Been using 4x1 of your PC29600 ran in a Asus X38 board and with the new BIOS 0903 they are running great. Ran at a little under 1150 max with the Rampage 0403 BIOS. With 0903 a little under 1250 at 2.26v with a Q6700. The Q6700 is a bench only, E8500 is a Prime run. Always knew it was the board so thanks for some great ram.
Asus P5E X38 BIOS 0903, Q6700 8x450, RAM 1200 5-5-5-15 -3-42 tRD 6 2.26v
Asus P5E X38 BIOS 0903, E8500 9.5x432, RAM 1152 5-5-5-15 -3-42 tRD 6 2,28v