Threadripper Air Coolers-Silver Arrow TR4 vs. Wraith Ripper Cooling the AMD Threadripper CPUs is not to be taken for granted. We pit the Thermalright Silver Arrow TR4 against the Cooler Master Wraith Ripper using both the Ryzen Threadripper 2990WX and 2950X processors. We show you how both these air coolers perform using Precision Boost 2 and Precision Boost Overdrive. If you like our content, please support HardOCP on Patreon. NOTICE: We have gone back and updated all graphs in this review with 100% fan speeds on both coolers. As noted previously, we used the default fan curve for the original version of this article. We decided that we needed to add the fans pushed to 100% on both coolers and further look at the data. We have not changed our written analysis. Speaking in general terms for all sets of data here, we could realize about a ~650RPM increase on the Wraith Ripper (2560RPM max), which pushed decibel readings from ~46dB to ~48dB, which not much real change in sound profile at all. With the Silver Arrow, we saw up to 1100RPM changes (2350RPM max), which pushed decibels from ~46db to ~53dB, which greatly changed the sound profile. It was loud, but not exactly irritating.