This was more of a pet project than an actual build. With the help of a friend, I modified the EP45-DQ6 to fit a 771 cpu instead of the standard 775 of the board by cutting a few pins and filing away bits meant to align the cpu properly in the socket. We paired this with a stick of high voltage ram from Crucial which was set to end up in the trash, and then set to work on the cooling with a spare watercooling kit I had lying around.
The Centurion 5 was a bit of a challenge to work with, given its age. It only fit one 120mm fan and 2 80mm, which was a problem for the enormous 360 rad we wanted to use. Luckily enough, the kit came with its own brackets for mounting the rad outside a case. After drilling a few holes and mounting the brackets to the case, we filled the loop with some distilled water the chemistry teacher was kind enough to give us. Thanks to some bad coolant that had previously been used with the loop's parts, the water was tinged pink.
The x5640 is a monster in every sense of the word. At its stock clock of 3.1 ghz it can perform on par with an i7 920, and is able to come quite close to a 6700k. The x5460's TDP of 120w is quite high, which made us apprehensive about how it'd do heatwise. However, the 360mm rad was able to take it like a champ, and we were able to overclock it up to 4.3 ghz without any thermal issues. The xeon, since it was never meant to reach anywhere near that frequency, started to have stability issues anywhere past that.