Alphacool GPU RAM Copper Heatsinks, 14 x 14mm, 10-Pack

Late review but product overall very satisfied the copper heat sink's are good for high thermal conductivity allows heat to pass through it quickly. Project I've been looking into was to change the stock thermal paste for my PS4 Original (Matte black) turns out I could buy Thermal Pads for the memory chips if thats what's it called any ways I cut a hold on top of my PS4 shell because the heat sink wasn't going to shut properly, Each chip has it's own Thermal pads an heat sink an I've read that copper is better than aluminum for heat to pass through quickly, But this project help my PS4 from sounding like a jet engine when playing long hours an for those who are wondering I clean my console every 1-2 weeks also I use arctic silver 5 Thermal compound for the cpu chip very good quality paste. *Sony Thermal paste dried up very quickly an if I didn't looked up on youtube my PS4 would've crash or possibly break due to the over heating. Anyways well worth it!

These heatsinks are very well made and have a good bit of thermal mass due to the thick copper base. The fins are very thin which is really great for heat transfer to the air, yet they are strong enough to be bent without breaking as is shown in my attached photo. I'm using these heatsinks with a few of my single board computers, namely a couple Pi 4 B's and the (overclocked) Pi Zero 2 W shown in the picture, and they keep things quite cool.

These heatsinks are great, the foils are super-thin which gives you the maximum possible surface area in the 14mm*14mm*14mm volume. Honestly surprised why nobody did this earlier. Until these popped up the enzotech sinks were the next best thing, but if you know the direction of the airflow these heatsinks get you VASTLY better cooling. Only downside is that these are not omnidirectional heatsinks like the enzotechs: if you mount the sink 90 degrees rotated the air will go around the fins instead of through them and the performance will be very poor. So use these when you know which way the air is coming from.

Used these heatsinks on the backplate of an RTX 3080 after applying thermal pads under the plate. These definitely work well! Very hot to touch when running so they are definitely drawing heat away. Used thermal tape to stick them to the plate. The only thing to be aware of is they look big in the picture, but they're pretty small. The dimensions are correct, so take this into account if you buy them. These and the thermal pads dropped the VRAM temp 10C under the same before-after conditions.

Good heat sinks, but quality control could be higher, some the fins were bent on about half of them and I had to straighten them. Used a custom thermal epoxy blend to adhere these to the chips on my Rpi 4b (cpu and memory) and they work better than expected. My R-pi 4b overclocked to 2200mhz at overvolt=6 never gets above 53.6*C. I also put the smaller 6.5mm heatsinks this brand offers on the power delivery chip and it has made it more stable. If you do this to yours, just remember to conformal coat everything.

Using on the controller chips of my NVME drives, they work as well as the larger, more complex and more expensive coolers as long as you have some airflow. They take up a lot less space!

the base is too thin, the fins are oversized.. anything you attach these to overheats so fast this is the third different heatsink i bought and its BY FAR the worst I've ever bought. I wish i could pull them off and replace them with anything else but they are glued down :(

I wanted to upgrade the aluminum heatsinks for the stepper drivers on my laser engraver control board. These were exactly what I needed. They are identical dimensions to the original heatsinks but made of solid copper. They also come nicely packaged in a firm foam tray with each heatsink snuggly inserted into its own perfectly sized receptacle. I've very pleased with them.