Oracle Cloud Infrastructure (OCI)
OCI offers a portfolio of Arm-based cloud compute platforms, including Ampere A1, A2, and the A4 platform. Powered by AmpereOne M® processors, the A4 platform- available in A4.Standard and A4.Standard.Ax-delivers scalable performance for demanding enterprise cloud infrastructure, optimized for AI inference and cloud-native applications at scale, with purpose-built cloud compute that combines performance, energy efficiency, and cost-optimization.
A4 Standard.Ax is further enhanced with Oracle Acceleron, built on an architecture that integrates networking, hardware acceleration, and host optimization to improve workload performance. By offloading key infrastructure services, it enables a more efficient and scalable platform for distributed applications, data platforms, and AI inference workloads in OCI.
OCI provides easy access to this infrastructure through the following programs:
- Free Tier Program: Allows prospective customers to prototype, test, and try out the A1 and A2 platforms before committing to a purchase.
- Always Free Tier: Offers shapes with 4 cores and 24GB of memory at no cost, making it easy to integrate small shapes without additional expenses (A1 only).
- Arm Accelerator Program: Provides credits for up to a year, enabling in-depth exploration of the unique infrastructure (A1 only).
Get Access to OCI Ampere A1 Bare Metal
> See MoreGet Access to OCI Ampere A1 Bare Metal
Get Access to OCI Ampere A2 Free Tier
> See MoreGet Access to OCI Ampere A2 Free Tier
Performance Spotlight
Performance Spotlight
Efficient LLM Deployments on Ampere
Efficient LLM Deployments on Ampere
High-performance, cost- and energy-efficient LLM inference running on Ampere Cloud Native CPUs with Ampere Optimized AI Frameworks and Ampere Optimized models.
Elasticsearch on Oracle VMs based on Ampere
Elasticsearch on Oracle VMs based on Ampere
Learn how Ampere Altra takes Elasticsearch to a new level on OCI
DeathStarBench Social Network on Oracle VMs based on Ampere
DeathStarBench Social Network on Oracle VMs based on Ampere
DeathStarBench is an open-source benchmark suite developed at Cornell University. It includes several end-to-end services, one of which is the social network application.
Spark on Oracle VMs based on Ampere
Spark on Oracle VMs based on Ampere
Apache Spark is an open source, distributed processing system used for big data workloads. It utilizes in-memory caching, and optimized query execution for fast analytic queries against data of any size.
Hadoop on Oracle VMs based on Ampere
Hadoop on Oracle VMs based on Ampere
The Apache Hadoop framework is designed for distributed processing of large data sets intended to scale out from a single server to thousands of machines, each offering local computation, storage, or both.
OCI Ampere A4 Platforms
OCI Ampere A4 Platforms
Purpose-built for cloud economics, OCI A4 Standard features up to 96-core AmpereOne M instances with higher clock speeds than previous-generation AI and A2 instances. Its one-to-one vCPU-to-physical-core mapping eliminates resource contention and ensures predictable performance-reducing the need for overprovisioning to meet service-level agreements.,
With 12-channel DDR5 memory and 100G networking, A4 is optimized for AI and cloud-native workloads. A4.Standard.Ax builds on this foundation, adding enhanced flexibility and infrastructure acceleration to support scale-out, microservices, and distributed workloads more efficiently, with customized VM shapes to match workload requirements.
| Flexible VM Shapes Overview | |
| Description | Get a VM instance that is configured by a sliding scale for cores and memory |
| Compute Shapes | Up to 48 OCUs (or up to 96 AmpereOne® M Cores) |
| Memory Options | Up to 768 GB |
| Network | Up to 100 Gbps Ethernet |
| Network Options | VNIC Options Configurable with up to 24 VNICs |
| Block Storage | Boot volume customizable up to 3.84 TB |
| Partner | Oracle Cloud Infrastructure (OCI) |
| Virtual Machine: VM.Standard. A4. Ax. Flex | |
| OCPU | 1 OCPU minimum, 45 OCPU maximum |
| Memory | 1 GB minimum, 700 GB maximum |
| Storage | Block storage only |
| Network | 100 Gbps |
OCI Ampere A2 Platforms
OCI Ampere A2 Platforms
Get a virtual machine featuring AmpereOne® right sized for your workload with OCI Ampere A2 Flexible VMs. OCI leads the market in price-performance on many workloads.
OCI Ampere A2 Flexible VM Shapes are extremely versatile. These shapes can be sized to fit the requirements of almost any workload. OCI's convenient configurators make building and launching Flexible VMs easy while allowing the operator to maximize their cost and footprint efficiency leaving little stranded capacity behind.
| Flexible VM Shapes Overview | |
| Description | Get a VM instance that is configured by a sliding scale for cores and memory |
| Compute Shapes | Up to 78 OCUs (or up to 156 AmpereOne® Cores) |
| Memory Options | Up to 946 GB |
| Network | Up to 78 Gbps Ethernet |
| Network Options | VNIC Options Configurable with up to 24 VNICs |
| Block Storage | Boot volume customizable up to 32 TB |
| Partner | Oracle Cloud Infrastructure (OCI) |
OCI Ampere A1 Platforms
OCI Ampere A1 Platforms
Get a virtual instance featuring Ampere Altra right-sized for your workload with OCI Ampere A1 Flexible VMs. OCI leads the market in performance/$ on many workloads.
OCI Ampere A1 Flexible VM Shapes are extremely versatile. These shapes can be sized to fit the requirements of almost any workload. OCI's convenient configurators makes building and launching Flexible VMs easy while allowing the operator to maximise their cost and footprint efficiency leaving little stranded capacity behind.
| Flexible VM Shapes Overview | |
| Description | Get a VM instance that is configured by a sliding scale for cores and memory |
| Compute Shapes | Scalable 1-80 Ampere® Altra® Cores |
| Memory Options | Scalable 1GB to 512GB DRAM |
| Network | Scalable 1-40Gb Ethernet |
| Network Options | VNIC Options Configurable with up to 24 VNICs |
| Block Storage | Boot volume customisable up to 32 TB |
| Partner | Oracle Cloud Infrastructure (OCI) |
Access a powerful Bare Metal instance featuring 2x Ampere® Altra® processors giving customers full control of their entire cloud stack on the new Cloud-Native Ampere platform.
OCI Ampere A1 Bare Metal instances are extremely powerful. Bare metal gives customers full control of the cloud stack for any level of Cloud-Native service. OCI's convenient provisioning systems make building and launching Bare Metal instances a snap! OCI Ampere A1 Bare Metal have enhanced security given the single threaded nature of the Ampere Altra cores. OCI infrastructure is also agent-less given customer the peace of mind that there is no compromised performance or additional security risk due to the zero software install base of OCI Bare Metal platforms.
| OCI Ampere A1 Bare Metal Shape Overview | |
| Description | Bare Metal instance with customisable OS image options |
| Compute Shapes | 160 Ampere® Altra® Cores (2P) |
| Memory Options | 1 TB DRAM |
| Network | 100Gb Ethernet NIC |
| Network Options | Virtual cloud network options available |
| Block Storage | Boot volume customisable up to 32 TB |
| Partner | Oracle Cloud Infrastructure (OCI) |
Managed on-premises OCI Ampere A1 platforms offered in Bare Metal and Flex VM shapes.
Get all the benefits of the OCI Infrastructure delivered on premises. This option allows large enterprise customers to take advantage of the superior economic value of the OCI Ampere A1 platform in the security of their own data center. The Dedicated Region option also offers customers access to over 50+ services offered by Oracle in their public cloud. Flex VM, Bare Metal, or both are available.
| Bare Metal Shapes | |
| Description | Bare Metal instance with customisable OS image options |
| Compute Shapes | 160 Ampere® Altra® Cores (2P) |
| Memory Options | 1 TB DRAM |
| Network | 100Gb Ethernet NIC |
| Network Options | Virtual cloud network options available |
| Block Storage | Boot volume customizable up to 32 TB |
| Flex VM Shapes | |
| Description | Get a VM instance that is configured by a sliding scale for cores and memory |
| Compute Shapes | Scalable 1-80 Ampere® Altra® Cores |
| Memory Options | Scalable 1GB to 512GB DRAM |
| Network | Scalable 1-100Gb Ethernet VNIC |
| Network Options | VNIC Options Configurable with up to 24 VNICs |
| Block Storage | Boot volume customisable up to 32 TB |
Resources
Resources
Briefs
Blogs
Blog
Introducing OCI Ampere A4 Standard: Next-Generation Arm-Based Cloud Compute for Performance, Efficiency, and Innovation
Dec, 2025
Oracle
Blog
How Uber, OCI™, and Ampere® Co-Optimized the OCI AmpereOne® M A4 Silicon
Dec, 2025
Uber
Blog
Introducing OCI A4 Standard Instances: Delivering Next Gen Performance with AmpereOne® M
Dec, 2025
Team Ampere
Blog
From Rides to Races: Real-World Workloads on Ampere and Oracle
Nov, 2025
Team Ampere
Blog
AmpereOne® M-Powered A4 Instances Coming to Oracle Cloud
Oct, 2025
Team Ampere
Blog
AmpereOne® now Generally Available on Oracle Cloud Infrastructure
Aug, 2024
Jeff Wittich, Chief Product Officer
Blog
Performance of AI Inference and Modern Cloud Workloads on AmpereOne®
Aug, 2024
Seema Mehta Sr Principal, Product Marketing
Blog
Introducing OCI Ampere A2: Oracle’s next-generation Arm-based cloud compute
Aug, 2024
Oracle
Tuning Guides
Ampere Computing LLC
4655 Great America Parkway Suite 601
Santa Clara, CA 95054
