AOOSTAR GEM12 MAX

Published on May 24, 2026

The AOOSTAR GEM12 MAX is a 5.12-inch square mini PC built around AMD’s Ryzen 7 8745HS, an 8-core, 16-thread Zen 4 chip with Radeon 780M integrated graphics. The black chassis has a perforated mesh top and a dual-fan cooling system, and AOOSTAR (a brand also known as Tianbei) fits it with the connectivity a desktop replacement needs: a dedicated OCuLink port for external GPU expansion, two USB4 ports, and dual 2.5 Gigabit Ethernet. It ships in two forms. The barebone unit leaves the DDR5 memory and NVMe storage to you, and the configured model arrives with 24GB of RAM and a 1TB SSD. Either build takes up to 128GB of DDR5-5600 memory and up to 8TB of storage across its two M.2 slots, and three BIOS performance modes let the chip run to a 70-watt sustained target.

Pros and cons

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AOOSTAR GEM12 MAX Comparison Chart

	AOOSTAR GEM12 MAX	AOOSTAR GEM12 MAX
Price	List Price: $299.00 Amazon Prices: Check Price on Amazon	List Price: $579.00 Amazon Prices: Loading prices...
Version	Barebone/AMD Ryzen 7 8745HS	24GB/1TB/AMD Ryzen 7 8745HS
Performance Rating	8.4	8.9
Operating System	--	Windows 11 Pro
Processor	Octa-core 3.80 Ghz (max 4.90 Ghz) AMD Ryzen 7 8745HS	Octa-core 3.80 Ghz (max 4.90 Ghz) AMD Ryzen 7 8745HS
GPU	Integrated AMD Radeon 780M	Integrated AMD Radeon 780M
RAM	0 GB DDR5 SO-DIMM, 2-channel (No RAM or SSD included)	24 GB DDR5 SO-DIMM, 2-channel
Internal Storage	0 GB NVMe SSD	1 TB NVMe SSD
Dimensions width x length x thickness	5.12 x 5.12 x 2.36 inches (130.05 x 130.05 x 59.94 mm)	5.12 x 5.12 x 2.36 inches (130.05 x 130.05 x 59.94 mm)
Weight	1.45 lbs (0.66 kg)	1.45 lbs (0.66 kg)
WiFi	Wi-Fi 6 (802.11ax)	Wi-Fi 6 (802.11ax)
Bluetooth	Bluetooth 5.2	Bluetooth 5.2
Ethernet	2 Ethernet ports at 2.5 Gbps	2 Ethernet ports at 2.5 Gbps
HDMI	1 Full-Size HDMI Port	1 Full-Size HDMI Port
DisplayPort	1 DisplayPort (DP 1.4)	1 DisplayPort (DP 1.4)
VGA	No VGA Ports	No VGA Ports
USB Ports	2 USB 2.0, 2 USB 3, 2 USB-C (2 USB4) Front: 2x USB-A 3.2 Gen 2, 1x USB4 Type-C, OCuLink. Rear: 1x USB4 Type-C, 2x USB-A 2.0	2 USB 2.0, 2 USB 3, 2 USB-C (2 USB4) Front: 2x USB-A 3.2 Gen 2, 1x USB4 Type-C, OCuLink. Rear: 1x USB4 Type-C, 2x USB-A 2.0
Thunderbolt Ports	No	No
OCuLink	PCIe 4.0 x4 (64Gbps) for eGPU	PCIe 4.0 x4 (64Gbps) for eGPU
Internal SATA Ports	No SATA ports	No SATA ports
Card Reader	No Card Reader	No Card Reader
Headphone Jack	combo	combo
Fanless	No	No
VESA Mount	Yes	Yes
In the Box	Mini PC, 120W GaN power adapter, HDMI cable, VESA bracket and screws, M.2 SSD heatsinks, manual	Mini PC, 120W GaN power adapter, HDMI cable, VESA bracket and screws, M.2 SSD heatsinks, manual
Expandability	2x DDR5-5600 SODIMM (up to 128GB), 2x M.2 2280 NVMe PCIe 4.0, OCuLink for eGPU	2x DDR5-5600 SODIMM (up to 128GB), 2x M.2 2280 NVMe PCIe 4.0, OCuLink for eGPU

Workstation ports in a 5.12-inch chassis, 1080p graphics without an eGPU

The GEM12 MAX measures roughly 5.12 x 5.12 x 2.36 inches and weighs about 1.45 pounds, small enough to tuck behind a monitor on the included VESA bracket. The front panel carries a 3.5mm combo audio jack, two USB 3.2 Gen 2 Type-A ports, a USB4 Type-C port, and the OCuLink connector, while the rear adds a second USB4 Type-C port, two USB 2.0 Type-A ports, HDMI, a DisplayPort 1.4 output, the dual 2.5GbE jacks, and a dedicated DC power input. That DC barrel jack is a meaningful upgrade over the plain GEM12: on the earlier model the power supply occupied one of the USB4 ports, whereas the MAX keeps both USB-C ports free for data and displays. Inside, a dual-fan layout (including a large 70mm bottom fan) and three selectable BIOS performance modes let the chip run up to a 70-watt sustained power target.

The Ryzen 7 8745HS is an 8-core, 16-thread part that boosts to 4.9GHz and scores roughly 29,289 on PassMark’s multi-thread benchmark. It is the same silicon as the better-known Ryzen 7 8845HS minus the Ryzen AI NPU, so CPU and Radeon 780M graphics performance are nearly identical while the price tends to run lower. That is enough for software development with dozens of browser tabs open, 4K video editing timelines, and heavy multitasking across creative apps. The 780M handles 1080p gaming at medium settings, and 1440p is where the OCuLink port comes in.

The OCuLink connector provides a PCIe 4.0 x4 link at 64Gbps, a more stable and higher-bandwidth path to an external GPU dock than USB4 or Thunderbolt can manage. Paired with a desktop graphics card, the box handles gaming and rendering work the 780M cannot reach on its own. The two USB4 ports each deliver 40Gbps and DisplayPort Alt Mode for additional monitors alongside the HDMI and DisplayPort outputs, and the dual Intel 2.5GbE ports support home-lab duty running Proxmox, pfSense, or a NAS front end. Wireless duties fall to a WiFi 6 (802.11ax) module with Bluetooth 5.2; teardowns identify an Intel AX200 card, which is user-replaceable in its standard M.2 slot if you want to move to WiFi 7 later.

Reviewer Insights

Tech Brothers: two NVMe slots are rare at this size

Tech Brothers ran the GEM12 MAX as their primary computer for more than three months and came away calling it the most powerful mini PC they had tested on the channel. Their review highlights the rarity of two NVMe slots in this form factor, the dual USB4 ports clocking transfer speeds up to 40Gbps, and a cooling system that stayed quiet in the 40 to 46 decibel range. They were comfortable describing it as a small gaming PC thanks to the OCuLink option, with the main caveat being that audio processing inside video-editing software felt slower than the rest of the workload.

TexnoPlaneta’s teardown praised the cooling and faulted the chassis

In a detailed Russian-language teardown, TexnoPlaneta was impressed enough to replace a full-size desktop with the GEM12 MAX. The reviewer praised the dual-fan cooling (singling out the large, quiet 70mm bottom fan) and said the system can be made effectively silent with tuning. Build quality, the Intel AX200 WiFi card, dual Intel 2.5G Ethernet, and the included compact 120W GaN power supply all drew praise. The reviewer also found the chassis hard to take apart without scuffing the finish, and the factory thermal paste let the CPU reach about 89 Celsius and throttle under extreme synthetic loads, which a liquid-metal repaste solved.

Customer Reviews

Across 19 ratings on Amazon, the AOOSTAR GEM12 MAX averages 4.8 stars, with 87 percent of ratings at five stars and a single one-star rating in the mix. The recurring praise from verified buyers centers on the Ryzen CPU’s speed, quiet and cool operation, and value relative to a full desktop build. Laszlo H, a verified buyer, wrote: “the CPU is very fast. I love these mini PCs, the ones with Ryzens anyway. Doesn’t use much power, pretty quiet, and you can use it for a server, a desktop, etc.” Verified buyer Stephen Hunter, on his second AOOSTAR purchase, called it a “Great mini pc. Good quality and very quiet and cool running. Performance for its class is exceptional and the price was much better than competition.” Several reviewers note this is a barebones unit; verified buyer ahmed wrote it “Worked out of the box and just add ram and SSD to it.” Gaming on the integrated Radeon 780M comes up repeatedly, with Dave S. reporting in a verified review that gaming temperatures averaged “70-72” degrees Celsius and peaked at “81” under an all-day stress test.

Three buyers raised caveats. Verified buyer alberto altahona, who rated it four stars, noted in Spanish that the device tends to run hot (“el dispositivo tiende a calentarse mucho”). Verified buyer Manuel, who is satisfied so far, flagged secondhand concerns he had read online about the company’s technical support and pending returns, which he has not personally experienced. There is also one one-star verified rating from David V., though its short text only references the seller lowering the price and does not explain the low score, so it is hard to read a specific complaint from it. Read more owner reviews on Amazon.

A quiet productivity box with room for an external GPU

The Ryzen 7 8745HS handles development, content creation, and everyday multitasking. Its connectivity covers OCuLink for an external GPU, two USB4 ports, dual 2.5GbE, and a dedicated DC jack that keeps both USB4 ports free for data and displays. Buyers who do not need an eGPU on day one can add one later without replacing anything else in the machine.

The barebone model asks you to source your own RAM and SSD, the chassis is hard to open, and anyone running sustained synthetic loads may want to repaste the CPU to tame thermals. The missing Ryzen AI NPU matters mainly for local-AI work. For shoppers weighing this against other options, see our Mini PC Comparison Chart, and if a built-in screen appeals, compare it with the AOOSTAR G-FLIP, which uses a similar AMD platform with a flip-up display.

Frequently Asked Questions