First seen last month, Radxa has officially launched the Cubie A7A, a credit card–sized SBC built on the Allwinner A733 SoC. Designed for high-performance computing, AI inference, and multimedia, it combines an octa-core CPU, Imagination GPU, and NPU with flexible storage and connectivity for edge and embedded applications.

The Allwinner A733 is built on a 12nm process and uses a big.LITTLE architecture combining two Arm Cortex-A76 performance cores at up to 2.0 GHz with six Cortex-A55 efficiency cores at up to 1.8 GHz. Graphics are handled by an Imagination BXM-4-64 GPU supporting Vulkan 1.3, OpenGL ES 3.2, and OpenCL 3.0.

For AI workloads, the Vivante VIP9000 NPU delivers up to 3 TOPS at INT8, with support for mixed-precision operations across INT8, INT16, FP16, and FP32. A RISC-V XuanTie E902 coprocessor running at 200 MHz is also included for real-time and low-power tasks under FreeRTOS.

Allwinner A733 Block Diagram
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Memory options range from 2 GB to 16 GB of LPDDR5, with storage provided through a microSD slot, an eMMC and UFS combo connector, and a PCIe Gen3 interface that supports NVMe SSD expansion. A small onboard SPI flash is used for the bootloader. These options make the board adaptable for both lightweight prototyping and demanding deployments requiring high-capacity storage.

Cubie A7A Top View
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Multimedia capabilities include HDMI 2.0 video output up to 4K at 60 frames per second and dual-display support via HDMI and MIPI DSI. On the input side, a four-lane MIPI CSI interface can be configured as a single four-lane or dual two-lane setup, enabling the use of high-resolution camera modules.

Hardware codecs allow 4K H.264 and H.265 encoding at 30 frames per second and 8K video decoding for H.265, VP9, and AVS2, along with 4K H.264 playback.

Cubie A7A Bottom View
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Connectivity is equally comprehensive. The Cubie A7A integrates Wi-Fi 6 and Bluetooth 5.4 with an external antenna connector, a Gigabit Ethernet port with support for IEEE 802.3af/at Power over Ethernet via an optional HAT, and multiple USB ports, including one USB 3.1 OTG, three USB 2.0 hosts, and a USB-C port for both data and power.

A 40-pin GPIO header provides access to common interfaces such as UART, I²C, SPI, PWM, and I²S. Additional expansion headers support features like fan control, PCIe peripherals, and PoE modules.

Cubie A7A Connectivity
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Measuring 85 by 56 millimeters, the Cubie A7A follows a compact form factor similar to other SBCs while incorporating long-term availability commitments, with Radxa guaranteeing supply through 2034.

The board is supported by Debian Linux, Android, and Buildroot-based distributions, with documentation and examples available through Radxa’s developer portal and community forums.

Cubie A7A PoE Options
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Radxa also highlights an ecosystem of compatible accessories, including camera modules up to 13 megapixels, touchscreen displays, SATA expansion boards, PoE modules, and heatsinks.

Specifications for the Radxa Cubie A7A:

• Processor / SoC:
  • Allwinner A733 SoC
  • 2× Arm Cortex-A76 up to 2.0 GHz
  • 6× Arm Cortex-A55 up to 1.8 GHz
  • Alibaba XuanTie E902 RISC-V coprocessor
• GPU:
  • Imagination BXM-4-64 MC1
• NPU:
  • 3 TOPS AI accelerator
• Memory / Storage:
  • up to 16 GB LPDDR5 RAM
  • 1× SPI Flash for bootloader
  • 1× MicroSD card slot
  • 1× eMMC & UFS combo connector
  • 1× PCIe Gen3.0 (1-lane, supports NVMe SSD)
• Video Output:
  • 1× HDMI 2.0 (up to 4K@60fps)
  • 1× 4-lane MIPI DSI display interface
• Video Input:
  • 1× MIPI CSI interface
  • Configurable as 1× 4-lane or 2× 2-lane
• Audio:
  • 3.5 mm headphone jack
• Networking:
  • 1× Gigabit Ethernet port (10/100/1000 Mbps)
  • Supports IEEE 802.3af/at PoE via optional HAT
  • Wi-Fi 6 (802.11ax) + Bluetooth 5.4 (w/ external antenna)
• I/O Interfaces:
  • 40-pin GPIO header (I²C, SPI, PWM, I²S, UART, etc.)
• USB:
  • 1× USB 2.0 OTG Type-C (power and data)
  • 1× USB 3.1 OTG Type-A
  • 3× USB 2.0 Host Type-A
• Other Features:
  • Power button
  • USB Boot button
  • Fan header
• Power:
  • 1× USB-C (5V/3A or 5V/4A input)
  • PoE via GbE w/ HAT
• Mechanical:
•  85 mm × 56 mm

Further Information

On Radxa’s official AliExpress store, pricing for the Cubie A7A starts at $28.70 for the 2 GB model, with higher memory configurations available at $39.90 (4 GB) and $51.10 (6 GB).

According to the official specifications, the Cubie A7A supports up to 16 GB of LPDDR5, though the current AliExpress listings top out at 12 GB, priced at $84.70.