I noticed some of the copper heatsinks are engraved with the pi logo. Overall they seem like decent heatsinks. The adhesive seems to hold well on to the chips.Regrettably the case seems to be just an afterthought as all the heatsinks came tossed in and not organized.

Added these to my parts bin so they are readily available to cool down hot components on SBCs. No more buying them one at a time. Just reach into the bin and grab whatever size you need when you need it. Makes life easier.

Solid product. Can use for Mobo's or other devices.

Few years back I had to replace my fan in my laptop, (bearing died), as part of that I had to take off the cooling assembly, which exposed and put the final nail in the coffin for the factory thermal pads.I didnt have any thermal pads on hand and I knew better than to try to run my computer wihtout them... but I did have these...They worked like a charm and actually has my laptop running 10c degrees cooler!

Nice assortment. Same price basically as just getting a 10 pack of one size. this way you get multiple sizes and some copper shims. Great value.

I got these for a camera on my 3d printer.

I used a couple of the 14x14x1mm shims on an RX6400.These Shims did not do much in dropping temps during heavy usage, maybe 2C to 3C however; I did notice a significant increase in how fast it cooled down going from heavy usage to idle.(note: Thermal Paste was replaced aswell)Before the card on cold boot-averaging around 45c to 50c-under load peaked at 83C and junction temp was 90c-After heavy usage and it cooling down to idle and very low usage would hover in the high 60s low 70s which i did not like seeing.-light work and continued use would stay around 67cAfter thermal paste and copper shims-averaging around 42C - 47C-under load peaked at 80-83C So there was not much of a huge change there-The Heavy use and then cooling down to idle at this point is where it made the wild difference. It would take less then 8 seconds to go from 83C and plunge down to 65C and then slowly taper off around high 50s and then eventually go back to high 40s! so not to shabby!The few grams made the difference in cutting time down the to fraction it was taking originally to see Temps drop down after gaming or heavy use.I think if i had added these shims under the shroud would have benefited more then near the Die because of the air contact they would have being where the fan is (the shroud is part of the heatsink). This is really not the best way to try to drop temps as i believe the type of card i have would benefit having at least 2 more flat copper pipes to really make a differenceThe 2nd project faired far better.I Added a Copper shim and paste to the southbridge heatsink on an old Gigabyte motherboard i was refurbishing.That had made a huge difference. Southbridge ran hot and would shutdown even with a light overclock, or i would periodically see that my computer had restarted and reset BIOS to default from a hardware failure.After the mod, that whole issue went away and my overclock has been stable ever since!I dont have a before temp. reading. For after:temps peaked around 50-55C but never went above that. idle temp saw a 22C-25C.3rd project was a Dell Latitude 7480 where i used 5 of the 14x14 shims and one 12x12 engraved shim (i thought it was a nice touch) to try and moderate the temps for the i7 6600U. Junction TDP is 100C and i had seen it almost hit the markBefore Shims:-Fan would be on blast and almost full power-Idle - 50-56C-Load - Peaked around 94-95C average 82C-Average jumped around from 78C - 85C moderate useThermal Throttling and would not hold the 3.2 turbo boostAfter Shims:-Fan does not ramp up to full blast, will turn on but is more of a mild blast.-Idle around 35C - 41C-Load Peaked at 85C Average 74C-Average temp 68C - 72C moderate useThe laptop saw a huge improvement in thermals dropping -10 to -15 degrees and the system feels alittle more stableThis is an inexpensive pack to get for any light to mid repairs and projects. I know this pack is geared for Raspberry Pi systems, but the sizes i was looking for were all here in this package that works great for any other project i needed them for. happy with them!the adhesives are the weak part of this. They do ok and they adhere fine but if you are needing to readjust or end up making a miscalculation on placement and need to move these, the adhesive will rip and come up or start to separate from the heatsinks. I guess that can be something to be thankful in they are forgiving in that regard but do know the fragile tape will be a little mangled.Adding thermal pads with adhesion would do a lot better then tape alone. Pick up some better thermal tape with these or for a more permanent solution, go for thermal glue

This little pack has a punch and is so cute they work in all aspects as it be gpu, cpu, motherboard or even xbox 360 XDi recently slapped an aio on my old rgh xbox 360 which in return left the on board gpu and ram exposed to just self cooling no more fan so i added little heatsinks to each ram chip and gpu and added a passive flow fan on the side to allow air flow works great and underload game temps are 45c maxing at 48-49 dances between the twoall in all will works for anything fits right onto my pi and other chip set in that size the thickness is just right not to huge not to small did however had to combined 4 to make one big one just for odd sized chips but even then 4 small ones worked perfectly as some are squared some are rectangular so a size or shape can me worked with!