Geekworm for Raspberry Pi 4 Aluminum Case, Heavy Duty Passive Cooling Metal Case/Housing with Heatsink Pillar Compatible with Raspberry Pi 4 Model B Only-Black (P173)

These work very well. I've had other brands where the case didn't quite touch the thermal pads when the case was screwed on, but this one makes good contact and keeps things cool. Under regular load as a server it didn't go above 36c, and 33 was about average, and no fan was used. They even give you spare thermal pads. The case feels solid.

If you're trying to find instructions, copy and paste this into YT: Raspberry Pi 4 Case-P173/P330/P373Case works great and goes together easily, they included extra thermal pads. If you want to use the copper pad instead (you don't have to) you'll need some cpu paste which isn't included.

Excellent, fit my Raspberry Pi 4 well and I don't have to listen to the whine of the fan anymore. Probably 10mins setup, make sure you have a truly tiny amount of thermal paste (more than enough).

TL;DR: Excellent case for the money, great performance for a simple Home Assistant dashboard, and silent.Use Case: I am currently using a Raspberry Pi to run a Home Assistant dashboard in my office. I was using a different heatsink with a small fan. The fan would turn on periodically throughout the day and became quite distracting for the few degrees improvement it caused, compared to if it stayed off entirely. I experimented with a handful of cases and heatsinks until I eventually landed on this item. Wow, to say the least. It brought my temperatures down from 55-60 to 35-40. All of this without the use of a fan. No complaints and I'm glad I landed on this product.Build Quality: Feels sturdy and no complaints. The paint has some blemishes, but nothing that detracts overall from its look and performance. The product does come with a copper plate for covering the CPU. Per the instructions provided, I applied thermal paste on both sides of the copper plate and then only put the smaller thermal pads over the three other chips.Performance: Excellent. The CPU temperatures exceeded my expectations and it's silent. The entire case is made out of metal, so the case does transfer heat from the Raspberry Pi. For my use case, this isn't a problem. It's just slightly warm to the touch, and still cooler than any laptop bottom would be after a few hours of use.

Great little case works well for my needs. No fan means silent operation which is what I wanted.

I have about 7 raspberry pi's on 3d printers, pi-hole, JMRI, etc, I'm getting tired of swapping fans out on these so bought one of these. Keeps the pi 4 cool but a few cons.Needs a few flat spaces on bottom where one could attach rubber feet.Mounting slot to hang on a wall.Otherwise very pleased with this, will be getting more.

It's a fine little kit, and it is priced right.I used the included copper shim and some Arctic Silver instead of the thermal pad for the CPU. It seems to have the right amount of squish on the thermal interfaces to keep everything held together and smoosh things out appropriately.All of the thermal pads (there are two sets of 4) were cut to the right shapes, and had protective plastic on both sides which must be removed for optimal performance. One extra screw is included, along with an Allen key for tightening the screws.It cools the CPU, the RAM, the PMIC, and the USB 3 hub chip.No provision is included for cooling the Wifi chip, but none is needed or useful (and on the Pi4's PCB, the metal can covering the wifi chip doesn't actually touch anything that gets warm anyway -- there is nothing to cool here, by nature of the Pi4's design. The can improves RF interference and light sensitivity vs the Pi3B's design, which used a similar chip but as a bare unprotected silicon die).I wanted a better cooling solution for a Pi4 (I'm going on a adventure that is going to include using a Raspberry Pi on battery power while camping in the Florida sun), and I'm allergic to using noisy fans for such low-power applications. This will work great: It uses zero energy and offers wonderful thermal dissipation -- more than plenty to dump the Pi4's maximum heat output of around 6.4 Watts.In its present duty, running Kodi with LibreElec on the living room TV: It works fine. No issues. Reported temperatures while watching a film in a 68-degree room with minimal airflow are around a very-chill 31C, which is 49 degrees below the throttle temperature (and 54 degrees below the maximum allowable operating temperature) of the Pi4. I could overlock it and put the hammer down, but meh:Provisions are made for running the GPIO out with a 40-pin ribbon cable, if tinkering is in order.The finish is a nice, semi-matte black. It was consistent on the unit I ordered.One star deducted because the screws were more difficult to get started than I anticipated. It's a little bit unnerving holding the case closed with one hand (to keep the thermal interfaces where they need to be) and starting screws with my other hand. A little bit of a chamfer would completely resolve this issue, but I shouldn't have to add that myself.It would also be more-ideal if the aluminum posts molded into the top-half of the case were unpainted where they contact the parts being cooled. They're beefy and solid aluminum, and that's quite good, but the main goal of a case like this is to conduct heat and paint gets in the way of that goal.

I have four Raspberry Pi 3's and all four are installed in these aluminum cases. The cases are sturdy, with openings properly positioned. They're designed to heat-sink to the hot chips on the Raspberry Pi boards and do an effective job of keeping them cool without need of a fan.