Need help on PSU option

rnewton8

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Nov 19, 2011
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I am building a new Skylake Z170 build, with a GTX 960.

When i put everything together last night, the system wouldnt post,(almost freaked out) and then i noticed the motherboard has an 8 pin connector, just like the one that is used on my GTX card. My current PSU is garbage, and doesnt have 2 8pin connector. Actually it didnt even have one, i had an adapter for the GPU.

So going to get a new PSU for my new build, and wanted to know how many watts do i need.

For 1 GTX 970, 2SSD's on an ASrock Z170 Extreme 4 ---would 550 be enough? Or should i go to 650?

For upgrade path to SLI GTX 970 would 650 be enough or would i need to step it up to 750?

I was thinking of going with the Corsair RM series, since I am focusing on a silent build, my case is a Define R5 and my CPU cooler is a giant sized Noctua

thanks for input
 
Solution
Answers here:

http://www.tomshardware.com/answers/id-2311121/power-supply-requirements-nvidia-gpus.html#14243229

http://www.geforce.com/hardware/desktop-gpus/geforce-gtx-970/specifications

970 Thermal and Power Specs:
98 C = Maximum GPU Temperature (in C)
145 W = Graphics Card Power (W)
500 W = Minimum System Power Requirement (W)
2x 6-pins = Supplementary Power Connector

SLI - 500 + n x (145 +20 peaks) = 665 watts for 2 cards

Use a 750 watter ... 850 if ya want to push OCs to the limit.


http://www.guru3d.com/articles_pages/nvidia_geforce_gtx_970_and_980_reference_review,7.html

Subjective obtained GPU power consumption (970) = ~ 164 Watts

Here is Guru3D's power supply recommendation:

GeForce GTX 970 or 980 - On your...
Answers here:

http://www.tomshardware.com/answers/id-2311121/power-supply-requirements-nvidia-gpus.html#14243229

http://www.geforce.com/hardware/desktop-gpus/geforce-gtx-970/specifications

970 Thermal and Power Specs:
98 C = Maximum GPU Temperature (in C)
145 W = Graphics Card Power (W)
500 W = Minimum System Power Requirement (W)
2x 6-pins = Supplementary Power Connector

SLI - 500 + n x (145 +20 peaks) = 665 watts for 2 cards

Use a 750 watter ... 850 if ya want to push OCs to the limit.


http://www.guru3d.com/articles_pages/nvidia_geforce_gtx_970_and_980_reference_review,7.html

Subjective obtained GPU power consumption (970) = ~ 164 Watts

Here is Guru3D's power supply recommendation:

GeForce GTX 970 or 980 - On your average system the card requires you to have a 500 Watt power supply unit.
GeForce GTX 970 or 980 in 2-way SLI - On your average system the cards require you to have an 800 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.

The RM isnt very good but the newer RMx is pretty decent .. on par with the G2 but G2 is cheaper. These all satisfy the SLI requirement unless you looking for some extra headroom for voltage stability at extreme over clocks. The B2 will do just fine and is cheaper than any capable 600-650 watter

$49 EVGA B2 750 (9.0 Performance / 9.5 Build Quality)
http://www.jonnyguru.com/modules.php?name=NDReviews&op=Story6&reid=393
http://pcpartpicker.com/part/evga-power-supply-110b20750vr

$85 EVGA G2 750 (10.0 Performance / 9.5 Build Quality)
http://www.jonnyguru.com/modules.php?name=NDReviews&op=Story6&reid=380
http://pcpartpicker.com/part/evga-power-supply-220g20750xr

$120 Corsair RMx 750 (10.0 Performance / 9.5 Build Quality)
http://www.jonnyguru.com/modules.php?name=NDReviews&op=Story6&reid=452
http://pcpartpicker.com/part/corsair-power-supply-cp9020092na

$100 EVGA P2 750 (10.0 Performance / 10.0 Build Quality)
[the 650 and 860 both get 10/10
http://www.jonnyguru.com/modules.php?name=NDReviews&op=Story6&reid=444
http://pcpartpicker.com/part/evga-power-supply-220p20750x1


 
Solution