HDPlex H3
Gaming PC


10.6×11.3×4.0 inches (LxWxH)

Includes an AMD Ryzen 5 CPU, 8 GB of RAM, 1 TB of SATA Solid State Storage, and Windows 10 Home


The HDPlex H3 is the best performing fanless heatsink-case mini pc, able to cool a wide variety of processors.  The case measures only 10.6×11.3×4.0 inches (LxWxH).  The H3 case is a heatsink that directs heat from the internal parts to the outside of the case through six heatpipes.  It is compatible with Mini ITX and Thin Mini ITX motherboards and processors with TDPs of up to 65W.  There is space for up to 4 2.5″ storage drives.  Due to its size, it is not compatible with graphics cards.  It is compatible with other PCIe x16 expansion cards.  The case has a 3.5 mm audio jack, 2 USB 3.0 ports, 2 USB 2.0 ports, and a power on/off button on its right side.  It is compatible with external power supplies.


This configuration includes an ASRock B450 ITX motherboard, an AMD Ryzen 5 processor, 8 GB of DDR4 RAM, 1 TB of SATA solid state storage, and Windows 10 Home.


The AMD Ryzen 5 3400G processor has the following specs:

# of Cores – 4

# of Threads – 8

Base Frequency/Core – 3.7 GHz

Max Frequency/Core – 4.2 GHz

Cache – 6 MB

TDP – 65 W

Integrated Graphics – Radeon RX Vega 11

Passmark Benchmark – TBD

Passmark Graphics Benchmark – 2,268


Rear Ports:

1 DC Power Connector

2 USB 2.0 Ports

1 PS/2 Mouse/Keyboard Port

1 DisplayPort

1 HDMI Port

1 USB 3.1 Gen 2 Type A Port

1 USB 3.1 Gen 2 Type C Port

1 RJ45 Port w/ Intel I211AT

2 USB 3.1 Gen 1 Ports

5 Analog Audio Jacks for 7.1 Channel Audio w/ Realtek ALC1220

1 Optical Audio Out

2 Wi-Fi Antenna Ports


ASRock B450 Gaming-ITX Motherboard:

The ASRock Fatal1ty B450 Gaming-ITX/ac is a high-end B450 mini-ITX motherboard, and there are not that many of them. ASRock added in a pre-driver to help with the HDMI 2.0 port, as well as WIFI so you can use the computer anywhere and included the high-end ALC1220 audio codec with full audio ports.

The VRM has a high component count, and together with the 2oz copper PCB, decent inductors, and a decent heat sink, it should keep your CPU well fed and not throttling. The motherboard also has both main types of RGB LED headers, a neutral color theme, and has that single header for AMD RGB LED heat sink fans. If you are looking for a decently loaded B450 motherboard, give the B450 Gaming-ITX/ac a look.

Additional information

Weight 12.5 lbs
Dimensions 10.6 × 11.3 × 4.0 in