hello everyone.. I spend the last month looking for a solution to upgrade the CPU cooler for my PO3-620 - i7 10700 ... and all that without removing the motherboard and I kept the existing backplate and used a very easy tweak (look at the pictures)
after some research.. calculation.. head scratching.. and many Amazon returns I finally stumbled on a low profile CPU cooler with bracket that and height that would fit...
with the use of 4 small standoff screw, I succeeded to install the Cooler Master Hyper H412R.
I get very very good thermal results (will add screenshot soon)
Installation : I installed the 4 standoffs in the existing CPU fan bracket to make them longer and reach the cooler screws
here are some pictures