MIFcom has a nice collection of passively-cooled systems, and is now launching an Ivy Bridge build (in a very small enclosure).
✓ Intel Core i7-3770S (65W TDP)
✓ ASUS P8H77-I mini-ITX motherboard
✓ Intel HD Graphics 4000
✓ 8GB Crucial DDR3-1333
✓ 128GB Crucial SATA3 SSD
✓ Blu-Ray Combo disc drive
✓ Fanless external power adapter (84W)
✓ 260 x 88 x 235 mm
✓ 949 euros
