如果是25000就看你要用什麼架構囉....
CPU:AMD Athlon xp 2500(2600)+ or Intel P4 2.4C FSB800..BOX
RAM

DR400 256MBx2 or 512MBx1
M/B:
AMD...nForce2 Ultra 400 or VIA KT-600
INTEL...I865PE or SIS655FX
VGA=FX5600 128MB
Sound&LAN:Onboard
HDD:80GB 7200rpm ATA-100 8MB Buffer
CASE:隨你喜好
POWER:350W大廠產品例如AOPEN等等