Mild, those builds are made for people on the forum who ask for the build and just that. Most of the time the people/OP's have OS already so I didn't incorporate it. It's also how THG operates, when THG says it's a $1000 Budget build they usually don't incorporate the OS either.
As for MadChemist, GTFO and make your builds then recommend them. Don't come on the forums and start trolling others builds when you have nothing to show for. I'm actually quite tired of your ***.
Urbz those prices are updated.http://us.ncix.com/products/?sku=59705&vpn=WD2500AAKX&manufacture=Western%20Digital%20WD
If you read the description further it says on NCIX US specifically.
Just btw, the CX430 is fine for the 4850.