Re: X2 4800+
from what i've heard a dual core 4000+ runs good with 2gb of ram, so im sure the 4800+ will do great with 4gigs, only thing is it might be faster to use less ram, you have to find the sweet spot...
-Desktop- Dual Monitor, Q8200 2.34Ghz, 8GB, 1TB, XFX 6850, 7 Ultimate
-ASUS UL50- SU7300, 4GB, 500GB, G210M, 7 Home Premium 64, XP Pro
-HP NC6400- Core Duo 1.86Ghz, 2.5GB, 64GB SSD, x1300, XP Pro