3x Compaq DL380's with 2x 3.06ghz Xeons and 4gb of RAM each. Folding 24/7 but sharing cycles with some some other CPU intensive applications. 2 boxes are Win2k3, one is CentOS 4.4. Tying them together is a 12 Port Cisco 3500 switch, Avocent KVM over ethernet switch, and an APC 19" Flat panel display with keyboard and trackpad.