Ok since I now or will soon have enough GTX295 cards to fill out all the slots in the EVGA motherboard(6), I figured I needed more power, So I found that the Thermaltake W0158RU Toughpower 650W drive bay video card psu would do as It has 54A @ 12v, more than enough for 2 more cards, or 6 total(12 gpu WU's and 4 cpu WU's). I may need a 20A circuit for this monster all by Itself(1500w+650w=2150w).

If I'm not mistaken 1500 Watt will trip your breaker, so yeah you will probably have to break it off on it's own. Wow....

I have a 20A breaker here, With a 15A breaker I expect You'd be right, My next place was built in 1996 and hopefully It has 20A service already, Hopefully I'll be able to get the place for Christmas too, Now that would be a fabulous Ho, Ho, Ho. Oh and I just won My 3rd GTX295, So now I have or will have 3 EVGA and 1 MSI GTX295 cards and 2 to go. I also intend to run Windows 7 Pro x64 on It, Of course the upgrade path is through Vista Business x64 sad to say, But thems the breaks. I'm also thinking of getting an aquarium chiller for My 100 gallon aquarium, Hey I like fish too.

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The T1 Trust, PRR T1 Class 4-4-4-4 #5550, 1 of America's First HST's

I have to draw the line somewhere in terms of finance. I am not on a big salary. + GT240s use only 75W.

I can look for a bigger PSU no problem.

There is a very desirable matching red theme to the components.

Big q tho: what's quicker for CUDA, 1GB GDDR3 ot 512 GDDR5?

its not necessarily the size. GDDR5 is about 4X faster than GDDR3. So even though the GDDR5 card only has 512MB of ram it more than likely a faster card

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In a rich man's house there is no place to spit but his face.
Diogenes Of Sinope

Ok, for a bit more headroom:

http://www.ebuyer.com/product/152604

Nice.

I have to draw the line somewhere in terms of finance. I am not on a big salary. + GT240s use only 75W.

I can look for a bigger PSU no problem.

There is a very desirable matching red theme to the components.

Big q tho: what's quicker for CUDA, 1GB GDDR3 ot 512 GDDR5?

That would be "1" card that does the same or more work than 4 240s for the same price and uses the same or less wattage. It also negates the need for an expensive motherboard that supports 4 PCI Express 2.0 x16 video cards.

Money saved on the motherboard could be put towards an even more powerful video card, more memory, and a 64bit OS to run it all.

"I'm trying to spec up my ultimate machine. I would like 4 GPU ideally."

Why? I don't think you've really thought this through. Or are we playing fantasy computer build?

Are you trying to build the most powerful and efficient PC you can with a limited budget, or just want to impress your mates with a bunch of hardware?

I have to draw the line somewhere in terms of finance. I am not on a big salary. + GT240s use only 75W.

I can look for a bigger PSU no problem.

There is a very desirable matching red theme to the components.

Big q tho: what's quicker for CUDA, 1GB GDDR3 ot 512 GDDR5?

That would be "1" card that does the same or more work than 4 240s for the same price and uses the same or less wattage. It also negates the need for an expensive motherboard that supports 4 PCI Express 2.0 x16 video cards.

Money saved on the motherboard could be put towards an even more powerful video card, more memory, and a 64bit OS to run it all.

"I'm trying to spec up my ultimate machine. I would like 4 GPU ideally."

Why? I don't think you've really thought this through. Or are we playing fantasy computer build?

Are you trying to build the most powerful and efficient PC you can with a limited budget, or just want to impress your mates with a bunch of hardware?

8-12 gpus here.

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The T1 Trust, PRR T1 Class 4-4-4-4 #5550, 1 of America's First HST's

And your gpus aren't 240s either.

Now, before I build my ultimate rig, I'm going to get one of those Toshiba mini-nuclear power plants so I don't cause my neighbors to suffer brown outs and when Seti is down I can sell power to the grid.

Real soon now.

...

I'm going to get one of those Toshiba mini-nuclear power plants ....

LOL

One for me please too! :D

Helli

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A loooong time ago: First Credits after SETI@home Restart

And your gpus aren't 240s either.

Now, before I build my ultimate rig, I'm going to get one of those Toshiba mini-nuclear power plants so I don't cause my neighbors to suffer brown outs and when Seti is down I can sell power to the grid.

Real soon now.

Wait until the Nimbys show up... ;)

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The T1 Trust, PRR T1 Class 4-4-4-4 #5550, 1 of America's First HST's

That would be "1" card that does the same or more work than 4 240s for the same price and uses the same or less wattage. It also negates the need for an expensive motherboard that supports 4 PCI Express 2.0 x16 video cards.

Money saved on the motherboard could be put towards an even more powerful video card, more memory, and a 64bit OS to run it all.

Thanks Bill you've really put a spanner in the works ;)!

People go for multiple GPU so I wanted to try & do that within some sort of realistic budget or without an incredibly high elec bill...

This is my first potential self-build so I'm certainly thinking it through ;).

I will continue to ponder. Http://www.ebuyer.com/product/200700 is now possibly irrelevant lol!

Thanks Bill you've really put a spanner in the works ;)!

People go for multiple GPU so I wanted to try & do that within some sort of realistic budget or without an incredibly high elec bill...

This is my first potential self-build so I'm certainly thinking it through ;).

I will continue to ponder. Http://www.ebuyer.com/product/200700 is now possibly irrelevant lol!

I use a TYAN S2915 and an ASUS L1N64-SLI WS/B, both of which have 4 PCI-e x16 slots for my machines, and use 2x quadcore AMD opterons (2352 and 2356s) to get my 8 GT240s running; I got the MBs on eBay cheap, as well as the CPUs. They use ECC/reg. memory. You can also get the L1N64-SLI WS (which uses regular non-reg., non-ECC DDR2 memory), which uses either FX-7x or dual core Opterons (22xx) on eBay occasionally, and also has 4 PCI-e slots.
Each machine has 4GB of RAM, because SETI, at least, can run 8 CPU WUs and 4 GPU WUs simultaneously, even under Vista (well known memory hog) with no problems.

Good luck in your build!

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That would be "1" card that does the same or more work than 4 240s for the same price and uses the same or less wattage. It also negates the need for an expensive motherboard that supports 4 PCI Express 2.0 x16 video cards.

Money saved on the motherboard could be put towards an even more powerful video card, more memory, and a 64bit OS to run it all.

Thanks Bill you've really put a spanner in the works ;)!

People go for multiple GPU so I wanted to try & do that within some sort of realistic budget or without an incredibly high elec bill...

This is my first potential self-build so I'm certainly thinking it through ;).

I will continue to ponder. Http://www.ebuyer.com/product/200700 is now possibly irrelevant lol!

Yes, people go for multiple GPUs to get more production for the money, so figure cost against output, and for the same cost you can get more output with more powerful GPUs than the 240s.

Update:

Asrock X58 Deluxe3 Socket 1366 (4 PCIe)
Corsair 850W TX Series PSU
Kingston 6GB (3x2GB) 1600MHz XMP
2× MSI GTX 460 1GB GDDR5 (using slots 1 + 3 of the m/b thus both @ 16×)

According to nVidia's basic general bar chart of performance that's twice the GPU performance for the same price as 4 GT240s.

Sorry this thread's supposed to be about cooling isn't it...

Sorry this thread's supposed to be about cooling isn't it...

Well, it was when I started it.
But it's been fun!

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Sorry this thread's supposed to be about cooling isn't it...

Well, it was when I started it.
But it's been fun!

That's the main thing.
As a thread owner....
You can red-x to the mods if you don't like what is being posted in your thread if it is off topic.
But, as so many discussions on the Seti boards do, they sometimes drift far and wide from their starting point.
Glad you were OK with it.

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"Freedom is just Chaos, with better lighting." Alan Dean Foster

Update:

Asrock X58 Deluxe3 Socket 1366 (4 PCIe)
Corsair 850W TX Series PSU
Kingston 6GB (3x2GB) 1600MHz XMP
2× MSI GTX 460 1GB GDDR5 (using slots 1 + 3 of the m/b thus both @ 16×)

According to nVidia's basic general bar chart of performance that's twice the GPU performance for the same price as 4 GT240s.

Sorry this thread's supposed to be about cooling isn't it...

You might also consider

GIGABYTE GA-X58A-UD3R LGA 1366 Intel X58 SATA 6Gb/s USB 3.0 ATX Intel Motherboard.

I have the MSI N460GTX Hawk GeForce GTX 460 and it runs 10 degrees cooler than my Palit NE5X460HF1102 GeForce GTX 460 (Fermi) Sonic Platinum which is sitting below the MSi card on the same board.