The Libre Computer Alta (AML-A311D-CC) is a Cottonwood single-board computer built around a six-core Amlogic A311D processor, a manufacturer-rated 5 TOPS AI accelerator, and a four-lane MIPI CSI camera interface. It is a plausible platform to evaluate for edge-vision prototypes, but the 5 TOPS figure is a specification—not proof of performance with a particular model, camera, or software stack.
What the Alta is—and what its AI rating means
Alta refers here to Libre Computer’s AML-A311D-CC single-board computer, not the separately cataloged Alta compute module. The board has 2GB or 4GB of LPDDR4 memory. Libre Computer rates its AI accelerator at 5 TOPS and describes it as having one general-purpose core, four tensor cores, and eight neuro cores. Those are the manufacturer’s specifications; they do not establish inference speed, supported model formats, or performance on a specific computer-vision workload. Libre Computer’s Alta product page does not supply an independent vision benchmark or a comparable test against competing boards.
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The A311D’s CPU comprises four ARM Cortex-A73 cores at 2.016GHz and two Cortex-A53 cores at 1.8GHz. Graphics are handled by a Mali-G52 MP4 GPU; the manufacturer lists OpenGL ES 1.1, 2.0 and 3.2, Vulkan 1.1, and OpenCL 2.0 support. CPU, GPU, and AI acceleration are distinct resources, so the accelerator’s TOPS rating alone is not a complete measure of application performance.
Camera and peripheral connections
For camera projects, the key board-level feature is a four-lane MIPI CSI interface paired with a dual camera ISP. This confirms camera-oriented hardware connectivity, but not that every sensor, cable, driver, or vision framework will work. The product page does not identify a tested camera module or cable. Check the exact sensor and software path before choosing parts.
#1 Best Overall
- LATEST SOFTWARE SUPPORT: Fedora 42, Debian 13, Ubuntu 24.04 LTS, and CoreELEC support with hardware-accelerated video playback and 3D graphics. Upstream software stack featuring the latest Linux 6.x with open source graphics and video libraries.
- UEFI BIOS WITH ETHEREALOS: Full feature BIOS capable of web operating system deployment and automation built-in the ability to customize logo and messages. Supports booting from eMMC, MicroSD card, USB flash drive, and USB hard drives that are separately powered.
- EXTREME POWER EFFICIENCY: Designed for 24/7 operation with idle power usage of just 1W. LED light bulbs use 20 times the power of this board. Enough processing power to encrypt and max out network throughput for VPN operations.
- HARDWARE ACCELERATED 4K CODEC SUPPORT: Watch videos in Ultra HD 4K 10-bit goodness with CoreELEC OS designed for media playback. Capable of decoding H.264 H.265 and VP9 natively in 60 FPS.
- USB TYPE-C POWER: Standardize power input compatible with most power supplies with and without USB Power Delivery capability. Designed to draw up to 3A with 2A available for peripherals.
Other listed interfaces may help when a prototype needs a display, network connection, or external peripherals:
- Four USB 3.0 Type-A ports connected through a hub, plus a USB 2.0 Type-C dual-role-data port with 5V/3A power support.
- Gigabit Ethernet and HDMI 2.0, with 4K HDR support listed by the manufacturer.
- A four-lane MIPI DSI display interface and a 40-pin Pi-compatible GPIO header.
- MicroSD with UHS SDR104 support and an eMMC 5.x interface for Libre Computer modules.
- IR receiver, PoE header, and USB 2.0 headers.
These interface listings do not guarantee compatibility with a particular peripheral, carrier, or accessory. Verify connector, pinout, driver, and power requirements for the components in your build.
Software support: check the accelerator path, not just the OS name
Libre Computer lists upstream Linux and U-Boot support, UEFI, and images or distributions including Debian, Fedora, Ubuntu, OpenSUSE, Raspbian, Lakka, CoreELEC, LibreELEC, Android (AOSP), and Armbian. The manufacturer directs users to board-specific discussion when selecting builds. Availability of an operating-system image does not mean that every image exposes the AI accelerator or provides identical camera and peripheral support.
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Repair Windows errors before they cause bigger problemsFix Now →Fix the driver behind crashes, sound loss and screen glitchesFind Drivers →Clear out junk files and repair common Windows errorsFree Scan →The manufacturer’s news index dates an Alta announcement to September 25, 2023, and lists an October 19, 2023 topic about Alta running a Teflon Mesa TensorFlow Lite delegate. That demonstrates a software topic in the manufacturer’s community, not broad model compatibility or independently measured inference speed. The news index also lists a Cottonwood firmware-update topic dated July 3, 2025, with later activity on August 6, 2025; it does not provide enough detail to identify what changed or establish a current firmware version. Libre Computer news index.
Rank #3
- Powerful Performance: Quad 64-bit 1.2GHz ARM Cortex-A53 Processors, ARM Mali-450 666MHz GPU, 1GB of High Bandwidth DDR4, High Dynamic Range Display Engine for H.265 HEVC, H.264 AVC, VP9 Hardware Decoding
- Energy Efficient: Only 2W power consumption in standard scenarios, built on advanced 28nm High-Performance Mobile (HPM) fabrication technology
- Hardware Extensibility: 40 Pin header enables hardware re-use, maintains RPi compatible alternate pin functions, ultra high speed (UHS) Micro SD card support, onboard IR, ADC header, eMMC module expansion connector
- Latest Software Support: Libre Computer provides Ubuntu 23.04 and 22.04 LTS, Debian 12/Raspbian 11 support with hardware-accelerated video playback and 3D graphics
- Open Software Standard: Libre Computer platforms run standard ARMv8 (64-bit) code from major Linux distributions, pre-compiled open source bootloaders provided for rapid design and deployment
Libre Computer states that the board has 20 years of software support. The product page does not define the term’s start and end dates or service terms, so treat it as a manufacturer lifecycle statement rather than a precisely dated support commitment.
Power, size, and storage considerations
Libre Computer publishes power figures of 10W at full load, 7.5W at typical load, under 1.5W at idle, and under 0.3W in wake-ready mode. The product page does not state test conditions; these are manufacturer-published figures, not independent measurements or a guarantee of consumption in a particular enclosure or workload. Confirm that the supply and thermal setup suit your intended use.
Rank #4
- LATEST SOFTWARE SUPPORT: Libre Computer provides the latest Ubuntu 23.04 and 22.04 LTS along with Debian 12/Raspbian 11 support with hardware-accelerated video playback and 3D graphics. Upstream software stack featuring the latest Linux 6.x with open source graphics and video libraries. Boards images features standardized bootloaders with UEFI support and behaves similar to a standard computer.
- HIGH PERFORMANCE DESIGN: Quad 64-bit 1.4GHz ARM Cortex-A53 Processors, 4K Ultra HD ARM Mali-450 GPU, 2GB of High Bandwidth DDR4, 4K 60FPS High Dynamic Range Display Engine for H.265 HEVC, H.264 AVC, VP9 Hardware Decoding and 1080P 60FPS H.264 Harware Encoding, Up to 40% faster than Raspberry Pi 3.
- UNMATCHED IO PERFORMANCE: Equipped with superfast Gigabit Ethernet and lightning speed 5Gbps USB 3, Renegade will power through mixed workloads unlike any sub $50 SBC can dream of. Turn it into a NAS, Kubernetes cluster, file server, wire speed encrypted router/VPN, and more! The performance and possibilities are endless.
- HARDWARE EXTENSIBILITY: 40 Pin header enables hardware re-use by maintaining RPi compatible alternate pin functions like SPI, I2C, PWM, UART, and GPIO. Additional design features include ultra high speed (UHS) Micro SD card support, onboard IR, ADC header, eMMC module expansion connector, and more. Form-factor compatible for easy migration from Raspberry Pi 3 designs. See libretech-wiring-tool for more.
- OPEN SOFTWARE STANDARD: Libre Computer platforms run standard ARMv8 (64-bit) code from all major Linux distributions. Pre-compiled open source bootloaders are provided to strap any distribution, Buildroot, or Yocto images for rapid design and deployment. This platform runs standard Linux distribution kernels and an optimized Linux tree is available on GitHub.
The board follows Libre Computer’s CC standard and measures 85 × 56 × 20mm. Storage options listed are MicroSD and an eMMC 5.x interface for Libre Computer modules; no particular module or capacity is specified on the product page. Choose storage based on your operating-system image, model files, logging needs, and the module’s compatibility.
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Libre Computer lists an MSRP of $105 for the 2GB model and $145 for the 4GB model. These are manufacturer-published prices, not verified live retail prices; stock, shipping, and current retailer availability are not established by the product listing.
Best Value
- ULTRA FAST FLASH STORAGE FOR LIBRE COMPUTER BOARDS: Designed specifically for Libre Computer Boards that support the latest eMMC 5.x standard, our modules enable up to 128GB of attached flash storage with up to 250MB/s read speed and up to 125MB/s write speed*.
- HIGHER ENDURANCE STORAGE: eMMC flash storage is more robust than MicroSD SD cards for long term mix read/write workloads for applications involving sensitive or secure data storage.
- ALTERNATIVE TO SSD: SSD drives require additional power and an USB bridge chip that adds latency and limits throughput. eMMC offers a more cost effective and higher performance solution for embedded systems.
- UNPARALLELED RANDOM READ/WRITE PERFORMANCE: Featuring up to 10K random 4K block performance*, eMMC is up to 5X faster than UHS MicroSD cards for common operating system access patterns.
- SUPPORTED BY ALL OPERATING SYSTEMS: Libre Computer Project offers the latest upstream software support for all of our boards and accessories. eMMC modules can be accessed via u-boot, Linux, Android, and more!
The manufacturer also catalogs the Solitude AML-S905D3-CC, a lower-priced Cottonwood board listed with a 1.2 TOPS NPU and MIPI CSI/DSI. The ratings are manufacturer specifications, not results from a common benchmark, so the numbers do not establish a proportional performance difference. Compare the actual CPU and GPU needs, memory configuration, interfaces, software path, power requirements, and current price for your project rather than choosing on TOPS alone. Libre Computer’s Solitude product page.
Quick Recap
- Alta is worth evaluating if your design needs its listed camera interface, accelerator, memory option, or I/O and you can confirm the camera and software stack you need.
- Pause before buying if the project depends on a specific camera sensor, AI framework, model, or measured frame rate that you have not verified on this board.
- Choose the memory variant deliberately: the listed options are 2GB and 4GB LPDDR4; the product page does not claim a workload-specific memory recommendation.
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply.
