(R:TW) Total difference in the # of units when I upgraded my comp-

Rome: Total War

There is a HUGE difference in the # of units I can put on a map every time I play a custom game now . . . It used to be around 4000-5000.

Before, I had a Radeon 9600 Pro video card, Asus K8N motherboard, AMD Athlon 64 3200+, 2x Kingston 256MB DDR-SDRam PC3200.

Now, nothing has changed except for the RAM, 2x Corsair 512MB DDR-SDRam PC3200, and 1x Kingston 256MB DDR-SDRam PC3200 . . .

But the max number of units I can have is 2400 now . . .

Wth is that?!