---
name: vpc-vsi-profile-details-accelerated-gen4
title: Accelerated (GPU) instance profiles - Gen 4
description: The Gen 4 accelerated (GPU) family of profiles provides on-demand, cost-effective access to the latest generation accelerators for IBM Cloud® Virtual Servers for Virtual Private Cloud (VPC). These accelerators help to reduce the processing time that is required for compute intensive workloads such as AI, machine learning, inferencing, and more.
last-updated: 2026-05-08
---

> ## Documentation Index
> The table of contents for this documentation set is at https://cloud.ibm.com/docs/vpc?format=markdown
> The index for all IBM Cloud docs is at: https://cloud.ibm.com/docs/llms.txt
> Use these files to discover more information as needed.

# Accelerated (GPU) instance profiles - Gen 4
{: #accelerated-profile-family-gen4}

The Gen 4 accelerated (GPU) family of profiles provides on-demand, cost-effective access to the latest generation accelerators for IBM Cloud® Virtual Servers for Virtual Private Cloud (VPC). These accelerators help to reduce the processing time that is required for compute intensive workloads such as AI, machine learning, inferencing, and more.
{: shortdesc}

NVIDIA HGX B300 accelerated virtual server profiles are available for select customers. Create a [support case](https://cloud.ibm.com/docs/support?topic=support-open-case&interface=ui&format=markdown) if you are interested in purchasing and using this offering.
{: preview}

## NVIDIA B300 instance profile
{: #nvidia-b300-profiles}

The Blackwell-based Accelerated virtual server profiles are built atop the NVIDIA B300 accelerator. These accelerators are tuned for AI workloads, including inferencing, fine-tuning, and large-scale training. The solution is paired with the 6th Generation Intel Xeon Scalable processors.

### Operating systems
{: #nvidia-b300-os}

- Linux

### Processor generation
{: #nvidia-b300-processor}

- Intel® Xeon® 6776P Processor

### Accelerator
{: #nvidia-b300-accelerator}

- NVIDIA B300 SXM6 (288 GB) based on the Blackwell Ultra chip

### Availability
{: #nvidia-b300-availability}

Status: Select Availability

The following table lists the available regions and universal zones for the NVIDIA B300 accelerated virtual server profiles.

| Region                    | Universal zone    |
| ------------------------  | -------------     |
| Washington DC (`us-east`) | `us-east-wdc07-a` |
{: caption="Supported regions and zones" caption-side="bottom"}

For more information about regions and universal zones, see [Regions](https://cloud.ibm.com/docs/overview?topic=overview-locations&format=markdown#regions). You can review the assigned zone mapping for an account on the [VPC Infrastructure Overview](https://cloud.ibm.com/infrastructure/overview#endpoints) page in the Endpoint section. The zone mapping shows how the zone corresponds to the universal zone name that represents the physical location.

### Capabilities
{: #nvidia-b300-capabilities}

- Core type: Dedicated
- Dedicated host: No
- Hyperthreading: Yes (SMT-2)
- Secure boot: No
- Confidential computing: No
- Live migration: No
- Instance storage: Yes
- NVLink: Yes (1.8 TBps)
- [NVIDIA GPUDirect Capable](https://developer.nvidia.com/gpudirect){: external}: Yes
- NIC capabilities:
    - Max single NIC throughput: up to 200 Gbps VPC traffic and 32 Gbps external
    - Bandwidth Pooling: Yes
- [Volume bandwidth allocation method](https://cloud.ibm.com/docs/vpc?topic=vpc-block-storage-bandwidth&format=markdown#attached-block-vol-bandwidth): `pooled` by default; it can be updated to `weighted`.

### VM configuration
{: #nvidia-b300-vm-config}

- Hardware type: q35
- Cloud networking: virtio
- Block boot volume: virtio
- Block data volumes: virtio
- Instance storage: NVMe

### Instance profiles
{: #nvidia-b300-vsi-profiles}

The following table lists the NVIDIA B300 accelerated virtual server profile.

| Instance profile | vCPU / Cores / NUMA | Memory (GiB) | Bandwidth cap (Gbps) | Accelerators | Instance storage (GB) |
|---------|---------|---------|---------|---------|---------|
| gx4d-232x3840x8b300 | 232 / 116 / 2 | 3840 | 200 | 8x NVIDIA B300 (288 GB) | 4 x 7.68 TB |
{: caption="Accelerated NVIDIA B300 profile options" caption-side="bottom"}

This large profile likely requires that you open a support ticket to request a [quota increase](https://cloud.ibm.com/docs/vpc?topic=vpc-quotas&format=markdown). Review your quota levels, and determine whether the account that's provisioning the resource requires a change to the quotas. This server uses vCPU, RAM, instance storage, and GPU quotas.
{: important}

### Limits
{: #nvidia-b300-vsi-limits}

An instance has a limit for the number of volumes and virtual network interfaces that can be attached. This limit is based on the size of the instance.

| Number of vCPUs | Max volumes | Max vNICs |
| --------------- | ----------- | --------- |
| 49+             | 12          | 15        |
{: caption="Accelerated NVIDIA B300 limits for vCPU, maximum volumes, and maximum network interfaces" caption-side="bottom"}

#### Boot volume profiles
{: #nvidia-b300-volume-profiles}

In the current release of Block Storage for VPC offering, only first-generation volumes from the tiered and custom volume profile families can be used as boot volumes for the NVIDIA B300 instances.