Hello, my friend wants to build a new computer and asked me to help; these are the parts I have picked. I would appreciate it if someone could tell me if these are good and recommend and changes. Motherboard: ASUS M4A89GTD PRO RAM: Corsair CMX4GX3M2A1600C9 2 x 2GB DDR3 SDRAM Memory Processor: AMD Phenom II X4 Quad 955 Core 3.2GHz Hard drive: Samsung F3 HD103SJ 1TB internal Hard Drive SATAII 32MB Cache 7200RPM PSU: Corsair TX Series, 650 Watt Graphics card: Sapphire HD 6850