Dav3x

That is something I never thought about, any suggestions?

Nope, I only have one 1070 now. That psu is really that bad? I didn't know that last year, I was looking for some white psu so I pick it.

I bought these last year and want to upgrade a little bit. It seems I need a better power supply.

Hi guys, currently I am using a game pc built last year, I am considering upgrade it because I get a new 4k tv and I want to game on it, single 1070 can't handle it very well (25-35 fps on 4k). So I am thinking about adding another 1070. The question is do I need to change my old power supply or the 550w is enough for it. I checked my specs with 2 GTX 1070 on https://outervision.com/power-supply-calculator, and the result is 514W. My specs: Core i5-6600k GTX 1070 Founders edition Asus z170 AR motherboard Kingston 8G 2400mhz DDR4 RAM*2 Samsung 512G ssd 1tb 7.2rpm wd blue hard drive NZXT HALE82V2 550W power supply