budget AMD64 for a server

One of my old (1.2 GHz) Athlon XP machines in the rack died,
so I'm looking for a minimal-price AMD64 based server 
substitute.

Any suggestions for something stable and cheap, reasonably
performant, no-frills but for 2x GBit Ethernet onboard ports? 
(Latter even not strictly required).

-- 
Eugen* Leitl <a href="http://leitl.org">leitl</a> http://leitl.org
______________________________________________________________
ICBM: 48.07100, 11.36820            http://www.ativel.com
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