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Best PSU for a Quad setup

T

TekRok

2[H]4U
Joined
Dec 9, 2005
Messages
2,279
What would be the ideal power supply for a quad 290/290x setup?

I have a Seasonic 1050w at the moment for 2 of my cards, and I dont believe that is enough. What worries me is the fact that there arent any good brands of PSU's above 1250w.

Thoughts?
 
I understand you say there aren't any good brands of PSU about 1250, but I know one option is the EVGA SuperNOVA NEX1500.
 
That has been discontinued, and it received REALLY bad reviews from H and many other sites.
 
ClutchAutomatic said:
I understand you say there aren't any good brands of PSU about 1250, but I know one option is the EVGA SuperNOVA NEX1500.
Click to expand...

Hah, hows about no.

Anyways, the Lepa 1600w is about the best high power PSU on the market. It's also likely the only one that can hold a full 4x290x system reliably. You're talking about 1300-1350w of video card consumption alone. Tack on about 200w for the remainder of your PC, and you're really gonna be pushing that PSU. Then add any OC, you'll quickly run out of headroom.

You genuinely might be in the market for a dual PSU solution.
 
I feel like people always go overboard with their power supplies...
 
2 crossfired 290x consume ~551W at the wall.

You do the math.
 
Jorona said:
A single 290X can pull 330w alone. So thats 1320w for 4. I'd say 1500+ watts is the only way to go reliably.
Click to expand...

Really depends on which benchmark you read. I've seen a 3960X system with two R9-290X GPUs pull ~661W from the wall. Assuming the PSU used was 90% efficient that's right at 595W of DC power for that setup. Little bit less than 330W alone, but I still recommended the Lepa 1600W to the OP when he PMed me earlier this morning.
 
I personally would get two PSUs (750-1k) and link them together. Far more affordable that way and allows for better overhead expansion (even though the likelihood of going beyond 4 cards in that rig is slim).
 
oblox said:
I personally would get two PSUs (750-1k) and link them together. Far more affordable that way and allows for better overhead expansion (even though the likelihood of going beyond 4 cards in that rig is slim).
Click to expand...

You're also doubling the risk of failure in one of the most failure prone parts of your PC.

GPU PSU fails, GPU tries to pull juice through the mobo, lighting up the traces. Then the second PSU fails because of components failing shorted, blah blah blah.

Unless you're running a true redundant power supply setup, running two PSUs instead of one larger unit is foolish. Unless you know, you cant get a PSU big enough for your rig. Then you kind of have to get two PSUs.
 
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