Why? you can get a Asus P6T7 WS board with 7 Pcie slots, four will run at X16, which is much greater bandwidth then a Cubix.
-Rob-
Robert Houllahan
Director / Colorist
Cinelab Inc.
http://www.cinelab.com
MAHC-PRO 6-Core 3X GTX285 20Tb SAS Wave Panel Panny 11UK SDI Plasma.