budget crunsher for 500€ with 2 gpu's?

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Message 18697 - Posted: 15 Sep 2010, 21:20:54 UTC - in response to Message 18696.  

It was a good idea. They are basically guaranteeing that their card clocks well, and with a dual fan it will run cooler, quieter and probably clock quite a bit higher too ;)
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Message 18698 - Posted: 15 Sep 2010, 21:59:54 UTC - in response to Message 18697.  
Last modified: 15 Sep 2010, 22:06:31 UTC

hmm it seems i need a new CPU Cooler... my cpu is currently throttled cause of heat, my cores are at around 65% avg load and 74,8°C accoridng to BonicTasks/TThrotle. (set a max of 75°C)

:-(

or cleaning the current one... think will look tomorrow for dust
and order pherhaps a new one... the temp seems me to high for only 65% avg load.

/me loves BoincTasks xD finally get it also to connect to my linux machine :)


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Message 18699 - Posted: 15 Sep 2010, 22:28:48 UTC - in response to Message 18698.  
Last modified: 15 Sep 2010, 22:29:08 UTC

Have you tried disabling "Smart Fan", or other features that would throttle down the fan. I run all my fans at 100% regardless of requirement, as I'm not bothered by the sound (anymore), & if everything runs 100% more air is moved so temps never get the chance to rise. If that's not the problem, try opening your windows, if your home is being heated by your PC(s), or removing the dust as you said yourself. If it's still not enough, try cleaning & then applying new thermal paste. But if what you want is a bigger CPU Cooler, it's usually only a requirement if you OC your CPU. It "could" also be a bad PC case, the lack of additional (optional) fans, or cable-mess within the PC case.
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Message 18701 - Posted: 15 Sep 2010, 22:55:47 UTC - in response to Message 18699.  

disable smart fan in BIOS seemed to help a bit, at least cpu's are at 70% avg with same WU's since restart, so a 5% gain before TThrottle hit :)

need to check dust and cables as you mentioned tomorrow, now i rlly need to go to bed, need to work in 6 hours :-/
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Message 18706 - Posted: 16 Sep 2010, 17:23:02 UTC - in response to Message 18701.  
Last modified: 16 Sep 2010, 17:24:17 UTC

ok.. i just saw (when building in a artic cpu cooler btw heat problem solved, ~50-55°C at full load xD)
that my mainboard of my main machine has 2 PCIe x16 slots xD

so i think i can run my 9800gt and the new orderd gtx460,
is there something i should consider when doing that ?
(beside the PSU)

can i do run both without problems or shoudn't i do that cause its so
different cards?
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Message 18707 - Posted: 16 Sep 2010, 18:53:53 UTC - in response to Message 18706.  

I don't think it will work.
Your GTX460 runs 6.11 apps and a 9800GT can only run 6.05 apps.
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Message 18708 - Posted: 16 Sep 2010, 19:34:56 UTC - in response to Message 18706.  

I inquired about the same once in this thread. Even if BOINC will detect your GPU's correctly, GPUGRID will see them as the GPU in the first PCIe slot or the one you've set your BIOS to be the default GPU & send WU's according to the two GPU's it's sees as the same type (even though they aren't).
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Message 18709 - Posted: 16 Sep 2010, 20:25:59 UTC

k will only replace the 9800 in this machine, seems its not worth the efford as long i can't bind projects to a specific gpu in boinc (would set SETI cuda to the 9800 cause that are WU which it can handle nicely.. pherhaps one day...)


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Message 18710 - Posted: 16 Sep 2010, 20:40:29 UTC - in response to Message 18709.  

ralle030583, I see you have so many failed WU's. Do you OC your GPU or CPU, run your RAM too fast, have high temps, use your PC while you run BOINC, or can it be the driver you use?
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Message 18711 - Posted: 16 Sep 2010, 20:52:04 UTC - in response to Message 18710.  
Last modified: 16 Sep 2010, 20:58:41 UTC

havent anything overclocked anymore. i tried it a bit with the gpu but reverted it cause thaught the failed task could be came from that.

things i did today to solve the prob:
0) had gpu overclocked a bit but resettet to default again
1) new cpu cooler + 1 new 120mm case fan , so CPU dont run hot anymore and gpu is also a bit cooler (and the best thing is, i dont hear the pc anymore at night cause the new fans are sooo quiet *happy*)
2) set cpu usage to 3 cores so one core is free for gpugrid
3) updated my driver today to latest beta drivers (just to try it)

current task is at 58%, i hope it get finished this time..

need to think how the tasks behave the next days.. but think its not worth the afford also.. cause the gtx460 should arrive tomorrow xD
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Message 18713 - Posted: 17 Sep 2010, 15:21:08 UTC - in response to Message 18711.  
Last modified: 17 Sep 2010, 15:24:45 UTC

the GT460 arrived and is build in,
im only dont understand the clock rates it shows..

NVIDEA Control Panel
Factory Settings:
Graphics clock: 405MHz
Memory Clock: 1800MHz
Prozzesor Clock: 810 MHz

are that settings rights???
on my GT9800 i had
Core: xyz
Memory: xyz
Shader: xyz
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Message 18714 - Posted: 17 Sep 2010, 18:21:22 UTC - in response to Message 18713.  

That is about half the speed it should be. I expect it was not running anything at the time (power save mode).
Use GPUZ to tell you what the speeds are when you are crunching.
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Message 18715 - Posted: 17 Sep 2010, 19:55:44 UTC - in response to Message 18714.  
Last modified: 17 Sep 2010, 19:57:36 UTC

oh thx you are right:




wondering that GPU is only at ~85% :-/ i want 100% xD
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Message 18717 - Posted: 17 Sep 2010, 22:50:06 UTC

All you really need for a budget GPU cruncher are as many CPU cores as GPUs and a strong and efficient PSU. Since it's going to run 24/7 (otherwise there's no use building it anyway) it's going to chew up quite some electricity. So you'll want a 80+ Gold unit. The Seasonic X-Series or Enermax Pro/Modu 87+ are very good PSUs. 700 - 800W should be fine for a dual GPU cruncher, as long as it's not dual chip cards (GTX295) or the ever-hungry GTX480. With GTX460 we're talking about ~150W each, probably a bit less than at at GPU-Grid. You don't need a 1 kW PSU for that, but you really want an efficient one. It will pay for itself during the life time of the rig.

And regarding the remaining components: if you're really on a budget you may want to get some used parts. All you really need are 2 cores of whatever speed and 2 PCIe Slots. The latter is not easy, so you'd probably need to buy a new motherboard even if you could get a used CPU. Anyway, take a look around your friends if someone is in upgrading mood. There's also Ebay but it's more risky. Also if the PC will live in a room without regular human presence it certainly doesn't need a case. Otherwise I'd want it to have a case due to noise and lack of electromagnetic shielding.

With used parts you might be able to hit that 200€ target. I recently upgraded my sisters PC for ~50€. It was a bit of a gamble and a bit of a pain to setup, though (PSU died, bitchy Asrock).

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Message boards : Number crunching : budget crunsher for 500€ with 2 gpu's?

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