The concept behind Thermalright's venerable XP-120 heatsink has evolved considerably in the two years since it was released. The idea of a 120mm, top-down heatsink using heatpipes to distribute the heat was quite novel when we first encountered it, and Thermalright has reused the idea in the SI-120, and now the SI-128. The SI-128 is bigger and taller, but the basic concept is not that different from the XP-120.



Link: SilentPCReview