HBv3 sizes series

HBv3-series Virtual Machines (VMs) are designed for very demanding computing tasks. They help with things like studying how liquids move, analyzing structures, predicting weather, and processing earthquake data. They also support oil reservoir modeling and testing computer chip designs. 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 (1536 MB 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 High Data Rate (HDR) InfiniBand from NVIDIA Networking to enable supercomputer-scale Message Pass Interface (MPI) workloads. These VMs are connected in a nonblocking fat tree for optimized and consistent RDMA performance. The HDR InfiniBand fabric also supports Adaptive Routing and Dynamic Connected Transport (DCT), along with standard Reliable Connection (RC) and Unreliable Datagram (UD) transports. These features improve performance, make scaling easier, and keep results consistent.

Host specifications

Part	Quantity ^{Count Units}	Specs ^{SKU ID, Performance Units, etc.}
Processor	16 - 120 vCPUs	AMD EPYC 7V73X (Milan-X) [x86-64]
L3 Cache	1536 MB
Memory	448 GB	350 GB/s
Local Storage	1 Temp Disk 2 NVMe Disks	480 GiB 960 GiB
Remote Storage	32 Disks
Network	8 vNICs 1 InfiniBand HDR NIC	40 Gb/s 200 Gb/s
Accelerators	None

For features supported by this series, see the Feature support section.

Sizes in series

vCPUs (Qty.) and Memory for each size

Size Name	vCPUs (Qty.)	Memory (GB)	L3 Cache (MB)	Memory Bandwidth (GB/s)	Base CPU Frequency (GHz)	Single-core Frequency Peak (GHz)	All-core Frequency Peak (GHz)
Standard_HB120rs_v3	120	448	1536	350	1.9	3.5	3
Standard_HB120-96rs_v3	96	448	1536	350	1.9	3.5	3
Standard_HB120-64rs_v3	64	448	1536	350	1.9	3.5	3
Standard_HB120-32rs_v3	32	448	1536	350	1.9	3.5	3
Standard_HB120-16rs_v3	16	448	1536	350	1.9	3.5	3

VM Basics resources

Check vCPU quotas

Local (temp) storage info for each size

Size Name	Max Temp Storage Disks (Qty.)	Temp Disk Size (GiB)	Local Solid State Disks (Qty.)	Local Solid State Disk Size (GiB)
Standard_HB120rs_v3	1	480	2	960
Standard_HB120-96rs_v3	1	480	2	960
Standard_HB120-64rs_v3	1	480	2	960
Standard_HB120-32rs_v3	1	480	2	960
Standard_HB120-16rs_v3	1	480	2	960

Storage resources

Table definitions

¹Temp disk speed often differs between RR (Random Read) and RW (Random Write) operations. RR operations are typically faster than RW operations. The RW speed is usually slower than the RR speed on series where only the RR speed value is listed.
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.
To learn how to get the best storage performance for your VMs, see Virtual machine and disk performance.

Remote (uncached) storage info for each size

Size Name	Max Remote Storage Disks (Qty.)
Standard_HB120rs_v3	32
Standard_HB120-96rs_v3	32
Standard_HB120-64rs_v3	32
Standard_HB120-32rs_v3	32
Standard_HB120-16rs_v3	32

Storage resources

Table definitions

¹Some sizes support bursting to temporarily increase disk performance. Burst speeds can be maintained for up to 30 minutes at a time.
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.

Network interface info for each size

Size Name	Max NICs (Qty.)	Max Network Bandwidth (Mb/s)
Standard_HB120rs_v3	8	40000
Standard_HB120-96rs_v3	8	40000
Standard_HB120-64rs_v3	8	40000
Standard_HB120-32rs_v3	8	40000
Standard_HB120-16rs_v3	8	40000

Networking resources

Table definitions

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).

Network interface info for each size

Size Name	Backend NICs (Qty.)	RDMA Performance (Gb/s)
Standard_HB120rs_v3	1	200
Standard_HB120-96rs_v3	1	200
Standard_HB120-64rs_v3	1	200
Standard_HB120-32rs_v3	1	200
Standard_HB120-16rs_v3	1	200

Backend Networking resources

Set up Infiniband on HPC VMs

Feature support

Feature name	Support status
Premium Storage	Supported
Premium Storage caching	Supported
Live Migration	Not Supported
Memory Preserving Updates	Not Supported
Generation 2 VMs	Supported
Generation 1 VMs	Supported
Accelerated Networking	Supported
Ephemeral OS Disk	Supported
Nested Virtualization	Not Supported
Backend Network	InfiniBand HDR

Other size information

List of all available sizes: Sizes

Pricing Calculator: Pricing Calculator

Information on Disk Types: Disk Types

Next steps

Read about the latest announcements, HPC workload examples, and performance results at the Azure Compute Tech Community Blogs.

For a higher level architectural view of running HPC workloads, see High Performance Computing (HPC) on Azure.

Feedback

Was this page helpful?

Last updated on 2026-03-10

Share via

HBv3 sizes series

Host specifications

Sizes in series

VM Basics resources

Feature support

Other size information

Next steps

Feedback

Additional resources