I will be running a Sapphire Radeon HD7850 2GB OC V2 and Intel Core i5 3570K Intel Core i5 3570K.
More aboutcorsair power supply good
good and enough ... AMD's website said "500W (or greater) power supply with one 75W 6-pin PCI Express power connector recommended "
yes,that psu will be fine for you specs...however,if you have budget to spare...a couple of tens of $, i would suggest you to go for something with more stamina...somewhere in the 650w area,as you might need it for future upgrades...
read some reivews about this psu. It not a great quality i would suggest to got for seasonic. I was also planning to buy this but not good at all its worth spending little extra