Thermalright has been busy coming up with great quality heatsinks at an affordable price. They listen to their customers and come up with excellent cooling solutions. First, they beef up the NB-1, resulting in the all copper NB-1C. Then, they blow up their heatpipe heatsink to accommodate large 120mm fans. The XP-120 reviewed recently was amazing. The heatsink was massive and provided excellent cooling with quiet operation, something extremely difficult to do. Yet, everything has its downfalls. The XP-120 does not fit all motherboards. The large heatpipes and fins get in the way of capacitors on some motherboards. The XP-120 also comes with a rather steep price tag. The massive heatsink comes in at a retail price of $49.95. It's true that the performance is worth the money, but there is also the risk of having compatibility problems. On that note, the XP-90 steps in.