ekwb EK-M.2 NVMe Heatsink (3830046991737). EK-M.2 NVMe Heatsink is a passive heatsink for M.2 NVMe Next Generation Form Factor SSDs. It is a much needed aesthetical and functional heatsink for many PC owners. It is not a secret that M.2 NVMe SSDs can overheat very easily and be subdued to thermal throttling, thus losing performance. The heatsink brings 7-30°C improvement in SSDs temperatures, or even more with sufficient air flow.