Office / Work PC build for $420

This build is old now so you can get much better parts than this
Here is the parts list :
CPU:AMD A6-6400K 2-Core 3.9GHz
RAM:x2 Crucial CT51264BA160BJ 4GB (1x 4GB) 1600MHz DDR3 8gb total
Motherboard: ASUS F2A85-M FM2
Case: Aywun A1-922 with 500W Power Supply
HDD: Western Digital WD Blue WD10EZEX 3.5" 1TB SATA 6.0Gb/s