[K12OSN] Recommendations needed for the most server for $4k

[john]

Hi All,

I've been given the go-ahead to spec a really robust server to serve
60+ thin clients. My budget is 4k and the ideal server would handle
(without breaking a sweat) one lab of 18 clients, as well as 30+
individual workstations scattered around the school.

I have been looking at offerings from Dell and HP as well as building
my own on NewEgg and TigerDirect but still haven't found a really
roaring box. I've been concentrating on AMD Duel core, 16 Gig capable
mobo's with high performance SATA drives (no backplane).

Has anyone purchased the "perfect" server for LTSP recently? I'd
really appreciate pointer in the right direction.

Thanks, as always, for the sage advice!

John