Beelink SER9 MAX vs MSI Cubi NUC AI+ 3MG
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Beelink SER9 MAX
Ryzen 7 H 255 / 64GB DDR5-5600 / 1TB SSD / Windows 11 Pro / Space Gray / US adapter
MSI Cubi NUC AI+ 3MG
Core Ultra 9 386H / 16GB DDR5 / 1TB SSD / Windows 11 Pro
Amazon results may include other models. Verify the processor, memory, storage, and seller before buying.
| Memory | ||
|---|---|---|
| Storage |
1Is it fast for normal work?
Beelink SER9 MAX
Not available
MSI Cubi NUC AI+ 3MG
Not available
2Can it handle sustained work?
Beelink SER9 MAX
Not available
MSI Cubi NUC AI+ 3MG
Not available
3Can it game?
Beelink SER9 MAX
Not available
MSI Cubi NUC AI+ 3MG
Not available
4Is it loud or hot?
Beelink SER9 MAX
Not available
MSI Cubi NUC AI+ 3MG
Not available
5How much electricity does it use?
Beelink SER9 MAX
Not available
MSI Cubi NUC AI+ 3MG
Not available
6Can I upgrade and connect everything?
Beelink SER9 MAX
-
USB4 Yes
-
Upgradeable storage Yes
-
Bottom-cover access
ETA PRIME demonstrates removal of the bottom cover after undoing four screws.
ETA PRIME · 2:05 -
Memory is upgradeable Not available
-
Storage is upgradeable Not available
-
Security lock also restricts bottom access Not available
MSI Cubi NUC AI+ 3MG
-
USB4 Not available
-
Upgradeable storage Not available
-
Bottom-cover access Not available
-
Memory is upgradeable Yes
-
Storage is upgradeable Yes
-
Security lock also restricts bottom access
Level1Techs showed that the Kensington lock opening also secures the bottom cover, restricting access to memory and storage. The reviewed unit had 32GB memory rather than this SKU’s 16GB.
Level1Techs · 1:13
7Is it good value?
Beelink SER9 MAX
Not available
MSI Cubi NUC AI+ 3MG
Not available
8Will it be dependable?
Beelink SER9 MAX
-
Proxmox installation caveat
VirtualizationHowto encountered a blinking Proxmox VE 9 installer while using a TinyPilot remote KVM. He installed VE 8 and upgraded to VE 9, and cautioned that the problem could be specific to his setup.
VirtualizationHowto · 11:24 -
Network boot stack was disabled by default Not available
MSI Cubi NUC AI+ 3MG
-
Proxmox installation caveat Not available
-
Network boot stack was disabled by default
Level1Techs showed the UEFI network stack disabled in BIOS EB211IMS.1A20 and explained that it must be enabled for network boot. Firmware defaults can change.
Level1Techs · 8:17
References
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Beelink. SER9 MAX H255/H260/H350 specifications and configuration selector. Product page. Accessed .
Configuration: Ryzen 7 H 255 / 64GB DDR5-5600 / 1TB SSD / Windows 11 Pro / Space Gray / US adapter
Disclosure: Manufacturer specifications; performance has not been independently measured.
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ETA PRIME. SER9 MAX Mini PC First Look! Ryzen 7 H 255 Quiet, Cool, and Powerful. Video review. . Accessed .
Configuration: SER9 MAX H255 with 1TB SSD; installed RAM capacity not verified.
Disclosure: Affiliate links and software-key promotion are disclosed; unit acquisition was not established.
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VirtualizationHowto. Beelink SER9 Max Review and Proxmox 10 Gig Mini PC Giveaway. Video review. . Accessed .
Configuration: SER9 MAX H255 running Proxmox; RAM capacity and firmware not established. TinyPilot remote KVM used for installation.
Disclosure: Beelink supplied the unit; the reviewer says the review was unpaid. Video includes a Nakivo sponsor segment.
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MSI. Cubi NUC AI+ 3MG US SKU specifications. Product page. Accessed .
Configuration: Core Ultra 9 386H / 16GB DDR5 / 1TB SSD / Windows 11 Pro
Disclosure: Manufacturer specifications; no MiniPCBench measurements.
-
Level1Techs. Finally! Panther Lake! A Quick Look at the Cubi NUC AI+ 3MG. Video review. . Accessed .
Configuration: Core Ultra 9 386H / 32GB DDR5-5600 / 1TB Phison SSD / Windows 11 Pro. BIOS EB211IMS.1A20 dated March 4, 2026 shown. Power profile unconfirmed.
Disclosure: Reviewer thanks MSI for access to the hardware; whether the unit was loaned or retained is unclear. Affiliate link disclosed.
Value for money
No value comparison is available. It requires eligible test scores and at least four current price observations in seven days.
Specification differences
Differences supported by the listed manufacturer specifications
Higher listed specifications for Beelink SER9 MAX
- Provides 2 storage slots versus 1
Higher listed specifications for MSI Cubi NUC AI+ 3MG
Verified specifications
Manufacturer-sourced specifications and current testing status
Processor
| Specification | SER9 MAX | Cubi NUC AI+ 3MG |
|---|---|---|
| CPU | AMD Ryzen 7 H 255 | Intel Core Ultra 9 386H |
| Cores / threads | 8 / 16 | 16 / 16 |
| Processor default TDP | Not disclosed | Not disclosed |
| Integrated graphics | AMD Radeon 780M | Intel Graphics |
Memory and storage
| Specification | SER9 MAX | Cubi NUC AI+ 3MG |
|---|---|---|
| Memory type | DDR5-5600 | DDR5 SO-DIMM |
| Maximum memory | Not published | 96 GB |
| Upgradeable memory | Not published | Yes |
| Storage slots | 2 | 1 |
Connectivity
| Specification | SER9 MAX | Cubi NUC AI+ 3MG |
|---|---|---|
| Ethernet | 1 × 10Gb Ethernet | 2 x Intel I226-V 2.5GbE |
| Wireless | Intel AX200 Wi-Fi 6; Bluetooth 5.2 | Wi-Fi 7; adapter model and Bluetooth version unconfirmed for this SKU |
| USB4 | Yes | Yes |
| Thunderbolt | Not published | Yes |
Size and price
| Specification | SER9 MAX | Cubi NUC AI+ 3MG |
|---|---|---|
| Enclosure volume | Not published | 0.51 liters |
| List price | Not published | Not published |
| Product class | Not assigned | Not assigned |