Geekworm for Raspberry Pi 4 Armor Case with Dual Fan, Armor Aluminum Alloy Passive Cooling Case Compatible with Raspberry Pi 4 Model B Only

Fans are puny, hard to see they make much difference, but they are VERY quiet. Fans do not appear to provide airflow to any fins, so are apparently just cosmetic anyway. If fans fail, just pitch them and I doubt you will notice any difference. Heat sink material is massive, fins even where they can make no difference. Mounting fans on the end to allow them to blow air between the fins might have made more sense. Note: no nice little rubber feat supplied, and nowhere to mount them anyway. This means, with cables attached, this little unit slides easily on hard surfaces and does not want to sit flat. Great protection for the PI board, but still easy access to the 40 pin I/O header. Fan wiring sticks up in the air, but I don't know how one would avoid that. Probably not an issue if you are going to be connecting to the I/O header pins anyway. No provision for a wall mount like some other cases have. Case mechanically transfers a faint whine from the fans if placed on a hard surface, rubber feet would probably help this.

I just received my case this week and can confirm that there are still cases in the pipeline with the spacing issue. With some pressure, I was able to get both sides of the thermal pads to adhere, but in less than an hour, the pads pulled away and the Pi started heating up fast. Combining the pads with a bit of Arctic Silver resolved the issue, but I may file down the case to get a tighter fit.It's a nice case, but it's a bit misleading. The fans are mounted so low to the heat sink that there's very little actual airflow through the perpendicular slats. Additionally, more than half the top channels (the ones that run parallel to the fan) have NO airflow from the fans at all. The bottom surface is designed to look like a heat sink, but has no contact with any surfaces to conduct heat from (and the through screws aren't conducting much from the top)Holes drilled through the fins to the underside of the fan (radial, not perpendicular) would make a huge difference as would some additional space between the fans and the heat sink. An optional heat pipe between the top and bottom plates would also make that bottom plate more than decorative. (though sitting it on top of my Coral stick is making some use of it.)With that said, it's a very nice case/mount that's significantly better than the stock heatsinks. The fans have limited value, so I might recommend the no-fan version for more cooling surface area. But overall, I'm happy with the purchase.

Mine arrived 8/17/2019. After reading the Scott Thomas review I made sure to check the clearance between the SoC, RAM and USB chips and their respective cooling bosses on the inside of the case top. I dry fitted the case top to my Pi 4 with a small ball of Play-Doh on top of each chip. After removing the case top, there was a thin film of Play-Doh on each chip, and the excess was squeezed out past the edges. I carefully scraped off half of the film on each chip and compared the thickness of the remaining half to a piece of 80# card stock. The Play-Doh film was thinner than the card stock. In other words, the clearance over the chips was less than 0.2 mm, assuring that the included 0.5 mm thermal foam pads can compress by more than half and function as expected. The issue reported in the Scott Thomas and MarkD reviews has apparently been fixed.I tested the cooling by running cpuburn-a53 for 15 minutes at the stock 1.5 gHz clock speed. This program runs all four cores continuously. The SoC temperature, monitored both by cpuburn and RPi-Monitor, stabilized 58-59C, while the ambient room temperature was 27C. RPi-Monitor shows a SoC temperature of 43-44C at idle.UPDATE August 24, 2019With the SoC overclocked at 2.0 gHz and over-volted at 1.0441 V, and the GPU overclocked at 600 mHz the couburn-a53 15 minute test stabilized at 78-80C but never throttled below 2.0 gHz. The ambient temperature this time was 25C. This cooling solution is just barely adequate for overclocking with all 4 cores running at 2.0 gHz.

Nice case, with a good fit, but as Mr. Thomas above stated, the thermal pads on the ram and the USB controller do not come in contact with the case that actually acts as a heatsink. Well built and easy to put together with supplied hardware, and the thermal pad does come in contact with the CPU, but not the other chips. Thicker thermal pad or two pads included would have been nice. 42c at idle. EDIT: Adding 2 stars for the communication this company provides. Within a day of my review going up, the guys contacted me and said they had the fix for the thermal pad problem, and possibly a bad batch went out. IF they can fix the problem with heatsink contacting all chips then this is a 5 star product. 5 stars already for customer communication.

This case does cool the pi really well, but the fans are cheap and the usb jumper is not protected. Only used this for 3 months and both fans are making noise and starting to fail. The usb jumper is unprotected and easy to short out when plugging in a second USB drive. The poorly designed jumper has faild and no longer works. Using a USB type A male to male cable as a work around.

Not sure if it was the fans that interfered with the wifi. The identical case without fans didn't affect the wifi.

Well made and fits the RsPi 4 very well. Cools the Pi to around 36 deg under full load with the fans operating. Would be handy to have temp sensing to swithch the fans on only when required. The fans are quiet but needed a few drops of light m/c oil after a few hours use.

I really love this products. Keeps my raspberry pi 4 at 38°C to 42 °C during idle and at 62 °C during Plex stream to 3 devices. The only things that I don't like about the case is that it a little too big to fit in the official raspberry pi case. I also get very poor wifi reception. 0.23 Mbit/s down and 0.24 Mbit/s on the pi while I get 85.50 Mbit/s down and 5.77 Mbit/s up on my daily machine ( so much for open case design).Wish the fan speed was controllable!!

Trabaja perfectamente para mantener al Raspberry Pi fresco.No trae un "Riser" para los pins, que quedan inaccesibles por si necesitas usat un "hat"Este Riser no les costaría casi nada incluirlo y se necesita.Despues te lo venden muy caro.

It's not really a case, it's more of an aluminum-sandwich. The wire for the fans is either too long or too short depending on the orientation, and the fan blades rub against the casing. Overall it's somewhat functional I guess as it holds an RPi in between.