sorry m8 had a nightmare of a time, motherboard was sent back with nps, i tired it. it worked perfectly on air, as soon as i put cpu block on got nothing again, got fed up with shop, saying the warrenty is void if its watercooled, wich is complete and utter tosh, considering, the asus p5dh deluxe comes with a mosfett fan for when you water cool, go figure...
anyhow i have had to order a new motherboard. from a competitor, Abit IN9 32X MAX 680i Socket 775 DDR2 7.1HD audio ATX with PCI-E WIFI,depnding on the staff on ock the psu i ordered a few weeks ago,could well be the last thing i order from said shop.
not happy with the service i have resieved, asus board will not now again boot up!!!
so i have to wait until tomorrow for new motherboard.
what is underneath is empty space m8, once the two drive bays are installed and once you use the two rear 120mm fans hd bracket there isnt that much room for much else, as the hd brackets bolt onto the back of the 120mm fans.