Register FAQ / Rules Forum Spy Search Today's Posts Mark Forums Read
Go Back   MacRumors Forums > Apple Applications > Mac Applications and Mac App Store

Reply
 
Thread Tools Search this Thread Display Modes
Old Feb 7, 2013, 01:47 AM   #1
ImperialForces
macrumors member
 
Join Date: Sep 2008
Location: Sure! Do you have a pen and paper? I'm in your moms house. I'll be waiting.
SETI@Home and CPU Life Expectancy

Hey guys,

I bought a new iMac this Christmas with a core i7, and have decided to install BOINC for running SETI@Home during idle times. I leave my computer idle for about 22 hours a day, and have set the max CPU usage allotted to BOINC at 40%. My question is, while using 40% of the CPU 22 hours per day, 365 days per year, how long will my CPU last?

Thanks for the input
__________________
Embrace the power of the dark side...
ImperialForces is offline   0 Reply With Quote
Old Feb 7, 2013, 02:00 AM   #2
OLDCODGER
macrumors 6502
 
Join Date: Jul 2011
Location: Lucky Country
Cannot answer your CPU question but, to be honest, I would be much more concerned about the power bill.
OLDCODGER is offline   1 Reply With Quote
Old Feb 7, 2013, 02:25 AM   #3
phoenixsan
macrumors 65816
 
phoenixsan's Avatar
 
Join Date: Oct 2012
Well....

I dont know about SETI, but in a old workplace of me, I used to run Folding at Home, that basically does the same as SETI (using idle power/time to run calculations) and the machine is still up and running. And that machine is a 2008 iMac. 24/7 on....so maybe this bit of info is helpful. And being honest, when still working there, I was more concerned by heat/fans in heavy summer days....


__________________
Mac Pro 2012 3.06 Westmere version, 12 Core 64 GB RAM, 4 TB , iPhone 5 (black), Moto G 8 GB (black)
phoenixsan is offline   0 Reply With Quote
Old Feb 7, 2013, 04:01 AM   #4
dusk007
macrumors 68030
 
Join Date: Dec 2009
The CPUs usually handle 4-5 years in server environment with constant load without issues. HDDs die much sooner than CPUs.

As long as the cooling is good there shouldn't be any problem with running it on 100% load all the time.

Check the cpu temps of the iMac. Usually desktops are easy to cool and run even under load in the 60C range. On a notebook which runs at full load at 75-80C things would be different.
As much as I once read about chip life expectancy. Heat is really the primary killer. Load doesn't really matter. It isn't mechanical that doesn't wear down from overuse.
__________________
15" MBP 2013 2.3/750M, 16GB/512GB
dusk007 is offline   0 Reply With Quote
Old Feb 7, 2013, 01:19 PM   #5
ImperialForces
Thread Starter
macrumors member
 
Join Date: Sep 2008
Location: Sure! Do you have a pen and paper? I'm in your moms house. I'll be waiting.
Quote:
Originally Posted by dusk007 View Post
The CPUs usually handle 4-5 years in server environment with constant load without issues. HDDs die much sooner than CPUs.

As long as the cooling is good there shouldn't be any problem with running it on 100% load all the time.

Check the cpu temps of the iMac. Usually desktops are easy to cool and run even under load in the 60C range. On a notebook which runs at full load at 75-80C things would be different.
As much as I once read about chip life expectancy. Heat is really the primary killer. Load doesn't really matter. It isn't mechanical that doesn't wear down from overuse.
Thanks, Dusk
__________________
Embrace the power of the dark side...
ImperialForces is offline   0 Reply With Quote
Old Feb 7, 2013, 01:25 PM   #6
Zerozal
macrumors 6502
 
Join Date: Apr 2009
Location: PA
I run the BOINC client at 60% load on my MP to support WorldCommunityGrid. It's been running 24/7 since I first purchased my system in June 2009, and still going strong.

Just make sure you have proper airflow around your hardware and you'll be fine.
__________________
2009 Mac Pro 2.93 Quad, 12GB RAM, 300GB Velociraptor, 2x 1TB WD Caviar Blacks in RAID 0, ATI 5870, 24" LED Cinema Display, iPhone 5, iPad Air
Zerozal is offline   0 Reply With Quote

Reply
MacRumors Forums > Apple Applications > Mac Applications and Mac App Store

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Similar Threads
thread Thread Starter Forum Replies Last Post
Reasonable life expectancy for HD? imanidiot Mac Peripherals 24 Jan 21, 2014 05:56 AM
Life expectancy of rMBP? M14762 MacBook Pro 12 Jan 11, 2014 09:43 AM
Life expectancy of RMBP and GPU question alandor MacBook Pro 6 Nov 26, 2013 06:07 AM
What's the life-expectancy of 680MX? Tanax iMac 10 Apr 3, 2013 04:09 PM
What is the life expectancy of a Mac kuntryklucker Mac Basics and Help 49 Mar 13, 2013 01:59 PM

Forum Jump

All times are GMT -5. The time now is 07:00 AM.

Mac Rumors | Mac | iPhone | iPhone Game Reviews | iPhone Apps

Mobile Version | Fixed | Fluid | Fluid HD
Copyright 2002-2013, MacRumors.com, LLC