Depends on the socket of the cpu... check which sockets fit the mobile 64s as well, idk exactly what they are. Also, even if you were to upgrade, it would be very difficult to find a heatsink/fan for a 64 that would fit in ur case. This b/c its highly likely that the sempron's cooling will not be adequite.
-The Desktop: Abit NF7-S V2 w/ the old AXP-M 2500+ (OC'd) and TT Volcano 12, 1 gig RAM, 37GB WD Raptor, 80Gb Hitachi, XFX NVidia GEForce FX 5700LE (OC'd), Enermax Aluminum Case and XClio 450watt psu, DL DVD-R/RW, DVD-ROM (+ floppy)
SB Audigy 2 ZS
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