Is this PSU good for my Build?

[Frootism]

CPU: Intel Core i5-2500K 3.3GHz Quad-Core Processor  
Motherboard: ASRock Z68 Extreme3 Gen3 ATX  LGA1155 Motherboard  
Memory: G.Skill Ripjaws Series 8GB (2 x 4GB) DDR3-1333 Memory  
Storage: Seagate Barracuda 500GB 3.5" 7200RPM Internal Hard Drive
Video Card: MSI Radeon HD 7870 GHz Edition 2GB Video Card  
Case: Cooler Master HAF 912 Plus ATX Mid Tower Case  
Power Supply: OCZ 550W ATX12V Power Supply
Optical Drive: Sony DDU1681S-0B DVD/CD Drive  
Operating System: Microsoft Windows 7 Home Premium SP1 (64-bit) 

 

[tivatar]

That PSU should be fine, and still be OK should you decide to overclock or add another HD 7870 in the future. Good luck on the build!

 

[Deleted member 217926]

Actually HD 7870 Crossfire needs a recommended 600w power supply so while the OCZ would probably work you might be pushing it trying to run 2 of those cards. It is fine for a single card.

 

[bloodmage7]

550 W should suffice you easily. I recommend you antec or corsair. refer the following link. If you can go for antec then go for it. Otherwise the one you selected is nice.
http://www.newegg.com/Product/Productcompare.aspx?Submit=ENE&N=100007657%20600014021&IsNodeId=1&bop=And&CompareItemList=58|17-341-047^17-341-047-TS%2C17-371-016^17-371-016-TS