well if you look at wiki for info on semprons, based on cpu-z this is what i have...
http://en.wikipedia.org/wiki/Sempron
Models for Socket S1 (638)
[edit] Keene (90 nm SOI)
L1-Cache: 64 + 64 KiB (Data + Instructions)
L2-Cache: 256 or 512 KiB, fullspeed
MMX, Extended 3DNow!, SSE, SSE2, SSE3...