System Cooling posted a review on the Thermalright Ultra-90 CPU Heatsink

Thermalright showed off two new coolers at Cebit earlier this year, the Ultra-90 and Ultra-120, which are similar in design to the passively cooled HR-01. Both of these new coolers incorporate heat pipes that transfer heat out of a Nickel plated copper base and up into a large array of closely spaced aluminum fins. The Ultra-90 and Ultra-120 heatsinks also come with Thermalright’s classic fan mounting clips to support active fan cooling.

Thermalright Ultra-90 CPU Heatsink Review