Originally Posted by Notbn
You aren't wrong, but the u12a is a 120mm cooler and performs within a few degrees.
This is only one source, but here's the u12a performing better than AIOs on LGA1151 sockets and most AIOs on AM4. Performance is less good on LGA2066 but that's probably due to the smaller cold plate on the u12a.
I agree NH-U12A is a very good little cooler (I think NF-A12x25 fan is key), but it's not quite as good as many bigger coolers.
I think our link site test procedure is seriously flawwed because their delta temps are using "ambient temperature at the time of testing."
That is most likely air temp in room, not entering cooler.
I don't consider any source that does not monitor and record air temp into cooler at same time CPU temp is recorded. Air temp into cooler / radiator is not the same as elsewhere in room and/or at different times
.. and changes with load and case fan speed.
.. air temp into air coolers effects CPU temp at full load at almost exactly a 1:1 ratio, so if air is 2c warmer so is CPU.
.. radiators not as close to 1:1
.. meaning delta results using air temp from anywhere else at any other time can eaily be off by 2c either way, espcially with air cooling.
.. that means actual CPU delta temps can easily be several degrees more or less than if using air temp into cooler.
.. even under best of conditions CPU delta temps vary a couple of degrees.
ciarlatano, others and I have verfied this in our own testing when using air temp into cooler vs room temp.