Will my PSU be enough for my new build?

bryan94sb

Distinguished
Jul 24, 2014
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18,530
Hi im new to the computer tech hardware community. I was just wondering if my psu has enough juice to power my system. I tried extreme.outversion, asus, and cool master power supply calculators and i got some mixed answers from the calculations. One said Im pushing my limits and the other says im at a pretty safe spot.

My specs:
Corsair 750 Watt Gold Full Modular
Gigabyte Z87 HD3 Motherboard
Intel i5 4670k at stock
1 Intel SSD
1 TB HDD @ 5400 rpm
10 gigs of low grade ram @ 1600mhz
(Planning on adding)***
2x Sapphire Tri-X R9 290
Corsair H100i or H110

I am planning on overclocking my CPU once I order my water cooler.
Also do you think i should not buy the 2 r9 290s instead for 1x GTX 780ti. I originally wanted 2x r9 290s in order to prepare to go 4k when the prices become alittle more affordable.
 

JOHNN93

Honorable
the second pci express lane is x4 when you crossfire the bandwidth is shares on the cpi express lanes so you will be getting half the preformance on the second gpu.gaind motherboard with x8 on the second pci express slot.