Noctua NT-H1 Pro-Grade Thermal Compound Paste (Gray) 1.4 ml Renowned premium-grade thermal compound for optimal heat-transfer from the CPU or GPU to the heatsink; more than 150 awards and recommendations High-end thermal compound to reduce temperatures on PC applications and electronics Trusted Noctua quality with excellent long-term stability: recommended storage time up to 3 years, recommended usage time on the CPU up to 5 years 3.5g pack for around 3-20 applications (depending on CPU size, e.g. ~3 applications for TR4, ~20 for LGA1151) Not electrically conductive and non-corroding thermal grease: no risk of short-circuits and safe to use with all types of heatsinks