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Recommended PSU for i5-4670k and GTX 770 SLI

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June 7, 2013 1:06:28 AM

Hi !
I'm building my new gaming configuration.

- Gigabyte GA-Z87X-D3H
- Intel Core i5 4670K
- Gigabyte GeForce GTX 770 OC 2Go x2 (SLI)
- Corsair VENGEANCE PRO 2 x 8 Go DDR3 PC12800
- Seagate 500GB
- Seagate 2To 7200rpm hdd
- OCZ Vertex 4 - 128 Go ssd
- Samsung DVD-RW drive

But I don't know for the PSU ! Should I take
- Seasonic Platinum - 760W
or
- Seasonic Platinum - 660W

Which one will be enough / not overpowered ?

Thanks !

Best solution

a b 4 Gaming
a b ) Power supply
June 7, 2013 1:21:27 AM

Well lets look at this here 1 card on its own will exert 230 Watts on its own add another card and add that times two with the margin of it maybe being higher with two cards lets add 100 that puts you at 560. Your processor will use 84 watts however if you go into overclocking it will approach near 120 probably at peak. I would go with the 760 I think that is a safe way to go.

http://www.geforce.com/hardware/desktop-gpus/geforce-gt...

If you go to the link and scroll all the way down to Graphic card power you'll see what I'm talking about.

Here are 3 different power supplies that kind of follow your description I would go with either the XFX power supply or the Corsair which are both seasonic oem based. Also I've included the seasonic one so you see that as well.

PCPartPicker part list / Price breakdown by merchant / Benchmarks

Power Supply: SeaSonic 760W 80 PLUS Platinum Certified ATX12V / EPS12V Power Supply ($178.98 @ SuperBiiz)
Total: $178.98
(Prices include shipping, taxes, and discounts when available.)
(Generated by PCPartPicker 2013-06-07 04:20 EDT-0400)


PCPartPicker part list / Price breakdown by merchant / Benchmarks

Power Supply: Corsair 760W 80 PLUS Platinum Certified ATX12V / EPS12V Power Supply ($159.99 @ Newegg)
Total: $159.99
(Prices include shipping, taxes, and discounts when available.)
(Generated by PCPartPicker 2013-06-07 04:21 EDT-0400)

PCPartPicker part list / Price breakdown by merchant / Benchmarks

Power Supply: XFX ProSeries 750W 80 PLUS Gold Certified ATX12V / EPS12V Power Supply ($109.99 @ Newegg)
Total: $109.99
(Prices include shipping, taxes, and discounts when available.)
(Generated by PCPartPicker 2013-06-07 04:21 EDT-0400)
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June 7, 2013 1:30:34 AM

I would go for the AX760 as Bigshootr suggested. I have one, and even with two 7950's, the fan doesn't even turn on! The Seasonic is the same, as Seasonic made the AX760, however Corsair's Customer service is unbeatable, and its cheaper too.
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June 7, 2013 1:36:34 AM

No argument about corsair's service. They replaced my H60 watercooling screws when i mailed them just because i was stupid enough to lose them. Great customer service.
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a b 4 Gaming
a b ) Power supply
June 7, 2013 1:37:25 AM

Yea the reason they don't turn on is because they only turn on when you use over a certain amount of power or something along those lines they are built with superb quality. I do agree as well corsair has AMAZING customer service. I had an issue with my h100 that I had and then had it RMA'd and since they don't make it anymore sent me a h100i. I personally use the ax850 which is overkill for what I have now a gtx670 however at the time I had two cards in sli 560Ti's.


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June 7, 2013 1:39:23 AM

Lot of thanks !! Especially to bigshootr8 for your very detailled explanation !

I think I'll go with the Corsair AX760 one ! Seems very nice !

Thanks a lot for all your help and advice !
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a b 4 Gaming
a b ) Power supply
June 7, 2013 1:41:25 AM

Of course Enjoy your new rig man :) 
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June 7, 2013 1:51:34 AM

You won't be displeased. Yeah, it only turns on when it goes over a 540W load. That means its basically a 540W fanless PSU, most of which are extremely expensive because they need to be very efficient. When I heavily OC my 7950's to around 1.2 GHZ, with a meter, I only use around 570W, and it still doesn't turn on. The fan is silent too, I personally leave it on my rig on idle, just to squeeze a little more life out of it after the 7 year warranty, however when I want true quietness, I turn it off.

you'll notice it has a Hybrid and On mode. Hybrid leaves it off until 540W load (Its temp controlled, so it can actually go higher and still not turn on if its cool enough), while On leaves it on 24/7. On is preferred if you leave your rig on high wattages 24/7, but not high enough for leaving the fan on, ie. I would leave the fan on if you had your system using 500W for more than an hour.
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August 8, 2013 11:01:21 AM

bigshootr8 said:
Yea the reason they don't turn on is because they only turn on when you use over a certain amount of power or something along those lines they are built with superb quality. I do agree as well corsair has AMAZING customer service. I had an issue with my h100 that I had and then had it RMA'd and since they don't make it anymore sent me a h100i. I personally use the ax850 which is overkill for what I have now a gtx670 however at the time I had two cards in sli 560Ti's.




nice rig:-)
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a b 4 Gaming
a b ) Power supply
August 8, 2013 6:31:16 PM

Thank you sir. I changed a few things since then. I ended up changing the colors to white. And I didn't like how the SP120 Quiet Editions were performing on the top so I changed them for the infamous Noctua NF-12's and man world of difference honestly and probably just as quiet if not more so. Also corsair fans have kind of a metal grindy sound if your ear next to them no such thing with Noctua fans just air.
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