STFU to people who are going to say 2x512MB
1gb module rox yo!
Let me check the gfx forum, I don't remember seeing it but I'll give it a second look.
Only issue with the XP-120 is this:
LANPARTY UT nF4 - The first of PCI-e slots will be blocked by the heat pipe loop and the over-hanging fins will be in the way of the memory modules if they have the heat spreader/sink installed.