Kamrui

AM21

CPU r9 6900HX

GPU RDNA2 680M

Max RAM 64GB

Drives 2

From $380

Seller Amazon

The Kamrui AM21 is a mini PC powered by the AMD r9 6900HX (Zen 3+ gen). It features 8 performance cores and 16 threads and a soldered CPU. Graphics are handled by the integrated AMD RDNA2 680M. Supports up to 64GB of RAM across 2 slots at 4800 MT/s. Storage capacity of up to 2 drives including 2 NVMe. Connectivity includes USB4 40Gbps. Networking features 2 Ethernet ports (up to 2.5G). Dimensions: 130 × 130 × 51mm (0.86L). Uses a Brick PSU (90W), 45W TDP.

CPU & Performance

CPUr9 6900HX

GenerationZen 3+

P-Cores8

Threads16

Single-core66

Multi-core36

Socket0

GPU

GPURDNA2 680M

Discrete GPUNo

Integrated GPUYes

eGPU supportNo

RAM

Max RAM64GB

RAM slots2

Max speed4800 MT/s

ECC supportNo

Storage

Max drives2

NVMe slots2

Gen3 x42

SD cardNo

Ports & Connectivity

USB4 40Gbps1

Max displays4

Network

Max Ethernet2G

2.5G ports1

1G ports1

vProN

Physical

Dimensions130 × 130 × 51 mm

Volume0.86L

Fan size80mm

Power

TDP45W

PSU typeBrick

PSU90W

Pricing

16GB / 512GB$380

Additional

Recommended for productivity, software development, multitasking, media use, light gaming, larger multitasking workloads, and very small desk setups. Consider Kamrui AM21 if you want a ultra-compact mini PC built around its listed AMD r9 6900HX processor and AMD RDNA2 680M integrated GPU. It is less suitable for heavy gaming than models with a discrete GPU, but the listed expansion and integrated graphics options make it flexible for everyday workloads.

Kamrui AM21 features AMD r9 6900HX with AMD RDNA2 680M integrated GPU, offering 1× 2.5G Ethernet and 1× 1G Ethernet and USB4. CPU details include Zen 3+ CPU generation, 8 performance cores, and 16 threads. Memory support includes up to 64GB RAM across 2 slots at 4800 MT/s. Storage support includes up to 2 storage drives including 2 NVMe SSD slots and 2× PCIe Gen3 x4 NVMe. Display support includes support for up to 4 displays. Port connectivity includes 1× USB4 40Gbps and full-function USB-C with PD/video/data at 100W. Networking includes 1× 2.5G Ethernet and 1× 1G Ethernet. Physical design includes a 130 × 130 × 51 mm chassis (0.86L). Cooling information lists 80 mm main fan. Power information lists Brick power supply rated at 90W and 45W TDP. Lifecycle information lists release date listed as 23-Jan-2025.

The overall score is not populated for Kamrui AM21, so this model should be evaluated by the listed hardware specifications rather than by a ranked dataset position.

Verdict

Best for

office productivity, software development, 4K media playback, multitasking, developer workloads.

Avoid if

you need modern AAA gaming or sustained GPU rendering; warranty coverage is important to you.

Alternatives

AOOSTAR T8 Plus / M8S — better value at comparable performance
GMKtec/Morefine Nucbox K11 4090M — higher performance ceiling
CWWK/Topton 1245U 8x2.5G — stronger wired networking for homelab use

Review

The Kamrui AM21 is a ultra-compact mini PC built around AMD r9 6900HX and AMD RDNA2 680M integrated graphics. With a listed price around $380, it is aimed at buyers looking for office productivity, software development, 4K media playback, multitasking, developer workloads. The core spec sheet is solid for its class: up to 64GB RAM across 2 slots at 4800 MT/s, up to 2 drives, including 2 NVMe slots (2 PCIe 3.0 x4 NVMe), 1×2.5GbE + 1×1GbE, and 1 USB4 40Gbps, USB-C PD up to 100W. Because the overall score is not populated, this model is best evaluated by its listed specifications, price, and feature mix rather than a single rank. The listed release date is 23-Jan-2025. The main reason to pause is fit: avoid it if you need modern AAA gaming or sustained GPU rendering; warranty coverage is important to you. Overall, the Kamrui AM21 makes the most sense when its CPU/GPU balance, port selection, and expansion profile match your workload; otherwise, compare it against similarly priced mini PCs with better networking, quieter cooling, or stronger upgrade paths.