AMD MI455X

AMD MI455X

AMD's CDNA 5 flagship for frontier-scale training and inference in Helios rack systems.

Compare vs other GPUs →

At a glance

Hardware

Architecture
CDNA 5
Memory per GPU
432 GB HBM4
Memory bandwidth
23,300 GB/s
Release date
Q3 2026

Market Updated 12 minutes ago

Coverage
5 providers
5 configs · none verified in stock

MI455X Pricing and Availability

5 providers

How this list works

The two views

By provider shows one card per company, placed where its best offer ranked. By configuration lists every offer.

Order

What you can rent comes first: in stock, then waitlist, then not reported, then out of stock. Priced offers rank ahead of quote-only, and on-demand ahead of other billing types.

Within a group, five factors set the order:

  1. Location: datacenter proximity, blended with provider HQ.
  2. Price: hourly price, per GPU and in total.
  3. Billing type: reserved ahead of spot, spot ahead of quote-only.
  4. Specs: more VRAM, vCPUs and RAM.
  5. Provider diversity: a provider's repeat rows rank slightly lower, so one company can't take all the top spots.

Search

We match the provider, its country, GPU model, form factor, billing type, availability and instance name. Matching is partial and case-insensitive. Everyday words work too, so "interruptible" finds spot and "sold out" finds out of stock.

Transparency and funding

  • Ads and sponsors: Paid placements sit at the top of the list and are always labeled as sponsored content. Sponsorship never influences the organic ranking itself.
  • Affiliates: Affiliate links are marked. We may earn a commission if you click them, but commissions never affect the order.
  • Prices: Shown in USD, converted at daily reference rates where a provider publishes in another currency. A month means 720 hours. How we estimate costs.
TensorWave logo

TensorWave

Waitlist

United States of America flag USA 1 config 1x

Custom on request
Pricing On request Custom Visit website
Microsoft Azure logo

Azure

Waitlist

United States of America flag USA 1 config 1x

Custom on request
Pricing On request Custom Visit website
Cirrascale logo

Cirrascale

Waitlist

United States of America flag USA 1 config 1x

Custom on request
Pricing On request Custom Visit website
Oracle Cloud logo

Oracle Cloud

Waitlist

United States of America flag USA 1 config 1x

Custom on request
Pricing On request Custom Visit website
Vultr logo

Vultr

Waitlist

United States of America flag USA 1 config 1x

Custom on request
Pricing On request Custom Visit website

Heads up: A provider's own page may quote a different figure, for example on tax, region or a promotion. A monthly-only plan shows a derived hourly rate. Verify before provisioning. More on how we price.

What size AI models can the MI455X run?

One MI455X has 432 GB of VRAM. In practice, that's enough memory for roughly 696B parameters at 4-bit or 189B at 16-bit, assuming a 32K context. Below are some open-weight LLMs, with the estimated memory and GPUs each one needs.

Model Parameters 4-bitINT4 / FP4 8-bitFP8 / INT8 16-bitFP16 / BF16
Alibaba Cloud logo Qwen3.8-27B
27B
1 GPU 18 GB VRAM
1 GPU 30 GB VRAM
1 GPU 58 GB VRAM
Google Cloud logo Gemma 4 31B
30.7B
1 GPU 22 GB VRAM
1 GPU 35 GB VRAM
1 GPU 69 GB VRAM
OpenAI logo GPT-OSS-120B
117B 5.1B active
1 GPU 67 GB VRAM
1 GPU 120 GB VRAM
1 GPU 237 GB VRAM
DeepSeek logo DeepSeek V4 Flash
284B 13B active
1 GPU 160 GB VRAM
1 GPU 287 GB VRAM
2 GPUs 573 GB VRAM
Z.AI logo GLM-5.3-Flash
320B 18B active
1 GPU 178 GB VRAM
1 GPU 322 GB VRAM
2 GPUs 642 GB VRAM
MiniMax logo MiniMax-M3
428B 23B active
1 GPU 239 GB VRAM
2 GPUs 432 GB VRAM
3 GPUs 862 GB VRAM
Moonshot AI logo Kimi K3
2.8T 104B active
4 GPUs 1,544 GB VRAM
8 GPUs 2,804 GB VRAM
15 GPUs 5,605 GB VRAM

Estimates based on the median on-demand rate. Memory is weights plus FP8 KV cache at 32K context per request (FP16/BF16 in the 16-bit column). GPU counts assume 90% of advertised VRAM is usable. No guarantee of runtime support, usable performance, or that a matching quantized build exists. How we estimate costs.

Technical Specifications

AMD MI455X · Per GPU

Compute · dense
FP4 40,265 TFLOPS
FP8 20,133 TFLOPS
FP16 / BF16 5,033 TFLOPS 10,066 with sparsity
INT8 5,033 TOPS 10,066 with sparsity
FP32 315 TFLOPS
Precision support FP4FP6FP8FP16BF16FP32INT8
Memory
Capacity 432 GB HBM4
Bandwidth 23,300 GB/s
ECC Yes
Silicon
Architecture CDNA 5
Process TSMC 2nm / 3nm
Transistors 320 billion
Compute units 256
Fabric and host
GPU interconnect Infinity Fabric 3,600 GB/s
Power
Cooling Liquid

Source: official AMD MI455X datasheet.

Frequently Asked Questions

How much does the MI455X cost per hour?

As of September 5, 2026, we track 5 configs from 5 providers, none of them on demand. Prices are per GPU per hour.

Billing type Configs Median / GPU / hr Cheapest in stock
Custom contract 5 On request

Custom-contract pricing is negotiated per deal and usually not published.

Where can I rent an MI455X?

GetDeploying currently tracks MI455X configs from 5 providers. See the full price comparison above for every provider and config.

How many MI455X GPUs do I need?

One MI455X runs models up to roughly 696B parameters at 4-bit quantization or 189B at 16-bit, assuming a 32K context. Larger models run across multiple GPUs: the model table above shows the estimated memory and GPU count for popular open-weight LLMs.

Why choose the MI455X?

432 GB of HBM4 per GPU, the largest memory capacity announced for a data center accelerator, with 23.3 TB/s of bandwidth. Designed for the 72-GPU Helios rack architecture with UALink scale-up networking, targeting frontier model training and large-scale inference.

When is the MI455X not a good fit?

Shipments are ramping from late 2026 into the first half of 2027, so cloud availability is minimal and pricing is not yet published. For AMD workloads today, the MI355X is in production clouds now. ROCm, while rapidly improving, is narrower than CUDA, so evaluate software compatibility before committing.

Alternatives to AMD MI455X

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