ThermalRight is one of the most known and respected companies in the field of air cooling, thanks to its many excellent products that display cooling performance almost on par with water cooling systems. In the past few years, ThermalRight has released several successful series of coolers, some based on copper, some on aluminium and some combined both - the guiding purpose was to find the combination that would provide the best results. A few moths ago, ThermalRight released their new product series, called "SI", which is supposed to offer better performance and ease-of-use than the SP. In this review we will compare ThermalRight's SI-97 heatsink with several competing coolers (including its predecessor, the SP-97), in order to see if ThermalRight truly managed to outdo themselves