Aside from 1U compatibility, the primary goal in designing the new EK-Pro CPU WB sTR Rack - Nickel + Acetal water block was to cover the entire IHS of HEDT AMD® EPYC™ and AMD® Ryzen Threadripper processors and to improve the cooling performance. A dense micro-fin structure that counts 91 wide grooves fully covers the CPU dies that are located below the IHS so they are cooled more effectively.