can the corsair vs550 handles gaming

SEASONIC S12II SERIES 620W POWER SUPPLY W/80+ BRONZE CERTIFICATION

SEASONIC S12G SERIES 650W POWER SUPPLY W/80+ GOLD CERTIFICATION

Both are best and cost effective. I got the above 650W which is good for my 4790

Also you can wait for Gtx 1070 for few more days
 
The lists below helps you to determine the quality of different popular PSUs available. Out of five tiers listed, it is best to avoid buying PSUs listed in higher than Tier Three category. Corsair VS series belongs to Tier Four category because of its cheap quality. It would work fine with your configuration but for safety reasons you should consider buying a PSU of higher quality. You should note that a simple PSU failure has the potential to cause damage to other expensive components on your PC like the GPU,CPU, Motherboard etc calling for investing in a high quality PSU is a must.

http://www.tomshardware.com/forum/id-2547993/psu-tier-list.html?57352e747552b=reload