Cough your HDD... Ermm... It's decent, but I've heard Seagate fails alot (meaning breaks a lot) course I don't have experience with them but a better/prospect to look at is the Samsung F3 500gb, same price but it has a better platter size and such.
Another thing, I've heard bad things about the Cooler Master Extreme series, maybe not the plus version but about the just plain Extreme. Umm... I recommend getting this: http://www.newegg.com/Product/Product.aspx?Item=N82E16817171036&cm_re=cooler_master_silent_pro-_-17-171-036-_-Product
The Cooler Master Silent Pro 600w, it's 100ws less but is 80+ Certified so you can be assured a good wattage. So that's just something you might want to look at. The Silent Pro series also really RAELLY quiet, I know i have the 700w version!