Is 650W enough for GTX970 and 650?

[ks3r]

Hi guys, I've recently built my new PC.
Currently it has i7-6700K, 2x8G DDR4, 250G SSD, 1TB HDD, and GTX 970 with 650W PSU. My motherboard is Gigabyte Z170X.
I have a 650 collecting dust and I was thinking of adding it as my second graphics card, but would that make much difference? and will my PSU be able to handle it?
thanks in advance

 

[tonystark_a]

enough for single 970

http://www.game-debate.com/hardware/?gid=2438&graphics=GeForce%20GTX%20970%204GB

for two 970 u need good 750W.

u can also check here your self
http://outervision.com/power-supply-calculator

 

[Hamperking68]

It would be enough to power 1 card but powering 2 would definitely pushing it.

You would gain more performance by getting a single 980.

 

[Guest]

Ditto on the 650w PSU as the others have stated... Just ensure also, to stick with a quality PSU:

1- 80+ Gold Certified (minimum)
2- Full-modular provides distinct advantages but is not necessary
3- EVGA, Seasonic and Corsair (dependent on which model-line) seem to be the most reliable makes but builders have their personal preferences
4- A STRONG 12v rail; more on that here: http://www.tomshardware.com/forum/324368-28-computer-power-supplies-guide

Generic Guide: http://blog.neweggbusiness.com/buying-guides/computer-power-supply-buying-guide-2015/
Buyer's Guide: http://www.tomshardware.com/reviews/best-psus,4229.html

 

[imrazor]

A quality 650w power supply will provide enough power for both the GTX 970 and a GTX 650 (which only draws 50w under maximum load). However, you should be aware that you can't just put a 970 and 650 together in tandem to get better framerates. For that to work, you have to use matching cards and have a motherboard that supports an NVidia feature called SLI. What you could do is use the GTX 650 as a Physx card, but this requires that whatever game you run explicitly supports this technology.

You also need to make sure that your current PSU has enough PCIe power connectors. The 650 requires one more 6 pin connector than the two required for the 970, so you need to have 3 6-pin power connectors from your PSU altogether.