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Running CPU at 100% for a long time (Rosetta@Home)

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#1 sjvirchow


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Posted 18 October 2011 - 11:58 PM

I'm participating in a distributed computing project called Rosetta@Home. It runs my CPU, and sometimes GPU at 100% in order to do it's research. (Hard to explain, refer to Rosetta@Home link.)

I'm running an AMD Phenom II X4 965 Black Edition with a Zalman CNPS 9700 CPU cooler, with Arctic Silver 5 thermal compound. My idle temp is 30 degrees (Celsius) and my full load temp is 53 degrees (Celsius)

My GPU is an AMD Radeon HD 5770 with 1GB of GDDR5 memory.

I'm using an Antec Basiq 550 Watt modular PSU.

I currently have 4GB of DDR2 memory installed on my motherboard.

Is running my CPU at 100% for long periods of time bad for it?

Edited by sjvirchow, 18 October 2011 - 11:58 PM.

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#2 killerx525


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Posted 19 October 2011 - 12:20 AM

I would say no, as long it keeps it's temperature cool.

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#3 Blaze413


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Posted 19 October 2011 - 05:55 AM

I'm with killerx it should be fine with those temps I would compare it to running a psu 24/7 I think it should be fine

#4 rotor123


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Posted 19 October 2011 - 01:57 PM

Several things come to mind.

Power usage by the CPU is affected by the % of usage. Thus 100% uses more power and can impact the electric bill.
Fan speed is controlled in most cases by heat and 100% use of the CPU will shorten fan life.
Power supply life may also be impacted.
Video card life can also be impacted. Those fans are not always easy to find and change.

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When running 24 hours a day you have AC fed to it and thus surges can get through and damage parts. Mine are off and Off switch on a power strip to disconnect the AC for that reason.

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