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Author Topic: 2x7950 and a 1200W PSU - But how to connect them?  (Read 1317 times)
ImI
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April 09, 2013, 11:33:11 PM
 #1

Hi there,

i have got two 7950s and a CoolerMaster1200W PSU.

The 7950s have two 6-Pin entries and the leads from the PSU have 6-Pins and also another 6-Pin going out from those 6-Pin. (I hope its clear what i am trying to say.)

Do i have to put two single 6-Pin leads on every GPU or just one and use this extra 6-Pin for the other entry of the GPU?

Hope thats not to confusing, maybe i find a pic.

Greets

ImI

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dethdeks
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April 09, 2013, 11:35:04 PM
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each card requires you have both 6 pins plugged in to the car

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April 09, 2013, 11:37:49 PM
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you need to connect 4 plugs to your cards. It doesn't matter which ones, as long as they are supposed to be connected to a PCIE GPU

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April 09, 2013, 11:39:43 PM
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they (the 2* 6 pins) can come from any source, the same cable is ok, even 2 molex adapter,  anyway 1200W is overkill.

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April 09, 2013, 11:41:31 PM
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You could probably fit about 5 or 6 7950s on a 1200W PSU (assuming you're running with a Silver/Gold/Plat rating).
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April 09, 2013, 11:46:29 PM
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OK, so it doesnt matter when i use one cable for each GPU?? (Of course using both 6-Pin leads of that cable)

Yeah i know its an overkill. I am thinking of running 4x7950s.

5-6?? Really? I thought each 7950 needs 200W and 200W is as safety/mainboard etc. ?
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April 10, 2013, 01:53:37 PM
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Let me jump in and say I'm using three 7950s, each with 2x6 pin connectors, with an 850W Gold rated PSU. You're missing a few cards!

The cards should come with SATA or Molex to 6-pin PCIe converter cable, no?

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April 11, 2013, 10:46:20 PM
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litecoin need more power because it uses memory, but bitcoin uses no memory so you need less power.

IMO you never have to much power  Grin
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