Re: AMD Athlon 64 X2 4400+ and 4600+
A 2mb cache with a lower clock speed would be better than the one with a higher clock speed but lower cache. Trust me it makes a difference if you have a bigger cache. The high-end Conroes have a 4mb l2 cache and look at how much performance you can get out of them.
Rig -- Emachines T5026, 3.06ghz P4, 300W Bestec PSU, 160 sata hd, 512mb dual channel 3200 ram @ 3-3-5-8, ATI Radeon 9250 pci, dual layer 16x dvd+/-rw.