I need about 1800 - 2000W PSU!!! 3x6990's!

Forum CPU & Components : Power Supplies, Cases & Mods I need about 1800 - 2000W PSU!!! 3x6990's!

here is the deal, i have 3x6990's with the overclocking switch ON, so as far as i know each of them will draw about 460W-480W 500*3=1500W right?

ram: 2x2GB ddr3 ram
CPU: 95W quad core athlon
MB: GA-990FXA-UD5
HDD:500GB hdd
dvd-r/w

these videocards are ment to be used up to 99%, all of them at once.

so based on my calculations i need 1800W PSU with six 8 pin 150W PCI Express® power connectors

i really need to find a psu

Reply to penihop

so? what do you need? you have a question? trying to show off? did you know 3 6990s would be bottlenecked by the PCI-e slot? did you know you have a piece of crap for CPU and all the 6990s add up together would perform worth than a 6870 paired with a good CPU?

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Reply to szbxa

Planning on using this for gaming? Bad news, the drivers only support upto 4 GPUs working together in parrallel, 3 6990s would be 6 GPUs so it wont work for a crossfire setup.

Also, a 6990 uses up to about 400W, so thats 1200W for the cards, that puts the system power consumption around 1300-1400W, the biggest power supply i know of is about 1600W BUT you would need to either be in a country running on 230V or give it a dedicated 20A breaker if you are in NA or it will blow the breaker every single time you try to boot up a game. 1400W at 90% efficiency is 1550W AC which is at the limit for a 15A breaker @ 110V, and i dont know of any platinum units of that size so you will be getting about 87% efficiency and pulling at least 1600W from the wall at full load, it wont be good for the breaker, nor will it be good for the wires in the wall.

Anyway, its a stupid idea and ill leave it at that.

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------------------------------ A man who knows how little he knows is well, a man who knows how much he knows is sick.
Single 12V rail or multiple 12V rails?
Reply to hunter315

A Quad core Athlon?

You might want to try selling a 6990 to get a way better CPU, your set-up is so im-balanced, bottleneck for sure.

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Reply to The Halo Don

let me guess, you are using this for bitcoin mining?

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Reply to Overclocked Toaster

AMD recommends a 1200 Watt power supply when using two Radeon HD 6990 graphics cards in CrossFireX mode. The power supply should have a +12 Volt continuous current rating of 88 Amps or greater.

The Corsair Professional Series Gold AX1200 with +12 Volt its continuous current rating of 100 Amps will work.

Reply to ko888

Aside from your processor and PCI issues, which there will be, you can just put in multiple PSUs. There's no reason for all the cards to be hooked up to the same PSU. Just put in 2x750 if you need that much power and plug one or two cards into each.

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Reply to kajabla

Overclocked Toaster wrote :

let me guess, you are using this for bitcoin mining?

that or cracking salted hash, which won't be limited by the pci-e bandwidth iirc.

Reply to vas flam

szbxa wrote :

Don't be so envy, the question is clear, maybe you need glasses? and no i don't know i have a piece of crap CPU, and no their (6990) opencl performance is way higher than 6870, there is a opencl comparision list online, what a noob!

hunter315 wrote :

No, not for gaming, i'm going to use it for video conversion with my own software.
you sure about 6 GPUs? i saw 4x6990 running on windows 7 x64 with the expected performance.
yeah, that is the reason i am posting here, i just can't seem to find any good PSU.

The Halo Don wrote :

A Quad core Athlon?

You might want to try selling a 6990 to get a way better CPU, your set-up is so im-balanced, bottleneck for sure.

why do people always try giving useless lessons instead of focusing on the real problem?

kajabla wrote :

You seem to be the only one who actually has some brain, i'm tired of these brainless fanboys. what PCI issues? there are cables for PCI-e

Reply to penihop

I wrote a huge reply, but you wouldn't understand it. Bottle necking issues, pci issues, mental retardation and or troll issues. You can't buy a brain, moron.

Reply to andrews013

what are you doing with $2200+ in graphics cards and a $100 CPU? And suggesting that someone doesn't know there are benchmarks out for 6990s really marks you as a troll/retard of some flavor...

Reply to Nnymrod

3 highend graphic card with cheap cpu . sell your graphic cards and get GTX 460 or ATI 5770 or 5850.
Also, x3 6990 with HDD 500 GB? no SSD.......... bad system
4 GB ram only?

Message edited by kimyeang88 on 06-25-2011 at 10:47:02 AM

Reply to kimyeang88

This topic has been closed by Mousemonkey

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Reply to Mousemonkey

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