never mind APU..its expensive for a low performing processor with mediocre GPU in it. it will be obsolete in no time..
forget about e6600, whatever version it might be, though fast, u will end up buying obsolete S775 technology.
board replacement will be a problem then.
go Intel Intel G630 (2.7G) 3mb Pentium DC PhP 3130
board will be compatible for future FASTER Procie upgrade..
and choices of 512 | 1GB - 128bit / 256bit VC abound..
not to mention cheap DDR3 modules to up the ante