Review on 🔥 25m x 10mm x 0.20mm Double-Sided Thermal Adhesive Tape for Cooling Heatsink Pad - Ideal for LED, IGBT, IC Chip, Computer CPU, GPU Modules, MOS Tubes, and SSD Drives by James Baker

I bought this tape to attach heatsinks to Pine Rock64 chips. Clean chips work "warm but safe" at 53°C/127°F. With this tape and bare aluminum heatsinks, temperatures are consistently 61°C: 142°F ("Works warm but safe” according to DietPi OS). Removing the tape and attaching bare heatsinks to the chips brings the temperature down to 46'C/114'F ("cold run"). I later tried a similar looking 3M tape and the temp fell between warm and cool, an acceptable compromise as it is adhesive and removable. I ended up using Arctic Silver cement and permanently attached the heatsinks. Temperatures were almost the same as bare aluminum directly on the chips. With that in mind I would not recommend this tape unless you want to isolate what you want to cool down.