Quarter of a Gb of RAM, 120Gb of disk, 500Mhz CPU and no fans at all. It's amazing what you can get for $400 nowadays.
Bizarrely it is actually the fastest PC I own and it's just going to be sitting in a friends office acting as my off-site backup space (and backup DNS/MX), silly.
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Remind me to change my signature to something more interesting someday