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Old 11-07-2012, 01:49 PM   #1
mrapathy
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Beware of Asus mobo's with EPU do not buy


if your planning to build a AMD system avoid Asus motherboards with EPU which last I looked AM3,AM3+,FM1,FM2 all have EPU which is Energy Processing Unit it controls cpu core voltage and fan speeds which cpufrequtils cannot access

epu so far only has windows drivers and control app.

when booting into bios or linux the system will runaway with cpu and motherboard heat hitting 40c for motherboard and 40+c for cpu. little worrysome for motherboard but not bad for cpu but in windows the motherboard and cpu will run 30-33c at rest and can be tweaked via epu to run lower or if one wants higher but cpu fan will go to high rpm and get noisy.
 
Old 11-07-2012, 03:08 PM   #2
TobiSGD
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Running Slackware 14 on an ASUS M5A99X EVO with a Phenom II X6 1055T (125W TDP), no problems at all. System operates in the same temperature range as on my Vista installation on the same machine.
 
Old 11-07-2012, 03:37 PM   #3
mrapathy
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I am using a Asus M4A88TD-V EVO/USB with Phenom II X4 955

I have tried previous version of slackware to 14,debian 6,6.0.4,6.0.5 all 64bit
all gave me same results as booting to bios or non windows environment
mobo and cpu 40c+ temperature.
using windows 7 64bit sp1 with no probs but I am sick of windows.

like encrypted hd and debian install sets that up nicely compared to slackware.

will give slackware 14 64bit a try though have a feeling it will be the same.

did you use the previous slackware version with any heat issues?

Last edited by mrapathy; 11-07-2012 at 03:38 PM.
 
Old 11-07-2012, 05:01 PM   #4
TobiSGD
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No, but I have a guess what is going on here. In the BIOS no power-management, like CPU frequency scaling, sleep modes, etc, are active. May it be that for some reason the power-management on your installs wasn't working correctly, for example frequency scaling set to userspace or performance governor?
 
Old 11-07-2012, 05:30 PM   #5
mrapathy
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power management on my installs was working
not sure what you mean about BIOS no power-management

had cpufrequtil set to ondemand and my 4 cores were running lowest speed they could but system heat was still high

Last edited by mrapathy; 11-07-2012 at 05:52 PM.
 
  


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