For the unfamiliar, Thermalright has done quite a few Ultra-120 models. First the excellent Thermalright Ultra-120, a 4/8 ratio heatpipe 63.5x132x160.5mm (DxWxH) cooler weighting 745g that quickly made a name for itself due to its extremely competitive performance. Then came the Thermalright Ultra-120 Extreme with two more heatpipes to make a 6/12 ratio heatpipe cooler in same size package only increasing weight to 790g. This improved performance by a surprisingly large amount. After the Extreme’s release and extremely wide success Thermalright then released the TRUE Black, which is same cooler with new appealing black paint job and minor tweaks. (TRUE is short for ThermalRight Ultra-120 Extreme). If that isn't confusing enough, they then released the Ultra-120 eXtreme 1366 RT, for then new LGA1366 socket. Thermalright went even more extreme by then releasing the Ultra-120 Extreme Copper with all copper construction and weighting a humongous 1800g and again improving their already outstanding cooler's performance with even lower temps and / or less noise! I think that is all models leading up to new Thermalright Ultra-120 eXtreme Rev.4 Black.
Edit:
Probably the most important change in Ultra-120 eXtreme Rev.4 Black is base is offset forward 7mm meaning front of fan is only 48mm from center IHS thus will fit behind most RAM modules.
I will be testing. If I can find my original Ultra-120 and Ultra 120 Extreme (and mounts are interchangable) I will do comparison testing.
More to come soon.
Edit:
Probably the most important change in Ultra-120 eXtreme Rev.4 Black is base is offset forward 7mm meaning front of fan is only 48mm from center IHS thus will fit behind most RAM modules.
I will be testing. If I can find my original Ultra-120 and Ultra 120 Extreme (and mounts are interchangable) I will do comparison testing.
More to come soon.