Spec

[Dec 2014]
Windows 7 Pro 64-bit, Kaspersky Antivirus
Tagan 900Watt power supply
Asus M5A78L-M/USB3 motherboard
AMD FX-8350 8-core processor
Sapphire Vapor-X AMD Radeon R9 270X 2GB GDDR5 graphics card
4x4GB DDR3 1333MHz
4x SATA hard drives (6-8TB)

whatever you do or fix please test it afterwards, better however do not fix things that work, wait until they break otherwise feel the wrath of dummy users.