I am replacing my really, really f-ing old motherboard, with a newer just kind of old motherboard, lol.
Motherboard: Supermicro X8DTi Rev 1.02
CPU Chips: Xeon 5550 x 2.
I bought 2 Intel E97381-001 heatsink fan combos. The bottom of the heat-sink is smooth and has no grooves. I mention that...