750w enough for two 770s?

FlyingHelmet-1373206 · Aug 1, 2013

Will 750w be enough for dual Gigabyte GTX 770 OC and an OCed i5 4670k w/liquid cooling?

GPU Link:
http://www.newegg.com/Product/Product.aspx?Item=N82E16814125462

expl0itfinder · Aug 1, 2013

It should be, but I would recommend giving yourself some headroom, and going with something like this:
http://www.newegg.com/Product/Product.aspx?Item=N82E16817151102

Novuake · Aug 1, 2013

What exact PSU model is it?

envy14tpe · Aug 1, 2013

No, it is not enough. This site recommends 850W. Also, the website typically is more realistic. So, other people would recommend more wattage (but not necessary).
http://www.realhardtechx.com/index_archivos/Page362.htm

EDIT - You need 850W.

benjii · Aug 1, 2013

I doubt it. On paper it's definitely pushing the limits and would require you to have a fantastic PSU that doesn't degrade in quality over time. While you may get away with it for a while, I wouldn't recommend it.

oczdude8 · Aug 1, 2013

You need ATLEAST 850W. also keep in mind a single 770 needs 42A on the 12V rail

JackNaylorPE · Aug 1, 2013

http://www.guru3d.com/articles_pages/geforce_gtx_770_review,5.html

Here is Guru3D's power supply recommendation:

GeForce GTX 770 - On your average system the card requires you to have a 550 Watt power supply unit.
GeForce GTX 770 2-way SLI - On your average system the cards require you to have a 750 Watt power supply unit as minimum.
GeForce GTX 770 3-way SLI - On your average system the cards require you to have a 1000 Watt power supply unit as minimum.

If you are going to overclock your GPU or processor, then we do recommend you purchase something with some more stamina.

So, 750 at stock seeds, 850 if OC'ing

envy14tpe · Aug 1, 2013

JackNaylorPE :

OP is thinking 4670k + 2x770 based on first post:

Will 750w be enough for dual Gigabyte GTX 770 OC and an OCed i5 4670k w/liquid cooling?

GPU Link:
http://www.newegg.com/Product/Product.aspx?Item=N82E168...

So 850W.

killerhurtalot · Aug 1, 2013

envy14tpe :

Seriously. People needs to ACTUALLY use their calculator instead of using the chart. The chart is a piece of shit and assumes you got the shittiest PSU imaginable.

If someone even bothered to put 2x GTX 770 into their calculator (with a overclocked 4770k on a corsair H100), you'll get to around 600w power consumption with the GPUs on stock. Even if you overclock you'll barely be drawing a bit over 700w AT THE MOST.

Normally people try to leave a 10% headroom on PSUs... but I've found 5% more than enough (unless you literally add in like a ton of PCI-E slot cards or have like 10 HDDs and etc...)

Seriously.

a quality 750w PSU is more than enough for overclocked GTX 770s in SLI

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750w enough for two 770s?

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