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Poor Temps w/ Prime95? - Page 3

post #21 of 29

Thx for the clarification re thuban.

 

I'm using HWmonitor on my sig-rig and it's reporting a mobo core(socket) temp of 31c at idle, while the FX-8350 Package temp in HWmonitor is fluctuating randomly between 9c and 14c (48f-56f,) which is obviously well below believable temps since my room is usually 70f year-round and I'm not using any form of refrigeration cooling, just an H60 AOI liquid system and a bunch of case fans.

 

I think the fluctuation may the evidence of the temp reporting algorithm's flaw @ low CPU temps. I've read about the 45c temp point, where the algorithm's accuracy tightens up, but at load on my system, there is still a 10c variation. Hardly trustable. Personally, I would not trust the lower number reported by the FX-8350 package in HWmonitor, IMHO.

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post #22 of 29
Thread Starter 
I don't think I've heard anyone mention this yet, but, is AMD Overdrive a good resource for monitoring core temps?
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post #23 of 29
Thread Starter 
After running a full prime test (75% ram, all cores) for 2 hours, my socket temps hovered in the upper 60's and core temps in the upper 40's and prime reported no errors. This is with a 4.4GHz clock, 1600MHz ram, ever so slightly over stock voltage (now ~1.36, before ~1.35) and, generally, suggestions followed by this thread:
http://www.overclock.net/t/1348623/amd-bulldozer-and-piledriver-overclocking-guide-asus-motherboard
The socket temp does seem a little high to me...but I plan to get a 3rd chassis fan soon, so maybe that will help.
These settings should be my overclock for everyday use, although I have not done anything to my graphics card, yet.

Any questions, comments, concerns, or snide remarks?
Edited by Chelate - 8/30/13 at 8:30pm
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post #24 of 29
In the end guys don't worry about misread temps. All modern CPUs have built in overheat protection, your rig will just shut off if it gets too toasty. smile.gif
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post #25 of 29
Quote:
Originally Posted by CptDanko View Post

In the end guys don't worry about misread temps. All modern CPUs have built in overheat protection, your rig will just shut off if it gets too toasty. smile.gif
That's as a last resort. People worry about temps as high temps not only brings instability but also degradation if exposed too high temps for a prolonged or extended period of time.
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post #26 of 29
Quote:
Originally Posted by jason387 View Post

That's as a last resort. People worry about temps as high temps not only brings instability but also degradation if exposed too high temps for a prolonged or extended period of time.

I know that already.....

BUT considering a silicon chip can last hudreds of years theorehtically then a little more voltage and heat draining its life span to say what 10 20 years is negligible considering the chip will be obsolete by then
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post #27 of 29

Electro migration will wear out a chip faster than you think, especially when heat is high on the chip over long periods of time, and especially overclocked.

 

 

 

 

 

"By eliminating the possible, only the impossible can occur" - Anon

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post #28 of 29
Since it is not always apparent whether a particular program is showing the "CPU Core" or "CPU Socket" temperature I compared several programs find out. Here is what I have concluded:

These show CPU Core Temperature:
HWMonitor: AMD FX-8350 Package Temperature
Angus Monitor: Core 1-8
Core Temp: CPU Temp

These show CPU Socket Temperature
HWMonitor: TMPIN2
Angus Monitor: CPU Socket
EasyTune6: CPU

I ran some tests with my FX8350. I used Angus Monitor so I could monitor and graph both the Core and Socket temperatures. I was surprised to see that the Socket temperatures was 12C higher than the Core temperatures whether I was at idle or at full load. I had expected them to be a lot closer at full load.

Idle:
CPU 1409MHz 0.9125V
CPU Core Temperature: 12C
CPU Socket Temperature: 24C

Load (using Prime95):
CPU 4206MHz @1.4125V
CPU Core Temperature: 54C
CPU Socket Temperature: 66C
post #29 of 29

Socket temps may be specific to the motherboard. For instance on my Asus CFV, in HWmonitor my TMPIN2 constantly reads 128c(262f) - a ridiculously high temp that never ever varies so for me it's a bunk number. HWmonitor will correctly display the CPU socket temp as "CPU" for my board.

 

Temps on my sig-rig below;

 

At idle 30c

 

Loaded 55c

 

@4.6+/-ghz manual OC turbo off

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