Ampere Altra 64-Bit Multi-Core Processor Product Brief User Guide
Ampere® Altra® 64-Bit Multi-Core Processor
Designed to meet the requirements of modern data centers, Ampere Altra delivers predictable performance, high scalability, and power efficiency for data center deployments from hyper scale cloud to the edge cloud. Drive efficiency in your data center infrastructure workloads, including data analytics, artificial intelligence, database storage, telco stacks, edge computing, and web hosting.
Features
PROCESSOR SUBSYSTEM
- 80 Arm v8.2+ 64-bit CPU cores up to 3.30 GHz maximum
- 64 KB L1 I-cache, 64 KB L1 D-cache per core
- 1 MB L2 cache per core
- 32 MB System Level Cache (SLC)
- 2x full-width (128b) SIMD
- Coherent mesh-based interconnect Distributed snoop filtering
MEMORY
- 8x 72-bit DDR4-3200 channels ECC, Symbol-based ECC, and DDR4 RAS features
- Up to 16 DIMMs and 4 TB/socket
SYSTEM RESOURCES
- Full interrupt virtualization (GICv3)
- Full I/O virtualization (SMMUv3)
- Enterprise server-class RAS
Predictable Performance
Ampere Altra offers up to 80 cores at up to 3.30 GHz speed maximum. Each core is single threaded by design with its own 64 KB L1 I-cache, 64 KB L1 D-cache, and a huge 1 MB L2 cache, delivering predictable performance 100% of the time by eliminating the noisy neighbor challenge within each core. Coherent mesh-based interconnect topology
provides efficient bandwidth with 32 distributed home nodes and directory-based snoop filters to enable seamless connectivity between the cores.
Power Efficiency
Ampere Altra provides industry-leading cores in a single-socket and 160 cores in a dual-socket platform, establishing new levels of power efficiency with scalability. Ampere Altra processor’s advanced power management capabilities include Advanced Configuration Power Interface (ACPI) v6.2 support, Dynamic Frequency Scaling (DFS), on-die thermal monitoring, and dynamic power estimation.
High Scalability
With leading power/core, and multi-socket support, Ampere Altra provides the scalability to maximize the number of servers per rack, unparalleled in the industry. With 128 lanes of PCIe Gen4 per socket with support for 192 PCIe Gen4 lanes in 2P configuration that can be bifurcated down to x2, Ampere Altra provides maximum flexibility to interface with off-chip devices, including networking cards up to 100 GbE or more, and storage/NVMe devices, making it well suited for big data applications.
Ampere Altra Platforms 1 U, 2 U, and Half-Width Servers
Several platforms are available for various workloads including cloud compute, storage, Android in the cloud, and HPC. Platforms for Ampere processors provide manageability, security, and expandability (via add-in cards).
Visit https://solutions.amperecomputing.com/ systems/altra to learn more about Ampere’s Altra based platforms.
Ordering Information
The ordering information for the currently available SKUs are listed below.
- AC-108025002 (80 cores, 3.30 GHz)
- AC-108021002 (80 cores, 3.00 GHz)
- AC-108018502 (80 cores, 2.80 GHz)
- AC-108015002 (80 cores, 2.60 GHz)
- AC-107219502 (72 cores, 3.00 GHz)
- AC-106422002 (64 cores, 3.30 GHz)
- AC-106418002 (64 cores, 3.00 GHz)
SPECIFICATIONS
- Operating Junction Temperature Range – 0°C to +90°C
- Power Supplies CPU: 0.75 V, DDR4: 1.2 V I/O: 3.3 V/1.8 V, SerDes PLL: 1.8 V
- Packaging 4926-Pin FCLGA
TECHNOLOGY & FUNCTIONALITY
- Arm v8.2+, SBSA Level 4
- Advanced Power Management Dynamic estimation, Voltage droop mitigation
Altra Block Diagram 
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Ampere Altra 64-Bit Multi-Core Processor Product Brief User Guide
