Ya, I'm getting my friend the 2500 for his uber budget gaming comp. I'd stay away from the 2600 as it only has a 128mb chache, but the 2800 is a good buy.
I'm using a non 64bit sempron 3000 for this laptop and it runs stuff great. The quality difference between the athalons and the semprons isn't as bad as pentiums and celerons.
In The Mail!!!!- Athlon 64 3500 @Stock/Abit K9N SLi sAM2/2GB G.Skill DDR2 800 @Stock /XFX G7900GT XXX 520/1500Mhz/74GB Raptor w/ 16mbcache/300GB 16mbcache SATA HD/NEC DVD-RAM Burner/OCZ ModStream 520watt psu/ThermalTake Armor Jr./Logitech EX110 mouse/keyboard