Applies to: ✔️ Linux VMs ✔️ Windows VMs ✔️ Flexible scale sets ✔️ Uniform scale sets

HBv3-series VMs are optimized for HPC applications such as fluid dynamics, explicit and implicit finite element analysis, weather modeling, seismic processing, reservoir simulation, and RTL simulation. HBv3 VMs feature up to 120 AMD EPYC™ 7V73X (Milan-X) CPU cores, 448 GB of RAM, and no simultaneous multithreading. HBv3-series VMs also provide 350 GB/sec of memory bandwidth (amplified up to 630 GB/s), up to 96 MB of L3 cache per core (1.536 GB total per VM), up to 7 GB/s of block device SSD performance, and clock frequencies up to 3.5 GHz.

All HBv3-series VMs feature 200 Gb/sec HDR InfiniBand from NVIDIA Networking to enable supercomputer-scale MPI workloads. These VMs are connected in a non-blocking fat tree for optimized and consistent RDMA performance. The HDR InfiniBand fabric also supports Adaptive Routing and the Dynamic Connected Transport (DCT, in additional to standard RC and UD transports). These features enhance application performance, scalability, and consistency, and their usage is strongly recommended.

Premium Storage: Supported
Premium Storage caching: Supported
Ultra Disks: Not supported
Live Migration: Not Supported
Memory Preserving Updates: Not Supported
VM Generation Support: Generation 1 and 2
Accelerated Networking: Supported (Learn more about performance and potential issues)
Ephemeral OS Disks: Supported

Size vCPU Processor Memory (GiB) Memory bandwidth GB/s Base CPU frequency (GHz) All-cores frequency (GHz, peak) Single-core frequency (GHz, peak) RDMA performance (Gb/s) MPI support Temp storage (GiB) Max data disks Max Ethernet vNICs
Standard_HB120rs_v3 120 AMD EPYC 7V73X 448 350 1.9 3.0 3.5 200 All 2 * 960 32 8
Standard_HB120-96rs_v3 96 AMD EPYC 7V73X 448 350 1.9 3.0 3.5 200 All 2 * 960 32 8
Standard_HB120-64rs_v3 64 AMD EPYC 7V73X 448 350 1.9 3.0 3.5 200 All 2 * 960 32 8
Standard_HB120-32rs_v3 32 AMD EPYC 7V73X 448 350 1.9 3.0 3.5 200 All 2 * 960 32 8
Standard_HB120-16rs_v3 16 AMD EPYC 7V73X 448 350 1.9 3.0 3.5 200 All 2 * 960 32 8

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Size table definitions

  • Storage capacity is shown in units of GiB or 1024^3 bytes. When you compare disks measured in GB (1000^3 bytes) to disks measured in GiB (1024^3) remember that capacity numbers given in GiB may appear smaller. For example, 1023 GiB = 1098.4 GB.

  • Disk throughput is measured in input/output operations per second (IOPS) and MBps where MBps = 10^6 bytes/sec.

  • Data disks can operate in cached or uncached modes. For cached data disk operation, the host cache mode is set to ReadOnly or ReadWrite. For uncached data disk operation, the host cache mode is set to None.

  • To learn how to get the best storage performance for your VMs, see Virtual machine and disk performance.

  • Expected network bandwidth is the maximum aggregated bandwidth allocated per VM type across all NICs, for all destinations. For more information, see Virtual machine network bandwidth.

    Upper limits aren't guaranteed. Limits offer guidance for selecting the right VM type for the intended application. Actual network performance will depend on several factors including network congestion, application loads, and network settings. For information on optimizing network throughput, see Optimize network throughput for Azure virtual machines. To achieve the expected network performance on Linux or Windows, you may need to select a specific version or optimize your VM. For more information, see Bandwidth/Throughput testing (NTTTCP).

Other sizes and information

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For more information on disk types, see What disk types are available in Azure?

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