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Does Boinc projects reduce cpu/gpu life cycles? - Page 2

post #11 of 33
Only component I have lost, is my old OCZ 700W PSU. RMAd it and it is now sitting in a box.
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post #12 of 33
Quote:
Originally Posted by Tex1954 View Post

That is why I try to use 2x or more PSU per max calculated load. That means I run the PSU at around 50% rated max... so far so good...
For instance, I have a 1050W PSU running one MB with the 6990... way overkill on the PSU...
biggrin.gif

a 2nd this!
    
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post #13 of 33
Quote:
Originally Posted by goodtobeking View Post

Only component I have lost, is my old OCZ 700W PSU. RMAd it and it is now sitting in a box.

That's the best place for an OCZ PSU to be in!
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post #14 of 33
Quote:
Originally Posted by one-shot View Post

That's the best place for an OCZ PSU to be in!

Well, I would agree if the 700W was placed in his SIG system and overclocked.

To see how close you are running, ya'll could do what I do and calc the high side PSU load. It was withing 10% on my SIG system overclocked and is a good tool. Even all the fans were added.

Go here and try it out and see if 700W or even 750W is large enough for a 50%-65% load factor. My real load according to Watt Meter is 734W total and I use a 1200W PSU for a 61% load factor. That is where the PSU's operate best and most efficient depending...

http://extreme.outervision.com/psucalculatorlite.jsp

It will give a recommended PSU size... I would add 20% to whatever it says the recommended PSU size is since I think it gives a value for 80% max load. That is what I did after a manual calc...

http://www.power-on.com/calculator.html

This one gives an idea of stock wattage used and it's close, but missing fans and things. Still, it gives the basics and you can manually add fans and pumps and such.



biggrin.gif
Edited by Tex1954 - 11/16/11 at 10:41am
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post #15 of 33
Here is the last PSU calc you will ever need. Even has a folding/boinc option that gives you the required headroom. Plus was made by the legendary Phaedrus2129 himself, with the help of FiX

EDIT: I had a HD5750 OCed at the time running Collatz I believe. Along with my I7 folding. My new 650 has yet to make a hiccup. Plus between the new PSU and new RAM, was OCZ RAM as well, I was able to get a better OC.
Edited by goodtobeking - 11/16/11 at 10:58am
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post #16 of 33
Quote:
Originally Posted by Gill.. View Post

Gill.. says, yes, it will smoke any and all hardware you have like you'll never believe. However, the euphoria you feel from doing a good thing, (no seriously) - is insurmountable...and to that, I say - "Bring it on"......you have to pay to play, yunguns....it isn't personal...it's just math...

nice to have you back man!
    
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post #17 of 33
Quote:
Originally Posted by goodtobeking View Post

Here is the last PSU calc you will ever need. Even has a folding/boinc option that gives you the required headroom. Plus was made by the legendary Phaedrus2129 himself, with the help of FiX
EDIT: I had a HD5750 OCed at the time running Collatz I believe. Along with my I7 folding. My new 650 has yet to make a hiccup. Plus between the new PSU and new RAM, was OCZ RAM as well, I was able to get a better OC.

Doesn't run under Linux, so have to wait to test it...

The ONLINE links I posted work for anyone with a java enabled web browser....

And, glad your system works well... still, for the Bronze/Silver/Gold rated power supplies to work most efficiently, they need to run 50%-65% range. I ADMIT it's just fine to run a PSU at 90% rated power provided the temperature derated PSU capabilities are not exceeded... especially lifetime warranted PSU's... (But who wants a meltdown and all the problems that could mean...)

biggrin.gif
Edited by Tex1954 - 11/16/11 at 1:11pm
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post #18 of 33
I had the same questions.

Is there any way to lower CPU usage in BOINC which is NOT related to CPU time? I have the feeling that switching constantly between 0% and 100% of CPU power is bad for the chipset (but maybe I'm wrong) ?

I don't want to use only one of my two processors either because even if the CPU temp is lower than when both processors are kicking, one of them is still working at 100% and it may cause problems.

Why can't we just assign x% of the CPU power for BOINC, running constantly for all processors?
post #19 of 33
Check out tthrottle http://www.efmer.eu/boinc/
You can set a temp limit and that literally throttles the boinc tasks but in a constant way rather than cpu usage jumping up and down.
On my htpc, I have set boinc to use both my cores and 100% cpu time.
And then on Tthrottle I set the temp limit to 45*C. And don't worry if it almost throttles the cpu usage, it takes a few minutes for it to balance itself.
At first my cpu was at 48*C, then I set the temp limit to 45*C, it throttled all the way down to 10% and when the actual temperature dropped it started raising the cpu usage. works quite well if you ask me.
And you can set minimum cpu usage and maximum cpu usage also, so if you want it to run your projects at 50% cpu usage then set the maximum cpu usage to 50% and raise the temp limit so it will constantly run at 50%.
Experiment with it to see what works the best for you!
Edited by lagittaja - 3/2/12 at 3:54am
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post #20 of 33
That seems perfect but it's windows only. Do you know a similar thing for mac?
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