A few weeks ago I installed a Cryorig C7 on a MSI B250M Mortar mobo to cool a an Intel i5 7500. I had difficulties installing the C7 using the backplate, which is different from the one shown on the installation video.
The four mounting posts/feet on the C7 matches the holes on the mobo, but only three on the backplate.
So, out of fear that I might damage the parts involved, (my first time installing a cpu cooler) I instead used the included washers/spacers.
For about three weeks the installation seems good, but I still has doubts from not installing using a backplate.
Idle temps are about 40 deg C, under load are 60 deg C (playing GTA V), with an ambient temps of 36 deg C.
so is this setup, me not using the backplate OK?
By the way the C7 are brand new/unused, bought from a friend for about 20 us dollars, and the case are a Fractal Design Core 1300