The technical specifications for this machine are the following:

Motherboard:
MSI K9A2 Platinum / AMD 790 FX 4xPCI-E 16x
CPU:
9950 AMD Phenom X4 2.60Ghz, RAM 4Gb.
GPUs:
4x NVIDIA GTX 280
Power supply:
Thermaltake Toughpower 1500W, with 4 PCI-E 8-pin and 4 PCI-E 6 pin power cables.
Box:
Antec Gamer Twelve Hundred Ultimate Gamer Case. (Ours is a Silvestone but it is more expensive).
(The computer case is quite important. There are other available, but not all fit the purpose as you need to have enough cooling and free space after the 7th PCI slot to fit a dual slot graphics card as the GTX280.)

In the future (during 2009) we may be able to use multiple GPUs for one WU which will be rewarded higher.

New GTX290 cards should be coming out soon.

Wanna have it!
Even though it has an AMD CPU it looks really nice! ;)

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pixelicious.at - my little photoblog

You sure thats a Antec Gamer Twelve Hundred Ultimate Gamer Case ??? I've been looking at them and in fact bought 1 this morning for $119 Shipped and it sure doesn't look like whats in the picture ... ???

That things gotta run Hot with 4 280's Packed together like that ... 0_o

It is not, you are right. Ours is more expensive and fits two 750W power supplies. One burnt and we got the 1500W.

:)

4x NVIDIA GTX 280

Not having any machines with multiple cards, I wonder, does a 4 card machine produce 4x the credit of single card machine or is there some trade off involved?

4 times, maybe more from next year if we manage to use multiple cards at once.

gdf

I've been looking at them and in fact bought 1 this morning for $119 Shipped and it sure doesn't look like whats in the picture ... ???

Doh.. the 4 GPUs are missing in your case! ;)

MrS

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Scanning for our furry friends since Jan 2002

hahaha ... not for Long, I ordered 4 280's as Accessories ... ;)

4x NVIDIA GTX 280

Not having any machines with multiple cards, I wonder, does a 4 card machine produce 4x the credit of single card machine or is there some trade off involved?

Hi,
how long need a one GT280 card to finish one task?
how many of points per day is this card able to produce?

Im asking, because i think, that something is wrong with my 9800GT.
Every task is finished in cca 12hours.
thats too much no?
thanks ay lot for feedback - sorry for english :D
P.

how long need a one GT280 card to finish one task?
how many of points per day is this card able to produce?

Depending on the specific card, a GTX280 will produce something in the order of 13,000 credits per day or 4 WUs, each at about 6 hours each

Im asking, because i think, that something is wrong with my 9800GT.
Every task is finished in cca 12hours.
thats too much no?

No, that looks about right for a 9800GT

thats nice performance..
so if somebody have 4xGTX280 he got cca 52 000 ppd?
OMG - wooow.. i want it!!
But the electricity bill must be very interesting afterwards :-/
last question..if i take a look on that nice machine, i dont understand, how could be cooled these cards...? Because there is verry little space between every card, so how can works the cooling of every card in this configuration?
how looks temperatures under load?
ok, back to work, thanks for info.

ByE
PeeT.

With a 1500W PSU, are you consistantly pulling 1.5KW per hour?

Most likely not, but we have not measured it. On Linux, you would be consuming just the amount of 4 GPUs as the processor do nothing. I would say that each 280 should consume around 150W, so the total should be around 800-900W. Still quite a lot even if GPUs are 10 times more power efficient than CPU for the same flops.

gdf

We suggest a 1500W PSU.

I'm not an electric engineer, but I've seen enough share of posts all over the web claiming that the higher watt powered PSUs powering up your case, the better efficiency you'll get.

The same is true if you are plugged into 220V instead of 110V.

Internet myth? I'll only believe it if someone shows me the numbers and the tests can be scientifically duplicated elsewhere!

I'm not an electric engineer, but I've seen enough share of posts all over the web claiming that the higher watt powered PSUs powering up your case, the better efficiency you'll get.

The same is true if you are plugged into 220V instead of 110V.

Internet myth? I'll only believe it if someone shows me the numbers and the tests can be scientifically duplicated elsewhere!

That would depend on how the PSU is built. A cheap one usually is built cheply and not as efficeint. Some of the more expessive ones are more efficient. But more cost does not necessarily more more efficientcy. Another factor would be heat. Just as with CPUs, if the PSU is running cooler, it may be more efficient. A lot of what you hear may be true, but that would be on a case by case basis. Older PSU's are rated at about 65% efficient. Some new PSU's have a '80 plus' rating, but to get that they need to be that at 20%, 50% and 100% load. Size in Watts does not matter. A 1500W can have the same efficientcy as a 250W if it is built so.

Take a look here for some good information about power supplys. The bottom line is that PS usually have the best efficiency between 50 and 80% load, whereas below 20% gets ugly.

MrS

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Scanning for our furry friends since Jan 2002

So now that the GTX 295 is out. when are you upgrading this baby to 4 of them?

8 x GPU crunching must be tempting although i think you'd need your own power station.

So now that the GTX 295 is out. when are you upgrading this baby to 4 of them?

8 x GPU crunching must be tempting although i think you'd need your own power station.

I think they would wait for the GTX212. See this message thread.

4 GTX 295 would be awesome.. if only for the sake of it :D

Might want an i7 to keep them fed, though. And likely 2 separate power supplys, which would make the machine look less elegant. Or maybe a quality 1.2 kW unit could handle it..

MrS

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Scanning for our furry friends since Jan 2002