First post, by cudatox
I noticed that there were quite a few used HP ML370 G1 Slot 1 CPU upgrade kits for sale at used hardware vendors and eventually ended up purchasing one. However, these CPUs don't come with a fan attached to their heatsink. I had initially intended to simply zip tie a case fan to it to give it some airflow, but later decided to design something a little nicer: https://www.thingiverse.com/thing:4628705
This clip makes it possible to attach a standard 80mm case fan to the stock heatsink. I don't know if this will end up being useful to anyone but, there are still quite a few of the CPU kits for sale at a few different vendors.