How many Watts do I need to power this system

PCFnatic3 · Dec 3, 2015

my build consists of:

Case: NZXT H440

CPU: Intel 4960k

GPU: MSI GeForce GTX 760 TF 2GD5/OC

MOBO: Gygabyte Ultra durable Z97X-UD3H

RAM 8gb

WaterCooler: Corshair h100i

HDD: Seagate 1tb

I am looking to add two more of the same GPU, can someone show me a cheap decent power supply that will work with thte two new GPU's. I currently have a 600w gold EVGA one. Or if you have any other recommendations to increase frame rate for games and the overall power of the system.

clutchc · Dec 3, 2015

You want to power 3 x GTX 760 with a cheap PSU? Forget cheap, go quality if you want it to last.
http://www.newegg.com/Product/Product.aspx?Item=N82E16817207014

Dark Lord of Tech · Dec 3, 2015

600w gold EVGA , no such PSU.

BadActor · Dec 3, 2015

instead of powering three cards, sell the one you have now and get a GTX 980 or R9 390. Performance would probably be better.

PCFnatic3 · Dec 3, 2015

clutchc :

How many Watts?

clutchc · Dec 3, 2015

PCFnatic3 :

This site suggests 900W: http://www.realhardtechx.com/index_archivos/Page362.htm

PCFnatic3 · Dec 3, 2015

clutchc :

PCFnatic3 :

This site suggests 900W: http://www.realhardtechx.com/index_archivos/Page362.htm

Do you think that would be under full load?

clutchc · Dec 3, 2015

PCFnatic3 :

Yes. That is what it means. Hard to say what your system would actually generate. It would be a rare instance that all three GPUs would be at full load w/o some bottleneck with a 4960. Especially at X16, X8, X4 lanes that your board has. But possible.

PCFnatic3 · Dec 3, 2015

clutchc :

PCFnatic3 :

Yes. That is what it means. Hard to say what your system would actually generate. It would be a rare instance that all three GPUs would be at full load w/o some bottleneck with a 4960. Especially at X16, X8, X4 lanes that your board has. But possible.

ok, my mobo can support the 3 way SLI though I am assuming, and I was wondering if the 3 GPUs combined would be comparable to a 980?

also, would this PSU work? http://www.newegg.com/Product/Product.aspx?Item=N82E16817139140

clutchc · Dec 3, 2015

That PSU would work, yes. 3 x GTX 760 would be faster than a GTX 980, but it would not be as smooth. Expect some occasional stutter. It all depends on how well they scale in SLI. I've never run 3 of any cards. But I have done 2 way SLI and CF. And the heat buildup will be intense if you manage to heavily load all three cards.

PCFnatic3 · Dec 3, 2015

clutchc :

I dont want to create a custom water cooling loop... is there any other way to cool them besides the fans already on them

clutchc · Dec 3, 2015

The stock fans should be fine for cooling the cards at stock speeds. I meant the heat buildup inside the case. You will need good airflow to dissipate the heat.

PCFnatic3 · Dec 3, 2015

the case has 4 fans and the fans on my watercooling radiator blow air out... well ill see if the cards are getting to hot during games.

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