rac on cpu's ?


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Message boards : Number crunching : rac on cpu's ?

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Profile Eve - Pyro nl
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Netherlands
Message 1284601 - Posted: 16 Sep 2012, 21:14:02 UTC

hello

im settingup a new pc and wondering what the cpu's would give towards the rac

wondering about these 3 cpu's

i5 3550

i7 3770K

i7 3930k


the new pc will have a msi gtx 680 4gb on a msi z77 board and atleast 16 gb mem, mayby 32 but that might be overkill. to feed it al im thinking about the coolermaster 1050 watt

another question :)

i have a amd 955be with 650 watt supply and have had it with msi gtx 560 ti hawk in slimode but was abit unstable, could that be the powersupply beeing tosmal ? card's ask about 170 watt each
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Horacio
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Argentina
Message 1284616 - Posted: 16 Sep 2012, 21:41:39 UTC - in response to Message 1284601.

AFAIK the i7 3930K wont work on a motherboars with the z77 chipset...

The I7 3770K is better than any I5 because it has Hiperthreading and use faster clocks, but the difference on performance of the CPU for crunching with SETI or any other BOINC project might not be worth the price as the HT techonology doesnt doubles the performance... Having 8 cores you will be able to crunch on 5 or 6 of them getting about the same throughput as if you were having an i5 and you will still have another 2 or 3 free cores to do other things on your host... (YMMV)

2 560Tis on a 650W is definetely on the limit of what the PSU can deal, specially if the PSU its not new and/or if its not a very good one, but what really matters is the power supplied in the 12V rail/s you need 340 Wats just for the GPUs plus something else for the disks, DVD and also you should have some headroom... so your PSU should be able to give 400W (around 33 Ampers) of those 650 total wats just on the 12V...
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Profile Eve - Pyro nl
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Message 1284711 - Posted: 17 Sep 2012, 6:02:06 UTC

ok thx

yeah the 3930 would have to go on another socketboard. its a exspensive1 so proberly not worth it, cost asmuch as the 680 card

the i7 3770 goes for around 310 here and the i5 3550 for about 195

the 650 watt supply is from coolermaster and is from when win7 was launched so a few years ago, gona buy a bigger1 now so that i can setup sli
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Message boards : Number crunching : rac on cpu's ?

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