For a one block loop the CPX-1's are a great choice. Cheap, small, and silent. Can't comment on reliability as mine have only been running ~9 months.
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Q6600 @ 3.6GHz w/ D-Tek Fusion
Gigabyte GA-P35-DS3R rev.1
2x 2GB PC8000 Mushkin Redlines @ 1000MHz w/5-5-5-12 timings
Asus EN8800GT Top stock speed w/ DD Maze5
OCZ Gamer Xtreme 600W PSU
Cooler Master Cosmos on water |