|Where is the info about this "high quality replacement" PSU? And where are the details about how the thermal paste was applied?|
If you layered on the paste like frosting on a cake, that may very well be the problem. ALL current AMD CPUs use the "middle dot" method for paste application. That means both the top of the CPU & bottom of heatsink should be thoroughly cleaned of all traces of any old compound, a tiny dab placed in the center of the CPU, then the heatsink installed & locked in place. The paste should NOT be spread around. The placement of the heatsink is what spreads the paste. See the following: http://www.elitekiller.com/pics/AS5...
Another possibility may be the RAM. For one thing, it's DDR3-1600 & AMD CPUs only support up to DDR3-1333. Generally that's not a problem - the RAM just get's underclocked - but I believe the voltage for that RAM is 1.65v? You probably should have gotten RAM at 1.50v. Did you check the memory QVL list at the ASUS site?
As stated by grasshopper, strip it down & benchtest.
EDIT: I just thought of something else - you need to have BIOS version 0702 for the X6 T1100. If your board has an earlier BIOS version, that's another possible problem that would need fixing. To be able to perform the BIOS update, you would need to temporarily install a different CPU, then perform the flash, then switch back to the X6.