Need help picking out a power supply for future building

[Felandro]

Current build: http://ca.pcpartpicker.com/p/BbqwXL

I was considering upping the power supply to plan for the future when the graphics get a bit more intense I figured I could add another 290 for crossfire since it would be a lot cheaper. I was considering getting an 850W but the wattage according to different websites is different for the 290. According to part picker it's 704W for 2 290s which makes 150W for head room fine. According to hwcompare though it puts the 290 at 300W making it 800W total and only 50W of headroom. Should I just spend the money and get a 1000W XFX or seasonic PSU. I have had a PSU blow on me before and I really can't afford to have one fry my system. I don't know how much wattage is enough or which websites are the most accurate.

 

[mclong]

I have heard this is the best wattage rating for your specific build:
http://www.extreme.outervision.com/psucalculatorlite.jsp

I personally am going to buy either a Seasonic or EVGA SuperNova G2 750 (Super Flower )
I sure like that 10 year warranty offered by EVGA on that model. Also if you REALLY want to know which PSU is made by whom under what label check out this document.

http://www.tomshardware.com/reviews/power-supply-psu-brands,3762.html

Hope this helps.

 

[TemjinGold]

OP: Are you overclocking anything? And if you are, are you going extreme? Note that those estimates you have are incredibly high. If you aren't doing any major OC, a quality 650-700 watt unit will do fine even with 2 290s. I wouldn't go Corsair CX though. Corsair has fine units in general, their CX line is just the budget line is all.