The NCasT4_v3-series virtual machines are powered by Nvidia Tesla T4 GPUs and AMD EPYC 7V12(Rome) CPUs. The VMs feature up to 4 NVIDIA T4 GPUs with 16 GB of memory each, up to 64 non-multithreaded AMD EPYC 7V12 (Rome) processor cores(base frequency of 2.45 GHz, all-cores peak frequency of 3.1 GHz and single-core peak frequency of 3.3 GHz) and 440 GiB of system memory. These virtual machines are ideal for deploying AI services- such as real-time inferencing of user-generated requests, or for interactive graphics and visualization workloads using NVIDIA's GRID driver and virtual GPU technology. Standard GPU compute workloads based around CUDA, TensorRT, Caffe, ONNX and other frameworks, or GPU-accelerated graphical applications based on OpenGL and DirectX can be deployed economically, with close proximity to users, on the NCasT4_v3 series.
Host specifications
| Part |
Quantity
Count Units |
Specs
SKU ID, Performance Units, etc. |
| Processor |
4 - 64 vCPUs |
AMD EPYC 7V12 (Rome) [x86-64] |
| Memory |
28 - 440 GiB |
|
| Local Storage |
1 Disk |
176 - 2816 GiB
IOPS (RR)
MBps (RR) |
| Remote Storage |
8 - 32 Disks |
IOPS
MBps |
| Network |
2 - 8 NICs |
8000 - 32000 Mbps |
| Accelerators |
1 - 4 GPUs |
Nvidia Tesla T4 GPU (16GB) |
Feature support
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
Sizes in series
vCPUs (Qty.) and Memory for each size
| Size Name |
vCPUs (Qty.) |
Memory (GB) |
| Standard_NC4as_T4_v3 |
4 |
28 |
| Standard_NC8as_T4_v3 |
8 |
56 |
| Standard_NC16as_T4_v3 |
16 |
110 |
| Standard_NC64as_T4_v3 |
64 |
440 |
VM Basics resources
Local (temp) storage info for each size
| Size Name |
Max Temp Storage Disks (Qty.) |
Temp Disk Size (GiB) |
| Standard_NC4as_T4_v3 |
1 |
176 |
| Standard_NC8as_T4_v3 |
1 |
352 |
| Standard_NC16as_T4_v3 |
1 |
352 |
| Standard_NC64as_T4_v3 |
1 |
2816 |
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_NC4as_T4_v3 |
8 |
| Standard_NC8as_T4_v3 |
16 |
| Standard_NC16as_T4_v3 |
32 |
| Standard_NC64as_T4_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.
- 2Special Storage refers to either Ultra Disk or Premium SSD v2 storage.
- 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 Bandwidth (Mbps) |
| Standard_NC4as_T4_v3 |
2 |
8000 |
| Standard_NC8as_T4_v3 |
4 |
8000 |
| Standard_NC16as_T4_v3 |
8 |
8000 |
| Standard_NC64as_T4_v3 |
8 |
32000 |
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).
Accelerator (GPUs, FPGAs, etc.) info for each size
| Size Name |
Accelerators (Qty.) |
Accelerator-Memory (GB) |
| Standard_NC4as_T4_v3 |
1 |
16 |
| Standard_NC8as_T4_v3 |
1 |
16 |
| Standard_NC16as_T4_v3 |
1 |
16 |
| Standard_NC64as_T4_v3 |
4 |
64 |
List of all available sizes: Sizes
Pricing Calculator: Pricing Calculator
Information on Disk Types: Disk Types
Next steps
Take advantage of the latest performance and features available for your workloads by changing the size of a virtual machine.
Learn how to Monitor Azure virtual machines.