600Watt PSU Enough for Future MSI 760 SLI ?

gameboy1998

Honorable
Dec 2, 2013
539
0
11,060
Hi,

I have rounded off two PSUs Seasonic Eco 600 & Corsair CMPS 600W. I will currently be running a single MSI 760 but 'may' SLI it (in maybe 3 years). Will my PSUs suffice that or maybe can I get a 600W PSU now and another 300W PSU later only for the GPU and fit them inside the same case. My Rest of the build:

AMD FX-6300
Antec X1 Case
CM Hyper 101 Cooler
Kinston HyperX 8GB (2x4GB) 1600Mhz
MSI AMD 970A-G46
MSI Nvidia 760 2GB GDDR5 OC
WD Blue 1TB
128GB Intel SSD