) Dual Channel

Lion is installed on the ssd drive and Windows is installed on a regular sata drive (WD green drive or something).

On the Lion side I get excellent temps reading even when I hit the cpu real hard for very long time.. (about 50 and 55 Celcius is the maximum I have gotten).. I am very happy with how the temps are behaving on my Lion side of things..
Here I am reading my temps with Istat.

But when I go to Windows 7 (Using Protools software) and I push the cpu to about 40 or 45% use (reading in task manager), I get a reading of about 70 - 75% and even 80 celcius (with HW monitor)..
The alarm in the motherboard is set to turn on when temps get to 70C and that's exactly what it does.. (That way I know HW monitor is reading the right temps)

Why is this happening, how come my cpu gets hotter on the Windows side of the fence??

Maybe there a setting in the Bios ??

I am using stock fan and connected via hdmi cable to my monitor

Thanks a lot people on this forum I hope I can get some help

My System SpecsSystem Spec

13 Dec 2012   #2

Windows 7 x64bit Home Premium

replys from other forums:

some people believe that something is preventing my fan to speed up when cpu is getting hotter!

what could this be?

My System SpecsSystem Spec

 Dual boot, one OS getting hotter than the other

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