Is 850w power supply enough for 3-Way SLI GTX 770?

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mitchellbuehler

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Oct 30, 2011
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Hi, I've currently purchased 2 cards and I know it can support that, and it has 6 PCIe cords built into the PSU, so is it going to be sufficient, or will I run into problems with the rest of the system due to not enough power?

Current specs:
Motherboard: Gigabyte GA-Z87X-OC Force
RAM: 16GB Crucial Ballistix 1600MHz (Will upgrade to 32GB soon)
CPU: Intel Core i7 4770k (small 200MHz OC now until Corsair H110 comes in)
PSU: Corsair HX850 850w
GFX: MSI Gaming N770 TF 2GD5/OC SLI

So, for redundancy, will my current system support the addition of another graphics card, or will I need to get a 1000w+ PSU?
 
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legokill101

legokill101

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Apr 10, 2013
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that would be close you *might* be able to run it but i would strongly recoment against it at stock toms found the gtx 770 power consumtion at 248 wats so three would clock in at 738w and while your power suply can output up to 70 amps or 840w on the 12v rail you would have little more then 100w for the cpu+hdd+mobo+ everything else so it would be EXTREMLY close i would get somthing around 1000w for three 770s
 
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