How well did the Thermalright Ultima 90 actually do? On the Intel side, compared to the stock heatsink, the Ultima 90 won hands down. As per its other two competitors, both come equipped with 120mm fans that put out between 85 and 110 CFM, where the fan that I used only put out a max of 68 CFM. On the AMD side, while it was only compared to the ZeroTherm Nirvana and the stock heatsink, it performed just as well or better aside from idle temps while overclocked. The Ultima 90 is much lighter and compact than the Nirvana and the Tuniq tower, which to me is a plus since I always seem to cut my hands on the fins of the others.