How many watts do I need?

scorpion5650 · Aug 12, 2016

How many watts do I need to run two 1080s in Sli?

WD Black 1TB Performance Desktop Hard Disk Drive

ASUS VG248QE Black 24" Gaming Monitor, 144 Hz 1ms

ASUS GeForce GTX 1080 8GB ROG STRIX OC Edition Graphic Card (In SLI eventually)

Intel Core i7-6700K 8M Skylake Quad-Core 4.0

CRYORIG H7 Tower Cooler For AMD/Intel CPU

SAMSUNG 850 EVO 2.5" 250GB SATA III

2 Corsair Air Series SP120 High Performance Edition 120mm High Static Pressure Pack Fan

4 Corsair Air Series AF140 140mm Quiet Edition High Airflow Case Fan

Ballistix Sport LT 32GB (2 x 16GB) 288-Pin DDR4 SDRAM DDR4 2400

Phanteks Enthoo Pro Series PH-ES614P_BK Black Steel / Plastic ATX Full Tower Computer Case

Hawkshot · Aug 12, 2016

depends on the rest of your setup as well but to be safe a good 850W+ will be more than enough for the cards + a high end overclocking system.

Wolfshadw · Aug 12, 2016

Current specifications for one card systems state around 500 watts. Since the cards have two 6+2 pin PCIE power connectors (max 375watts), an 875 watt power supply will be more than sufficient.

That said, most cards won't come anywhere close to 375 watts of power usage, even at full load. A quality 875 watt PSU will have you covered, but you could probably get away with a quality 750 watt PSU as well.

-Wolf sends

Samer1970 · Aug 12, 2016

for GTX 1080 in SLI with i7 and oc you need from 650-700 WATTS ...

pick a good power supply , ike EVGA 650/750 G2 or Corsair RM750x/RM650x

850 watt is an overkill for it

Hawkshot · Aug 12, 2016

Wolfshadw :

I recently tested a system with 2x GTX1080 and it turns out on average the power draw from them both was 364W and I only saw a maximum of 480W so as you said you can get away with a good 750W but I like to leave a fair overhead that's why I suggested an 850w

scorpion5650 · Aug 12, 2016

Hawkshot :

Wolfshadw :

I recently tested a system with 2x GTX1080 and it turns out on average the power draw from them both was 364W and I only saw a maximum of 480W so as you said you can get away with a good 750W but I like to leave a fair overhead that's why I suggested an 850w

Thank you for the recommendation I decided to go with the EVGA SuperNOVA 850 G2 220-G2-0850-XR 80+ GOLD 850W Fully Modular

Hawkshot · Aug 12, 2016

scorpion5650 :

Hawkshot :

Thank you for the recommendation I decided to go with the EVGA SuperNOVA 850 G2 220-G2-0850-XR 80+ GOLD 850W Fully Modular

fantastic PSU good choice

I have the EVGA g2 650W to power my system couldn't be happier.

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How many watts do I need?

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Wolfshadw

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