ACEMAGIC K5 (Ryzen 5 PRO 7640HS)

The ACEMAGIC K5 with the AMD Ryzen 5 PRO 7640HS is a 5-inch square desktop for office work, multi-monitor setups, and casual gaming, and its six Zen 4 cores make it a much faster machine than the Intel K5 builds that share its shell. Memory is 16GB of soldered LPDDR5 that the graphics also draw from, the single USB-C port runs at 10Gbps with no USB4, and there is one Ethernet jack. Other boxes with the same processor offer SO-DIMM slots and USB4, and the GMKtec M6 Ultra does so at a lower list price.

This is a separate machine from the ACEMAGIC Kron K5, which uses the same case and port layout around an Intel Wildcat Lake board (Core 3 304 or Core 5 320). The AMD build ships in gunmetal gray with a red power button, and ACEMAGIC sells both under the K5 name.

Pros and Cons

ACEMAGIC K5 (Ryzen 5 PRO 7640HS) Comparison Chart

	ACEMAGIC K5 (Ryzen 5 PRO 7640HS)
Price	List Price: $580.00 Amazon Prices: Loading prices...
Version	16GB/512GB/Ryzen 5 PRO 7640HS
Performance Rating	4.6
Operating System	Windows 11 Pro
Processor	Hexa-core 4.30 Ghz (max 5.00 Ghz) AMD Ryzen 5 PRO 7640HS
GPU	Integrated AMD Radeon 760M
RAM	16 GB LPDDR5 (16GB LPDDR5-5500, soldered)
Internal Storage	512 GB NVMe PCIe 3.0
Dimensions width x length x thickness	5.04 x 5.04 x 1.65 inches (128.02 x 128.02 x 41.91 mm)
Weight	1 lbs (0.45 kg)
WiFi	Wi-Fi 6 (802.11ax)
Bluetooth	Bluetooth 5.2
Ethernet	1 Ethernet port at 2.5 Gbps
HDMI	1 Full-Size HDMI Port
DisplayPort	1 DisplayPort (DP 1.4 (4K@60Hz); third 4K screen via USB-C)
VGA	No VGA Ports
USB Ports	6 USB 3, 1 USB-C USB-C 10Gbps with DP 1.4; 2x USB-A 10Gbps front, 4x USB-A 5Gbps rear
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, power adapter, HDMI cable, VESA bracket with screws, manual
Expandability	Memory is soldered. Two M.2 2280 slots, up to 8TB total, behind a tool-free lid.

Six Zen 4 cores in the K5 chassis

The Ryzen 5 PRO 7640HS is a six-core, twelve-thread Zen 4 chip built on a 4nm process, with a 4.3GHz base clock, a 5.0GHz boost, and 16MB of L3 cache. It belongs to AMD’s Ryzen 7040 “Phoenix” family from 2023, and the PRO badge adds AMD’s business management and security features to the same silicon as the consumer Ryzen 5 7640HS. The chip scores about 21,900 on PassMark’s CPU Mark. That is about 1.8 times the score of the Core 3 304 in the Intel K5 and about 1.4 times the Core 5 320, so this is the K5 to pick for compiling, large spreadsheets, photo work, or many browser tabs at once.

Phoenix is older than AMD’s Ryzen AI 300 and Ryzen AI 400 chips, but six Zen 4 cores still cover office and creative work in 2026, and the same processor sits in several current mini PCs. The Radeon 760M has eight RDNA 3 compute units, enough for esports titles and older games at 1080p with low to medium settings, while the Radeon 780M in the Ryzen 7 parts has twelve. ACEMAGIC’s own examples of playable games are League of Legends, Valorant, CS2, Dota 2, Minecraft, and Genshin Impact.

Memory is 16GB of LPDDR5 at 5500 MT/s, soldered to the board. AMD’s platform supports faster memory than that, and the integrated graphics take their share from the same 16GB, so a gaming session with a browser open in the background works inside a smaller pool than the headline figure. There is no upgrade path. Buyers who want 32GB or more later should look at a same-chip machine with SO-DIMM slots.

Ports, storage, and a 10Gbps USB-C port without USB4

The case measures about 5 x 5 x 1.7 inches and weighs about a pound. The front carries a USB-C port, two USB-A 3.2 Gen 2 ports at 10Gbps, a 3.5mm combo jack, and the red power button. The rear holds HDMI 2.0, DisplayPort 1.4, a 2.5GbE port, four USB-A 3.2 Gen 1 ports at 5Gbps, the barrel power input, and a lock slot. Air comes in through the bottom and leaves through vents on both sides. A VESA bracket ships in the box, and ACEMAGIC covers the machine for two years.

ACEMAGIC rates the USB-C port as USB 3.2 Gen 2 at 10Gbps with DisplayPort 1.4 output and power delivery to connected devices; the port on the Intel K5 runs at 20Gbps and accepts 100W of power input. Together with HDMI and DisplayPort, the USB-C port drives a third 4K display at 60Hz. The Ryzen 7040 platform supports USB4, but this board does not carry it, so external GPU docks and 40Gbps storage enclosures are out. The GMKtec M6 Ultra and BOSGAME P3 MIX use the same chip and include a USB4 port, two 2.5GbE ports, and Wi-Fi 6E.

The 512GB SSD is a PCIe 3.0 M.2 2280 drive, and a second M.2 2280 slot accepts PCIe 3.0 or 4.0 drives, with ACEMAGIC quoting up to 8TB across both. A latch releases the top cover without tools. ACEMAGIC rates the fan at 38dB or less in typical use and lists power consumption at 28W. Those are the maker’s figures.

A fast chip on a cut-down board

ACEMAGIC also sells the K5 case with low-power Intel chips, and this build puts a much faster processor into it. Same-chip machines from GMKtec and BOSGAME add SO-DIMM slots, USB4, a second 2.5GbE port, and Wi-Fi 6E, and the GMKtec M6 Ultra carries a lower list price. The K5 is the better fit when the small square case, the front USB-C display output, and ACEMAGIC’s two-year warranty matter more than those features. Compare it with other options in our Mini PC Comparison Chart.

Frequently Asked Questions