Beelink SER9 Max H 255

The Beelink SER9 Max H 255 is a 5.31-inch aluminum box built around an AMD Ryzen 7 255, an 8-core, 16-thread chip that boosts to 4.9GHz. Its 10Gbps Ethernet port does more to define the machine than the processor does, and USB4 at 40Gbps, triple 4K output at 240Hz, and two DDR5 slots reaching 128GB fill in around it. Beelink sells one configuration, 32GB of memory with a 1TB drive, with the memory slots and the second NVMe slot left open for upgrades. Proxmox virtualization and 4K video editing both fall inside what it handles.

Networking and cooling win, the CPU does not

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Beelink SER9 Max H 255 Comparison Chart

	Beelink SER9 Max H 255
Price	List Price: $679 Amazon Prices: Check Price on Amazon
Version	32GB/1TB
Performance Rating	5.6
Operating System	Windows 11 Pro
Processor	Octa-core 3.80 Ghz (max 4.90 Ghz) AMD Ryzen 7 H 255
GPU	Integrated AMD Radeon 780M
RAM	32 GB
Internal Storage	1 TB
Dimensions width x length x thickness	5.31 x 5.31 x 1.76 inches (134.87 x 134.87 x 44.7 mm)
Weight	1.72 lbs (0.78 kg)
WiFi	Wi-Fi 6 (802.11ax)
Bluetooth	Bluetooth 5.2
Ethernet	1 Ethernet port at 10 Gbps
HDMI	1 HDMI Port
DisplayPort	1 DisplayPort
VGA	No VGA Ports
USB Ports	2 USB 2.0, 3 USB 3, 2 USB-C (1 USB4)
Thunderbolt Ports	No
OCuLink	No
Internal SATA Ports	No SATA ports
Card Reader	No Card Reader
Headphone Jack	combo
Fanless	No
VESA Mount	Yes
In the Box	Mini PC unit, power adapter (19V 6.32A), HDMI cable, VESA mounting bracket with screws, user manual
Expandability	2x DDR5 SO-DIMM slots (32GB installed, upgradable to 128GB), 2x M.2 2280 PCIe 4.0 x4 NVMe (supports up to 8TB total)

10-gigabit Ethernet, USB4, and room for 128GB of DDR5

The aluminum chassis measures 5.31 x 5.31 x 1.76 inches and weighs 1.72 pounds, light enough to hang behind a monitor on the included VESA bracket or sit out of the way on a desk. The rear panel carries 1x HDMI 2.1, 1x DisplayPort 2.1, 2x USB-A 2.0, and the 10Gbps Ethernet port. The front panel puts 2x USB-A 3.2 Gen2 (10Gbps), 1x USB-C 3.2 Gen2 (10Gbps), and a combo headphone jack within reach. The USB4 port runs at 40Gbps with Power Delivery and DisplayPort 1.4 Alt Mode, so an external GPU enclosure is an option when the integrated graphics run short.

In Geekbench 6 the AMD Ryzen 7 255 scores approximately 2,500 single-core and 12,000+ multi-core, which puts it in the same performance tier as the Ryzen 7940HS and 8945HS. The integrated Radeon 780M carries 12 RDNA 3 compute units at 2600MHz, enough for 1080p gaming and for hardware-encoded 4K video work. The MSC 2.0 vapor chamber cooling system lets the chip sustain its full 65W TDP, and Tek Syndicate measured around 46.5 dB under load while still describing the unit as relatively quiet. Idle draw sits at roughly 8.5W (VirtualizationHowto’s measurement), low enough to leave the machine running as an always-on home server.

The two DDR5 SO-DIMM slots come populated with 32GB at 5600MHz and take up to 128GB according to Beelink’s specifications. Two M.2 2280 PCIe 4.0 x4 NVMe slots hold up to 8TB between them, though there is no 2.5-inch SATA bay for an older drive. Wireless comes from an Intel AX200 with WiFi 6 and Bluetooth 5.2. The 10Gbps Ethernet port auto-downspeeds to 2.5Gbps when connected to slower switches, a feature that many dedicated 10G NICs lack.

Reviewer Insights

VirtualizationHowto: Proxmox runs clean, ESXi needs a driver

VirtualizationHowto’s review (Brandon Lee) focused on the SER9 Max’s home lab potential, and for him the 10-gigabit port was the headline: “10 gig is still not something you see a lot” in mini PCs, and he built the review around it. His Proxmox VE Server 9 testing confirmed the system runs virtualization workloads without issues, though he cautioned that “the Beelink SER9 Max has a Realtek NIC so VMware won’t install” without a workaround. He measured idle power draw “really good at around 8.5 watts,” found the unit “very quiet” under the redesigned MSC 2.0 vapor chamber cooler, and confirmed the 10-gig port “will down speed to 2.5 GbE” on slower infrastructure, a feature many 10G cards lack.

Tek Syndicate: quiet under load, bloated out of the box

Tek Syndicate tested the Ryzen 7 255 and described it as “very similar to the 8745HS,” with eight cores and sixteen threads landing it in performance “somewhere in between” that chip and a Ryzen 9. On the Radeon 780M, Cyberpunk 2077 ran around 46 fps at medium settings, which he framed as roughly as fast as most integrated graphics manage. He measured 46.5 dB under load (“relatively quiet, pleasant sound”) and called it scarily quiet at idle. His one sharp criticism was the out-of-box software: Beelink ships it with pre-installed bloatware (Wondershare and similar “ai slop stuff”), which left him recommending a clean Windows reinstall.

Buy it if the 10-gigabit port will get used

A home lab running Proxmox on this box gets a network link that keeps up with the storage behind it, and the same holds for pulling 4K footage off a NAS. The Ryzen 7 255 has the headroom to run those virtualization workloads at the same time, and the Radeon 780M covers casual gaming and hardware video encoding alongside them.

Coming from a Beelink SER8 or another Ryzen 8000-series system, the processor side gives back little, so the money only pays off when the 10Gbps port is doing work. The one build on offer lists at $679 and has sold nearer $615.

The Mini PC Comparison Chart lines the SER9 Max up against other machines in its performance class.

Frequently Asked Questions