Unlimited texture size for all the tests.
Max level of detail for all the tests.
Test 1: 48 FPS, 63.3MB, used 46.3MB
Test 2: 48 FPS, 63.3MB, used 43.5MB
Test 3: 58 FPS, 63.3MB, used 41.9MB
Test 4: 60 FPS, 63.3MB, used 39.4MB
Repeating the tests several times I got same FPS but used mem varied +/- 0.3MB.
AMD XP2100+
W98SE
DX8.1a
512 MB DDR 266.
AGP x 4 (VIA chipset)
GForce 3 Ti500 (Detonators 45.23).
SB Audigy 2.