Is 600W enough?

[Tierson]

I'm building a computer and I'm not sure on how much overhead I need when it comes to power.  According to pcpartpicker and some power supply calculators, a 90% load on the system will need 581 W.  Is it even safe to run with 600W continuous with 1 12V rail @ 49A?  Or should I just do what I'm thinking and play it safe with a 750W?  Any help would be appreciated.

 

PCPartPicker part list / Price breakdown by merchant

 

CPU: Intel Core i5-4690K 3.5GHz Quad-Core Processor  ($226.99 @ SuperBiiz) 

CPU Cooler: Cooler Master Hyper 212 EVO 82.9 CFM Sleeve Bearing CPU Cooler  ($28.98 @ NCIX US) 

Motherboard: Gigabyte GA-Z97-HD3 ATX LGA1150 Motherboard  ($65.00) 

Memory: Crucial Ballistix Tactical 8GB (1 x 8GB) DDR3-1600 Memory  ($37.99) 

Storage: Samsung 850 EVO-Series 120GB 2.5" Solid State Drive  ($65.00 @ Amazon) 

Storage: Western Digital Caviar Black 1TB 3.5" 7200RPM Internal Hard Drive  ($0.00) 

Video Card: Sapphire Radeon R9 290X 4GB Tr-X OC Video Card  ($279.99 @ Newegg) 

Case: Corsair 200R ATX Mid Tower Case  ($57.99 @ Micro Center) 

Power Supply: EVGA 600B 600W 80+ Bronze Certified ATX Power Supply  ($54.99 @ Micro Center) 

Mouse: Logitech G500 Wired Laser Mouse  ($0.00) 

 

750W option http://www.newegg.com/Product/Product.aspx?Item=N82E16817371073

[SuperPug]

Yes, perfectly fine.

[Ian Schmid]

yep deferentially  

[xnoobftw]

I ran my 290x with a g600w and i experience crashes from time to time... It was 80+ bronze but not a really good PSU. Right after i upgraded my PSU to evga g2 850 watts i never had that problem anymore

Just my twocents (With real experience)