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Super low temps

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September 16, 2011 8:42:06 PM

AMD Phenom II X4 840 (Propous) Stock Clock and stuff
Cooler Master RR-910-HTX3-G1 Heatsink and fan
GAMMA Classic Series ATX Mid Tower
evga Nvidia geforce gt 240

im getting temps with speedfan and core temp

General use, browsing internet, youtube, editing videos and pics.
Cpu: 16c
Gpu: 34c

Under heavy load, BFBC2, browsing internet, HD video and pic rendering, uploading, youtube. (not all at once or all the time lol)
Cpu: 30c max
Gpc: 60c max

More about : super low temps

September 16, 2011 8:45:30 PM

also in speed fan i set the cpu fan to 75% for sound reduction
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September 16, 2011 9:03:20 PM

even with p95 running full load for 1hr 35c max
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a b à CPUs
September 16, 2011 9:29:27 PM

And your question is....?

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a b à CPUs
September 16, 2011 9:32:55 PM

Ok either your room is under 60 F or your reading are somewhat OFF.
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a c 83 à CPUs
September 16, 2011 9:39:47 PM

Your point? You have an aftermarket cooler that can handle a tdp of 130W on a 95W rated part that is already known to run cool. I've got the same cooler on an Athlon II X4 640 and get almost identical temps, 17C idle and 38C load.
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September 16, 2011 9:55:43 PM

i was wondering if this was normal cause my room is 70f
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a b à CPUs
September 16, 2011 10:17:50 PM

normal or not it is nothing to complain about... Your temps are way below normal operating temps, as you indicated you knew because of the title of this thread.
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a b à CPUs
September 16, 2011 10:19:21 PM

Unless your PC is in a freezer, those temps. aren't right. ;) 

Your CPU temp. can't be below ambient room temp with air cooling.
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September 16, 2011 11:29:37 PM

but it is


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a b à CPUs
September 16, 2011 11:34:03 PM

Speedfan? Lolz..

Anyways.. what he says is true. There is literally no way you can have your CPU temp under ambient temp with air cooling. Just plain impossible.

Download and run coretemp to see your true temperatures.
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September 16, 2011 11:42:35 PM

here is pic from coretemp
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September 17, 2011 12:35:49 AM

I've got the same problem. I'm using three different temp monitors, HWMonitor, CoreTemp and Speed Fan. All display imposibly low CPU temps. 15c idle 30c load, ambient temp is 21c.

system specs

Athlon IIx2 260 (stock clock and cooler)
Gigabyte GA 880GMA-UD2H
Patriot G series Sector 5 2x2GB DDR3 1333
Seagate 500GB
XFX HD-5670
Corsair CX430 V2

I previously had a Phenom IIx4 955 BE on the same motherboard. Temps were in a normal range, Low 30s idle high 40s load.
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September 17, 2011 1:31:12 AM

wow that is crazy. even i gotta wonder, im currently awaiting a new coolermaster plus 212 heatpipe HS :-D
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a b à CPUs
September 17, 2011 7:48:54 AM

BIOS screen shot?
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a c 201 à CPUs
September 17, 2011 12:53:56 PM

Check your temps in BIOS, if that is reading it as below room temp either your motherboard has a bad temp chip, or the thermocouple on the chip is giving false readings, it may be an indication of something else being bad as well so you may need to RMA. I would check BIOS then give your motherboard maker a call.
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a c 207 à CPUs
September 17, 2011 1:06:12 PM

loneninja said:
Your point? You have an aftermarket cooler that can handle a tdp of 130W on a 95W rated part that is already known to run cool. I've got the same cooler on an Athlon II X4 640 and get almost identical temps, 17C idle and 38C load.


Point is the laws of thermodynamics are inviolate ...... 16C is below normal room temperature (16C = 60.8F / 17C = 62.6F)
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a c 103 à CPUs
September 17, 2011 6:24:35 PM

Core temps are rarely accurate on AMD CPUs my core temps currently read 7C
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September 18, 2011 3:35:49 AM

My temps under p95 load are 36c in core temp and speedfan

if you cant read the handheld temp reader it is 77degrees Fahrenheit



Edited so many times because of spelling errors
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a b à CPUs
September 18, 2011 7:40:49 PM

Farmer Paul said:
I've got the same problem. I'm using three different temp monitors, HWMonitor, CoreTemp and Speed Fan. All display imposibly low CPU temps. 15c idle 30c load, ambient temp is 21c.

system specs

Athlon IIx2 260 (stock clock and cooler)
Gigabyte GA 880GMA-UD2H
Patriot G series Sector 5 2x2GB DDR3 1333
Seagate 500GB
XFX HD-5670
Corsair CX430 V2

I previously had a Phenom IIx4 955 BE on the same motherboard. Temps were in a normal range, Low 30s idle high 40s load.


You can adjust the offset in Coretemp so temps reach normals :) 
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September 18, 2011 11:54:40 PM

correon said:
You can adjust the offset in Coretemp so temps reach normals :) 

I didn't know I could do that, Thanks! If I had bothered to read the Core Temp FAQs I would have known. I would have also read this;

"Why is the temperature of my Phenom based processor lower than the ambient temperature?
Starting with the Phenoms, AMD's digital sensor no longer reports an absolute temperature value anymore, but a reading with a certain offset, which is unknown. It is estimated that this offset is between 10 - 15c."

Explains alot dosn't it?
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September 19, 2011 5:44:43 AM

10-15C offset sounds about right. Your idle would then be about 27-32*C. That makes much more sense.
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!