4GB! I hadn't thought of that at all...If I go DDR2, it will max out the mobo, though - I would have to switch to DDR3 to upgrade to 8GB...
But who cares, if there's a performance gain from 2 to 4, it's a modest price hike, especially if I go DDR2 at the same time...2 x 2GB Corsair XMS2 Xtreme...