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questions about PSU for 4x R9 290 system

post #1 of 7
Thread Starter 
Hello!

I already got 2 PSU to use one of them for my new system, which its for mining, using i3 processor and GA-z87-OC motherboard
wont go over 4 GPUs
am wondering if any of these PSUs can handle 4x R9 290

1500W silver
http://www.newegg.com/Product/Product.aspx?Item=N82E16817256054

seasonic 1250W
http://www.newegg.com/Product/Product.aspx?Item=N82E16817151109

my other question, will the refrence card @ 100% fan speed be enough to handle the heat? considering that am not going to use riser and that I got a fan box 400mm on top of them pushing over 350CFM

thanks in advance
Edited by xref - 1/8/14 at 10:17am
post #2 of 7
If your gonna overclock your cards, probably you will need a 1500w PSU like this one
Two Cables or Shilka, can point you to that, better than me.
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Ex Machin
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post #3 of 7
Cant think of any units above the EVGA SuperNova G2 1300 watts that does not have at least one major flaw

Besides the Lepa G 1600 watts
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post #4 of 7
To be honest, it's going to be a bit of a hard sell to get much advice from people who love gaming, to help your totally non-gaming system.
Everyone is kind of pissy about the fact that miners are driving up the price of cards marketed for games.
And there isn't really a cryptocurrency that makes the investment worthwhile at this point.
4x 290's plus electric means that you'll probably have to mine for over a year just to pay for the capital, with no real idea how it might end up.
I can appreciate the idea of trying to get into an investment, but when it hits CNN you have pretty much missed the opportunity.
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post #5 of 7
Thread Starter 
though so, these r9 290 are so power hungery.

@Nixuz
look at the bright side, thousands of 2nd hand R9 290 will fill ebay if digital currency market did fail, winning a bid for r9 290 @ price of 8$ maybe, things gonna be crazy cheap soon, relax and enjoy the movie, many other miners feel this will happen, we just do not know when it will.
post #6 of 7
1600 watts minimum I'd say so get the lepa g1600
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post #7 of 7

If you leave the 290s at stock, then your power consumption while mining will be at between 1050W to 1100W. Since the power consumption will be roughly 24/7, get a good 1500W PSU or 1600W PSU. That way, the 24/7 power consumption will be in the PSU's sweet spot for efficiency.

 

The 1600W Lepa G Series is usually cheaper than that Silver-rated Silverstone PSU and it's a better PSU.

It's a computer!
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It's a computer!
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