In short: Today’s mini PCs are a far cry from the underpowered desktop machines they once were. Just take a look at Minisforum’s Neptune HX90G, which packs a high-end AMD or Intel CPU, Navi 23-based GPU, massive heatsink, and even pre-applied liquid metal all into a tiny chassis. 2.8 L.
Minisforum announced the Neptune HX90G earlier this month, confirming that a model with a Ryzen 9 5900HX would arrive first, followed by versions with Ryzen 9 6900HX and Intel Alder Lake processors.
It appears that GPUs of all variants are limited to the Radeon RX 6650M, a Navi 23-based graphics card with 8GB of VRAM and 1,792 cores (28 compute units) which is also an option in the HP Omen 16. The Neptune HX90G factor’s small form factor means that the graphics are soldered to the PCB, so it cannot be replaced or upgraded.
The promotional video for the Neptune HX90G suggests that Minisforum makes sure the components stay cool in its small case. The vast heatsink has two fans that sit above the CPU and GPU, and there are seven heat pipes split between the two components.
According to Minisforum, the cooler and liquid metal allow heat dissipation without loss of performance from the CPU and GPU operating at 100% load: 50W and 100W, respectively. The company has confirmed that the mini PC will come with a 260W power adapter.
As with similar mini PCs, the Neptune HX90G comes without RAM or storage. You get two SODIMM slots supporting up to 32GB of dual-channel DDR4 and two PCIe 3.0 slots for up to 1TB of storage. It also has two HDMI ports, two DisplayPort outputs, an audio jack, a 2.5Gbps Ethernet port, three USB 3.2 Gen 2, one USB 3.1 Gen 1, and one USB Type-C. No word yet on pricing.
In March, Gigabyte launched what it called the “most powerful” mini PC in the world: the Brix Extreme. It uses Intel’s latest Alder Lake mobile processors and has PCIe Gen 4 connectivity, but lacks a dedicated GPU, relying solely on Intel Iris Xe graphics.