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Windows 7: Odd processor temps


08 Oct 2009   #1

Windows 7 Ultimate x64
 
 
Odd processor temps

don't know if this is the right place to post--
there is no overclocking and cooling room like in vista forums

can the operating system itself place a burden on the processor to cause temps to run higher? might sound like an odd question, and i really don't know how to phrase it any better, but here's the scenario:

about 3 weeks ago, while still running vista (x64), i wanted to push my processor a tad bit higher. it is a phenom II x4 940 with a stock speed of 3 ghz running with a sunbeam core contact freezer, cpu fan control is off with the fan running at max all of the time. at stock speed, idle temps consistently stayed at 40c. i decided to pushed it to 3.3ghz and temps stayed at 43c-44c. i must say that at the time i decided to up the clock, outdoor temps in the southern california area were about 83f to 86f, with indoor temps where the computer is located, hovering a few degrees cooler (~80f).

since then, i've installed Windows 7 x64. outdoor temps for the past few days have been about 69f to 74f, with indoor temps pretty much consistently about 75f. after installation, i wanted up the clock on the proc again (i set it back to stock when i installed Windows 7), this time pushing it to 3.4ghz. well, my temps now--consistently--are at 36c.

i know ambient temps weigh into the equation, but does the actual operating system play a big part too?

My System SpecsSystem Spec
.

08 Oct 2009   #2

Windows 7 Ultimate x64
 
 

Are you certain that Windows 7 is not slowing the processor down when it's not in high use scenarios? That is my guess as to what is happening. I really don't see the point in setting the CPU at max "all of the time", when it usually only needs to be that fast here and there. Just let Windows control it.
My System SpecsSystem Spec
08 Oct 2009   #3

Win 8 Release candidate 8400
 
 

Quote   Quote: Originally Posted by mpcrsc562 View Post
don't know if this is the right place to post--
there is no overclocking and cooling room like in vista forums

can the operating system itself place a burden on the processor to cause temps to run higher? might sound like an odd question, and i really don't know how to phrase it any better, but here's the scenario:

about 3 weeks ago, while still running vista (x64), i wanted to push my processor a tad bit higher. it is a phenom II x4 940 with a stock speed of 3 ghz running with a sunbeam core contact freezer, cpu fan control is off with the fan running at max all of the time. at stock speed, idle temps consistently stayed at 40c. i decided to pushed it to 3.3ghz and temps stayed at 43c-44c. i must say that at the time i decided to up the clock, outdoor temps in the southern california area were about 83f to 86f, with indoor temps where the computer is located, hovering a few degrees cooler (~80f).

since then, i've installed Windows 7 x64. outdoor temps for the past few days have been about 69f to 74f, with indoor temps pretty much consistently about 75f. after installation, i wanted up the clock on the proc again (i set it back to stock when i installed Windows 7), this time pushing it to 3.4ghz. well, my temps now--consistently--are at 36c.

i know ambient temps weigh into the equation, but does the actual operating system play a big part too?
Absolutely, and power plan config, fan profile, and the usual suspects. Some 64bit win 7 install actually run much hotter than on vista because in the eairlier releases there were fewer profiles.

I wish my lapbrick ran at 36C. right now ambient is 64F and computer is under 45% load at 125F
My System SpecsSystem Spec
.


08 Oct 2009   #4

Windows 7 Ultimate x64
 
 

Quote   Quote: Originally Posted by pparks1 View Post
Are you certain that Windows 7 is not slowing the processor down when it's not in high use scenarios? That is my guess as to what is happening. I really don't see the point in setting the CPU at max "all of the time", when it usually only needs to be that fast here and there. Just let Windows control it.
well, i'm talking about idle temps. and the odd thing is that it seems to be running cooler with windows 7 than it did with vista.
My System SpecsSystem Spec
08 Oct 2009   #5

Windows 7 Ultimate x64 SP1
 
 

Quote   Quote: Originally Posted by zigzag3143 View Post
Quote   Quote: Originally Posted by mpcrsc562 View Post
don't know if this is the right place to post--
there is no overclocking and cooling room like in vista forums

can the operating system itself place a burden on the processor to cause temps to run higher? might sound like an odd question, and i really don't know how to phrase it any better, but here's the scenario:

about 3 weeks ago, while still running vista (x64), i wanted to push my processor a tad bit higher. it is a phenom II x4 940 with a stock speed of 3 ghz running with a sunbeam core contact freezer, cpu fan control is off with the fan running at max all of the time. at stock speed, idle temps consistently stayed at 40c. i decided to pushed it to 3.3ghz and temps stayed at 43c-44c. i must say that at the time i decided to up the clock, outdoor temps in the southern california area were about 83f to 86f, with indoor temps where the computer is located, hovering a few degrees cooler (~80f).

since then, i've installed Windows 7 x64. outdoor temps for the past few days have been about 69f to 74f, with indoor temps pretty much consistently about 75f. after installation, i wanted up the clock on the proc again (i set it back to stock when i installed Windows 7), this time pushing it to 3.4ghz. well, my temps now--consistently--are at 36c.

i know ambient temps weigh into the equation, but does the actual operating system play a big part too?
Absolutely, and power plan config, fan profile, and the usual suspects. Some 64bit win 7 install actually run much hotter than on vista because in the eairlier releases there were fewer profiles.

I wish my lapbrick ran at 36C. right now ambient is 64F and computer is under 45% load at 125F
Zig is on the right path, with a lot of the new power profiles and Windows 7 new power plans the os can control the newer "Greener" chips to use less power causing them to be cooler, which always brings this question to mind and why I had to leave selling computers do you really need a 3ghz chip to browse the web?? let the OS move it down to 600mhz when you dont need it then ramp up when you do. Ok I think im done.
My System SpecsSystem Spec
08 Oct 2009   #6

Windows 7 Ultimate x64
 
 

Quote   Quote: Originally Posted by DarkXeno View Post
Zig is on the right path, with a lot of the new power profiles and Windows 7 new power plans the os can control the newer "Greener" chips to use less power causing them to be cooler, which always brings this question to mind and why I had to leave selling computers do you really need a 3ghz chip to browse the web?? let the OS move it down to 600mhz when you dont need it then ramp up when you do. Ok I think im done.
i hear ya... as far as my power config, i have it set to high performance--i have never let the os or the bios do any power saving features. just me. it's just odd that one operating system shows a consistent lower idle processor temp over the other.
My System SpecsSystem Spec
08 Oct 2009   #7

Windows 7 Ultimate x64 SP1
 
 

It all would have to due with everything running in the background. less services means less heat.
My System SpecsSystem Spec
08 Oct 2009   #8

 

Software derived temp readings are one-off anyway. You may be looking at a difference in calculation.

I could only place confidence in the differences as measured by an analog device measured and monitored outside of the dual booted OS's.
My System SpecsSystem Spec
08 Oct 2009   #9
whs
Microsoft MVP

Vista, Windows7, Mint Mate, Zorin, Windows 8
 
 

Temperature readings are anyhow not an exact science - especially on AMDs. Try Core Temp, that will at least take the reading direct from the CPU Diode rather than the mobo sensor. Core Temp
My System SpecsSystem Spec
08 Oct 2009   #10

Windows 7 Ultimate x64
 
 

i'm using core temp and the amd overdrive utility, which they both show the same temps.
My System SpecsSystem Spec
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 Odd processor temps




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