I've got an Asus A7N8X, XP2100 cpu, 512k PC2700 ram + Geforce 6800GT. Obvious huge bottleneck for that video card. I plan on getting an XP3000 cpu + 512k PC3200 ram. Can I run the PC3200 with the PC2700 for now until I can replace the one PC2700 stick with another PC3200? How much of a performance difference is there at PC2700 speeds vs. PC3200? I don't plan on overclocking right now.