Juno is an ITX, small form factor computer based on the Intel Z370 chipset for its simplicity, reliability and ultra-high availability in a small package for use as an OPNsense firewall router. It was designed and built on the ROG Strix Z370-I Gaming motherboard for its space efficiency and simplicity. It is powered by an 8-core, 16-thread Intel Core i9-9900KS with an all-core overclock of 5.0GHz and ring overclock of 4.5GHz.

It features 16GB of Corsair Vengeance (CMH16GX4M2E3200C16W) memory allowing for an overclock of 3800MT/s C20 in 1:2 mode @1.35v (20-26-26-52) with completely fine tuned sub-timings and turn around timings for high bandwidth, low latency and temperature focused reliability.

For the OPNsense operating system, it uses a Western Digital Black SN850 1TB NVMe SSD operating at a limited 3.5GB/sec per PCIe 3.0 specification. I went with this SSD so that if the hardware is ever to be upgraded in the near future, it will be capable of utilizing PCIe generation 4 speeds.

Airflow is handled by two Noctua NF-A14x25 G2 used to cool the 25GbE Intel E810-XXVDA4 Network card as well as circulate air throughout the inside of the case. For the CPU cooling, I opted to use the low profile Thermalright AXP120-X67 paired with a Noctua NF-A12x15 fan. This setup allows cold air to be drawn from the intake vents on both sides of the case, through the computer's internals and then exhausted out of the opposite sides with minimal chance for hot air to recirculate through the system.

Juno aims to be an ultra-high efficiency 8-core 25GbE firewall router designed for ultra-high availability.