Best Linux Distro?

[rawfuls]

For that older box.. have you tried Xubuntu?

Looks to be a slowed down version of Ubuntu, exactly the same stuff, just... well, less of a powerhog.

What games do you play, may be easier to find the right setup for you..

I have a budget system (AMD Athlon II X4 620 @ 2.66GHz [Hundred dollar processor, cheapest on the market thus far], and a GTS 250)
Can run MW2 on max settings without breaking a sweat.

Just added an extra 4GB, 8GB total, this machine is rocking now..