This looks like a repeat of what happened in Doom 3 and Half-Life 2. The nForce 4 and AA8XE take the top two spots, with the rest of the boards all following in a tightly-knit group.
X2 Rolling Demo
Amazingly enough, the P5RD1-V takes the top spot in X2, beating even the nForce 4 system! Save the big bang for the very end, eh?