Easycargo 40pcs 6 Sizes 20mm Copper Pad Shim Thermal Assortment Kit, Pure Copper Heatsink C1100, Low Profile Thermal Plate Cooler for Cooling CPU GPU VGA RAM VRM VRAM PS5 SSD NVMe M.2 2280 2242 2230

Great set of pure Copper shims. Very handy when you need a thin shim to go between the top of the CPU and the cooler. I used one of the shims to do just this when assembling my Radxa X4 SBC. The Heatsink/Fan case did not fit properly and left a gap between the top of the CPU and the cooling heatsink/fan combo. I used a shim with thermal paste to fill the gap, allowing proper heat transfer away from the CPU. First, I put thermal paste on top of the CPU, fit the proper thickness shim on top of that. Then, I added thermal paste on top of the shim and fit the heatsink/fan combo on top of that. Once it was all in place, I used the screws that came with the Radxa kit to secure everything. This keeps everything running at a reasonable temperature. No thermal throttling! I'm keeping the rest of this shim kit for future projects that may a similar solution.

Excellent selection of 20mm heatsink shims to close the gap between CPUs and heatsinks when tolerances weren't great. Grease up both sides with thermal paste.

I bought the shims to fill a clearance gap for the cooling fan inside my desktop tower. They worked perfectly and I'm glad I bought them.

Nice working set of copper shims

I docked the product one star as the case is not labelled for what is in it. Thankfully the one I needed wsa one of the pair that had a different quantity. So I just picked the smaller one. Aside from the lack of labeling the copper shims are high quality from what I could tell and worked perfect as a copper spacer for my Rpi4.

It's copper? Nice case, had to label them myself. Pre-labeled compartments would have been a nice touch but not a big deal. Have not taken calipers to them as my work provides some wiggle room with tolerances.

Good quality copper. Of course you better sand it before use.

Doesn't have the amount of shims as labeled on the container it came with. Only had 5 out of the 6 1.5mm shims that it said was in the box and only 5 out of the 7 1mm it said was in the box...