I almost don't believe this. I recently upgraded my PC from an old R5 1600 to a 5600. The old Wraith Spire cooler on my 1600 was always sufficient for that CPU. The new Stealth cooler that comes with the 5600 is unfortunately not adequate at all. Playing games the 5600 would easily spike up to 90-94C at only 40% utilization (then throttle). My idle temps were around 45-50C. After installing the Assassin X120, I now idle as low as 32C. I just booted up a game of Star Wars Battlefront 2 (which was consistently running my 5600 up to 90-94C with the Stealth cooler) and I kid you not, the temp stayed at a consistent 55C. I kept looking over in disbelief, expecting to at least go up to 70C, and it never did. I am amazed. It's also much quieter. (I should probably also note that I also replaced my rear exhaust fan, which was just the stock fan that came with the case, with an Arctic BioniX fan at the same time as I installed this CPU cooler. This is likely doing a much better job at pulling out the heat from the CPU cooler than the stock fan was). The installation wasn't too bad at all either. The only part I had a little difficulty was, getting the heat sink aligned to the screws on the brackets, but everything else was pretty easy. I'm very happy with this CPU cooler. Edit: After playing some more rounds of Star Wars Battlefront 2, the temp did top out at a whopping (sarc) 65C. Still almost a 30C drop from the Wraith Stealth cooler. I am just in awe of this CPU cooler still. I've played several other games as well and 65C is the highest temp I've seen period. This is insane. Edit2: So, not long after installing this I started to get BSODs, which eventually turned into an infinite boot loop, rendering my computer temporarily unusable. I didn't think a new cooler would cause this issue (especially because my temps were great) so I checked everything else first: swapped out GPU, RAM, bought a new PSU, RMA'd the CPU (took >2 weeks). I finally figured out the thermal paste had gone down the side and gotten on the CPU pins. It was only a little bit, so not sure why it was so problematic, unless Thermalright's claims about their paste being electrically non-conductive are not true. In any case, once I cleaned it up (used alcohol and a toothbrush) and let it dry (this is important, didn't do this at first) and then reapplied some third party thermal paste (just bought the $5 arctic stuff) making sure to not put too much, it started working perfectly again. So be careful with the thermal paste. Maybe don't use it all to avoid edge spillover. This was my first time applying thermal paste (previously had just used stock coolers with pre-applied paste) and I didn't know how much was too much. I just assumed the amount they give you with the cooler was the right amount.
