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MINISFORUM HX99G Ryzen 9 6900HX & RX 6600M Mini PC for $839 and up

The MINISFORUM HX99G is a powerful Mini PC powered by AMD Ryzen 9 6900HX processor and Radeon RX 6600M discrete graphics. Besides, the HX99G Mini PC is another desktop computer from the MINISFORUM Neptune series (after HX90G and HX80G). It is worth noting that the HX99G was first presented in November, but is already available for pre-order. Pricing starts at $839 (barebone version).

Minisforum HX99G Ryzen 9 6900HX and Radeon RX 6600M Neptune series Mini PC

Availability and price

MINISFORUM HX99G Neptune Series Mini PC you will find on pre-order at the official MINISFORUM website store. Prices start at $839 for the barebones version (without RAM and storage). Below you will find all the available variants. MINISFORUM says that orders will be shipped at the end of February.



Before the latest HX99G Neptune Series Mini PC came out, you might have had a look at the MINISFORUM HX90G beforehand. It is an almost identical Mini PC, but the differences are quite significant. We mean not only the processor but also the features of the device.

Minisforum HX99G vs HX90G

The Neptune HX99G looks practically identical to the HX90G. Measuring 205 x 203 x 69 mm (8.1″ x 8″ x 2.7″), both models feature 45 watts, 8-cores/16-threads graphics and the same laptop-class discrete GPU. However, it updates the Ryzen 9 5900HX with a faster Ryzen 9 6900HX and replaces the two DP ports with two speedier USB4 ports.  

R9 6900HX integrates all eight cores based on the Zen 3+ microarchitecture. It’s clocked at 3.3 (guaranteed base clock) to 4.9 GHz (max boost). Ryzen 6000 brings a slew of technological advancements, like support for USB 4, PCI-E Gen 4, DDR5-4800MT/s, WIFI 6 and Bluetooth 5.2.

The other AMD performance component is the RDNA 2 graphics architecture Radeon RX 6600M (GDDR6 8GB) with a TDP of up to 100 watts. Users can expect to utilize the full performance of this dedicated GPU to handle professional-class photo and video editing as well as content creation. Also, this GPU packs enough firepower to hit 60 frames per second at 1080p (depending on the specific game and settings).

HX99G Mini PC adopts the same cooling solution as the HX90G. It has 7- heat-pipes (3 for CPU and 4 for GPU) and dual fans inside. The computers use liquid metal on the CPU and GPU and have cases that incorporate carbon fiber. The excellent heat dissipation design enables the HX99G to maintain relatively low noise even under full load.

The MINISOFRUM HX99G offers two SODIMM slots for up to 64GB of total DDR5-4800 dual-channel memory. Besides the default M.2 2280 PCIe4.0 SSD (up to 2TB) slot, an extra M.2 2280 SSD slot (Support NGFF SATA or NVMe PCIe4.0 SSD) is also provided for expansion.

HX99G supports quad display: two 4K/60 Hz displays through HDMI 2.0 and two 8K/60 Hz displays through USB 4.

Other ports include:

  • Power Button
  • USB 3.2 Gen1 Type-C Port
  • Microphone Jack
  • Headphone Jack
  • USB 3.1 Gen1 Type-A Port
  • RJ45 2.5 Gigabit Ethernet Port
  • USB 3.2 Gen2 Type-A Port x 3
  • Power Supply

More details can be found on the product page.