2.5 liter FA65G mini PC powered by AMD Ryzen 7 9800X3D and rare RTX 4080/5000 Ada MXM dGPUs demoed by FEVM

FEVM is a relatively new Chinese mini PC maker that is mostly known for borrowing the chassis design from Apple’s Mac Studio and adapting it to desktop-grade X86 processors combined with mobile dGPUs in MXM form-factor. The company previously managed to fit Raptor Lake Refresh-S processors together with mid-range RTX 4060 mobile GPUs in 2.5 liter cases, but the latest FA65G model takes things to another level as it manages to fit desktop-grade Ryzen 9000X3D processors combined with RTX 4080 mobile and even RTX 5000 Ada mobile GPUs.

The modified Mac Studio chassis on the new FA65G from FEVM measures 167.5 x 167.5 x 96 mm, weighs 1.85 kg and includes a B650-based mini-ITX motherboard with a desktop-grade AM5 socket compatible with the latest Ryzen 9000X3D processors. FEVM offers builds powered by the Ryzen 7 9800X3D, but users could probably upgrade it with a Ryzen 9 9900X3D or Ryzen 9 9950X3D, as suggested by the promotional video. The desktop-grade AM5 socket actually requires a separate custom card and a custom cooler installed on top of the motherboard default socket. FEVM allows different TDP configurations for the processor, limiting maximum power between 100W and 65 W.

On the GPU side, FEVM was able to adapt MXM versions of the RTX 4080 and RTX 5000 Ada laptop GPUs that are not that easy to find these days. The MXM GPUs is oriented like a desktop GPU and even feature a custom cooling solution with a hefty radiator integrating four heat-pipes, which is cooled by two fans. In order to power these GPUs, FEVM also includes a 330W adapter that weighs ~530g.

Port selection is similar to what a Mac Studio offers, with USB4, USB 2.0, USB-A 3.2 Gen 1, full-size SD card reader and audio jack in front, plus dual 2.5 GbE NICs, dual HDMI 2.1 + dual DP video outs, 2x USB-A 3.2 Gen, 2x USB 2.0 and a USB-C 3.2 Gen 2 on the back. There are two slots for Wi-Fi antennae as well.

Storage is handled via 2x M.2 2280 slots with PCIe 4.0 X4 specs, while the system supports up to 128 GB DDR5-6400 RAM via two SO-DIMM slots. These, together with the Wi-Fi module, can be easily accessed and upgraded if necessary by removing the bottom lid.

As far as performance goes, FEVM’s internal tests show that the RTX 4080 LP GPU in MXM form-factor limited to 115 W is almost as fast as a desktop RTX 3080 or an RTX 4070 and slightly faster than the new RTX 5060 Ti. FEVM also shows that the MXM card is slightly faster than an external RTX 4090 LP connected through USB4.

A Ryzen 9800X3D version limited to 90 W TDP tops at 86° C in stress tests and the CPU fan ramps up to 41 dB. When both the CPU and GPU are stressed to the maximum, the CPU reaches 90° C. while the GPU tops at 74.3° C, with total system noise going up to 47.3 dB. At 100 W TDP, the CPU can heat up to 95° C, which is still within TJ MAX. FEVM claims that in typical gaming scenarios, the CPU may top at 80° C, while the GPU stays sub-70° C and system noise goes up to 45 dB.

No pricing or availability info for now, but given the current scarcity of the MXM GPUs, an RTX 4080 LP + Ryzen 7 9800X3D version would easily go for above $2,000. As with most high-end models, the FA65G will most likely be available only in China at first. Western users could probably risk it with an Aliexpress purchase. Keep in mind that the MXM GPUs are quite rare and FEVM might not replace them if they fail.