I was about to post that the DH55HC didn't seem to comply with TAC 1.1, because the CPU centre is about 87mm to the left of the rightmost vertical line of mounting holes given on the last page of the spec at http://cache-www.intel.com/cd/00/00/06/20/62086_62086.pdf , which suggests 44mm for air guide centre. But I've just found TAC 2.0, which indicates that the air guide should no longer be necessary, so the CPU is not constrained in position any more. Is this correct?
Since the air guide is clearly misaligned with the CPU, would I be best to remove it? There is one air intake fan at the bottom of the case.