Power for 4x5830

[BkkCoins]

I'm putting together a system with 4x Saphhire 5830, no case, hanging cards.

A simple question... when I hook up the GPU power cables do they draw 12V or 5V or both?
How many amps on each rail should I estimate when looking at the power supply?

Some I've seen spec'd have 12V 22A and some 12V 16A plus some 5V as well.
I'd like to make sure the one I choose has enough on the right rails, as well as Watt ratings.

Will most likely use 2 supplies hooked together as posted elsewhere here as then I have a bit more redundancy between multiple boards and backup units.

Thanks.

[checkmate]

I have four 5830 and I use the 1000W ps from Antec... it works fine and keeps cool.
No need for two supplies - get yourself some adapters and you're good to go.
Btw: I don't know about amps/watts/whatsoever, but a friend checked it for me and told me that it would work (and it does!).

Good luck.

[Blackout]

I am doing this same setup. What mobo did you use and did they all fir or did you use extenders and what was the total cast of your rig including the antec power supply mobo, cards and mem....?

Thanks

[Nilarium]

I am doing this same setup. What mobo did you use and did they all fir or did you use extenders and what was the total cast of your rig including the antec power supply mobo, cards and mem....?

Thanks

isnt it too late to make such setup

[sabe]

I use the Corsair TX950 with 2 molex <> PCI-E convertor and it works great. And cheap

[BkkCoins]

Does anybody have an answer to my question?

I won't use a 1000W single supply and I would like to be aware of what voltages the GPU cards mostly draw on.

[Blackout]

I am doing this same setup. What mobo did you use and did they all fir or did you use extenders and what was the total cast of your rig including the antec power supply mobo, cards and mem....?

Thanks

isnt it too late to make such setup

Not if you are getting most of the hardware or have most of it already.

I have one very large antec 1200 case that has 4 pce slots so I am working on getting three 5830s running in there...
I was going to do 4 but they would be spaced too close together and prob run too hot... currently I have a 4850 x2 and a 5830 extreme in there... if anything though this cases airflow is excellent even with 5 hard drives in there and 3 cards
temps are staying nice running at full steam....

so... that's not a big expense.  I might get a very good deal on a bunch of used 5850s and since I won't be able to fit more than
3 cards in my existing system that I actually use... I was wondering the cheapest route to get them going.

All flat out buying new rigs at this time might not be a great idea.. I'm pumping out between 750 to 1000 mhash
and only pulling in about .5 to 1 bitcoin a day....  but I find it fascinating.. so we'll see.

Plus I use the current system for HD video editing so the eyefinity comes in handy.