Description of π¨ Efficient Cooling with Easycargo Heatsink 20x20x10mm - Conductive & Compact
Includes 10 pcs black anodized aluminum heatsink. Pre-applied thermal conductive adhesive tape backing. Can be applied for passive cooling of LED, FPV transmitter, Vram, RAM, IC Chips, etc. Dimension: 0.79 x 0.79 x 0.39 inch / 20 x 20 x 10mm (L*W*H). Weight: 0.25 oz / 7 gr per pc.
This was the largest surface area radiator for better heat dissipation at this size that I found, but the glue doesn't stick too well unless a fair little pressure is exerted. I didn't care but thought I'd point that out.
I bought these and a fan to put on the back of the RTX 3090 to keep it cool. The backplane is mounted on a RAM that has been cooked at 105C. As soon as I glued them on, they got unbearably hot, so the glue transfers heat well. Attaching a fan made them feel cool, so the fins provide a good surface for air to dissipate heat. Downgraded my RAM by 10C.
Not sure how durable they are but the heatsinks I received were great and the thermal tape that came with it was quite thick compared to a different brand heatsink I ordered have . I can feel them getting hot to the touch as they keep my components nice and cool. I will definitely buy this brand again for this type of radiator.