As far as i can remeber that revision will work out teh box only with the old i7920, not even teh new one, so you would have to get hold of one of tehm and update teh BIOS before anything else.
You will be able to use that processor just fine provided you update to a compatible BIOS revision. I installed a 950 in such a board and had no issues with the BIOS update process. Just to be clear, I installed the processor prior to the BIOS update with no problems.
Thanks for your response. anyway i returned the board and just got new DX58SO board revision E29331-703 with 5200 bios install. this board have new sata location and also i don't see any 4 pin molex connector only i see PCI Express power connector at bottom.
If anyone interested on this board can get it from tigerdirect or newegg