We started to read about Khadas VIM3 in May of this year as an Amlogic S922X development board with an M.2 socket for NVMe SSD, and 802.11ac WiFi 5 & Bluetooth 5.0 wireless module. Eventually, Shenzhen Wesion decided to change the processor to Amlogic A311D before the launch last month, since it does not cost much more, but includes a 5.0 TOPS neural processing engine.
The company has sent me a Khadas VIM3 kit for evaluation and review. Before going through the software part, and especially the tools for the NPU which will be one of the highlights of the board, I’ll check out what I received today, and show how to assemble the kit.
The package is rather boring…
But what’s really important is what’s inside…
We’ve got an enclosure, a smaller package with the board itself, a USB-C power supply, a thermal pad + heatsink kit, and an IR remote control.
The USB-C power supply supports USB PD (Power Delivery) with 5V/3A, 9V/2.67A, and 12V/2A modes.
That’s the top of the board with Amlogic A311D processor, memory, storage, and other components and ports listed in the specifications. The storage device is KLMAG1JETD-B041 eMMC flash with 16GB capacity, meaning I got Khadas VIM3 Basic with 2GB RAM as well. Two u.FL antennas for the wireless module are also included with the board.
The bottom of the board includes the M.2 NVMe socket, MIPI CSI for a camera, as well as MIPI DSI and TP (Touch Panel) for connecting a touchscreen display.
Khadas VIM3 is about the same size as Raspberry Pi 4 model B, but obviously, the arrangement of the ports is completely different.
The case comes in two parts and includes screws as well as a screwdriver. If you’re wondering why a screwdriver is included, the reason will come to light soon enough: the design relies on weird triangular head screws.
The first step is to pell of the film on the thermal pad, and install it on VIM3 board. At first, I thought it was a good idea to cover as much “skin” as possible.
The bottom of the case has mounting holes that align with the through holes in the board and the heatsink. So we can mount those together, moving the antenna on top, and tighten everything with the triangular head screwdriver using the 4 longer screws from the heatsink + thermal pad set.
Now I was getting ready for the last and easiest step to tighten the top cover… Except it would not fit…
It turns out Khadas enclosure is somewhat modular. So you can takeout a plastic part to expose the 40-pin GPIO header to the outside world. You can also remove one of the top pieces by loosening the two screws at the top, and give – barely – enough height space for the heatsink.
I tightened the four long screws from the case kit, and that’s the final result.
Khadas VIM3 Basic normally sells for $99.99, but there’s a $20 coupon valid until July 22. Use Public_VIM3_Basic or Public_VIM3_Pro depending on the board you plan to purchase. If you’d like to get the exact kit featured in this review, you’ll need to add $9.90 for the 24W USB-C power adapter, $3.90 for the USB-C cable, $9.90 for the heatsink + thermal pad, $14.90 for the DIY case, and $4.20 for the IR remote control. The total would be $122.70 including free shipping.