My current computer rigs:

From left to right: Server, APC UPS, Main Computer

Specs:

VM Server

Motherboard: BIOSTAR TA790GX XE 790GX Micro ATX

CPU: AMD Phenom 9150e 1.8GHz quad core

Heatsink: ARCTIC COOLING Freezer 64

Memory: 4GB DDR 1066

Video Card: Onboard ATI Radeon HD3300 (running headless)

Disks: 160GB System disk, 4TB active disks, 3TB inactive (Storage)

Power Supply: OCZ ModXStream Pro OCZ400MXSP 400W

Case: COOLER MASTER Centurion 590

OS: Proxmox VM Server (Debian based)

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Main Computer

Motherboard: GIGABYTE GA-E7AUM-DS2H Micro ATX

CPU: Inten Q9300 2.5GHz quad core

Heatsink: Scythe SCMNJ-1000 “NINJA MINI”

Memory: 8GB DDR2 800

Video Card: Onboard NVIDIA GeForce 9400

Disks: 500GB

Power Supply: XIGMATEK MC NRP-MC651 650W

Case: LIAN LI PC-V350B

OS: Dual boot Ubuntu 9.10 and Windows 7

My current workspace: