For my reference, and yours if you wish to build something similar:

ESXi Server

  • Gigabyte GA-990FXA-UD3 Motherboard – Supports IOMMU (DirectPath I/O)
  • AMD FX-8120, 8-core, 16MB cache, 3.1GHz CPU
  • Mushkin Silverline 32GB (4x8GB) DDR3-1600 RAM
  • Corsair Builder Series CX500 500W Power Supply
  • Antec 1080AMG File Server Case
  • 2x Intel PRO/1000 GT NICs

FreeNAS Server

  • Asus M4A785-M Motherboard
  • AMD Phenom II X4 945, 4-core, 8MB cache, 3.0GHz CPU
  • Corsair Dominator 8GB (4x2GB) DDR2-1066 RAM
  • Antec High Current Gamer 620W Modular Power Supply
  • Antec Six Hundred Gaming Case
  • 3x 2TB Western Digital Green 64MB cache Hard Drives
  • 3x 2TB Western Digital Red 64MB cache Hard Drives
  • 1x 750GB Western Digital Green 64MB cache Hard Drive
  • 1x 16GB Kingston DataTraveler 111 USB Drive (FreeNas install)
  • 1x Intel PRO/1000 GT NIC

XBMC HTPC

  • ZOTAC IONITX-F-E Intel Atom 330 Motherboard/CPU
  • Kingston ValueRam 2GB (2x1GB) DDR2-800 RAM
  • Apex MI-008 Mini ITX Case
  • 250W Power Supply (Included in case)
  • Hauppauge HVR-2250 Dual TV Tuner Media Kit
  • Western Digital Blue 250GB Hard Drive (2.5″)
  • XBOX 360 Wireless Controller Adapter
  • Moneual Lab MK700 Wireless Keyboard with Track-Ball

Main Rig

  • Asus P8P67-M Motherboard
  • Intel Core i5 2500K CPU
  • Corsair Vengeance 8GB (2x4GB) DDR3-1600 RAM
  • OCZ ModXStream Pro 700W Modular Power Supply
  • Antec Three Hundred Gaming Case
  • Intel X25-M 80GB SSD
  • Seagate 7200.11 500GB Hard Drive
  • Logitech G15 Gaming Keyboard
  • ThermalTake Black Gaming Mouse