MI455X vs GB300
Both target rack-scale deployments: the MI455X ships in 72-GPU Helios racks with UALink, while the GB300 NVL72 combines 72 Blackwell Ultra GPUs with Grace CPUs over NVLink. Choose MI455X for HBM4 capacity, GB300 for the CUDA ecosystem.
Overview
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AMD MI455X
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Nvidia GB300
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| Summary | AMD's CDNA 5 flagship for frontier-scale training and inference in Helios rack systems. | Grace CPU + Blackwell Ultra GPU superchip built for rack-scale AI reasoning and inference. |
| Architecture | CDNA 5 | Grace Blackwell Ultra |
| Memory | 432GB HBM4 | Up to 20TB HBM3e |
| Memory Bandwidth | 23,300 GB/s | 576,000 GB/s |
| Performance | 5,030 TFLOPS (FP16) | -- |
| Release Date | Unknown | Q1 2025 |
| Performance Segment | High Performance | High Performance |
| Datasheet | Link | Link |
Price comparison
MI455X Pricing
The MI455X is listed by 4 cloud providers, but none offer public on-demand pricing.
How we sort results
Default ranking
Our algorithm weighs five factors to find the most relevant matches for you:
- Price: We blend total hourly price with price-per-GPU to balance affordability and value.
- Specs: We favor offers with higher CPU, RAM, and GPU Memory.
- Billing: We favor on-demand billing for simplicity and flexibility over spot instances, reservations, and custom quotes.
- Location: We blend both datacenter proximity and provider HQ location. Datacenter location matters for latency, while HQ location matters for compliance and support.
- Provider diversity: Each time a provider appears in the list, their subsequent offerings are ranked a little lower, so one provider's offerings don't crowd out the top positions.
Sorting and filtering
Click "View all offerings" to access the full list with sortable columns and filters for billing type, GPU count, vCPUs, and RAM.
Transparency and funding
Ads and sponsors: Any paid placements are fixed at the top and clearly labeled as sponsored content.
Affiliates: Any affiliate links will be indicated to you as well. We may earn a commission if you click them, but this never influences the ranking order.
| Provider | GPUs | Billing | Total/h | |
|---|---|---|---|---|
TensorWave
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1x | Custom Accepting reservations, pricing TBD | Custom | View |
Cirrascale
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1x | Custom Announced for the AI Innovation Cloud, pricing TBD | Custom | View |
Azure
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1x | Custom Custom terms negotiated with the provider. | Custom | View |
Vultr
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1x | Custom Custom terms negotiated with the provider. | Custom | View |
| No offerings matching your filters. | ||||
GB300 Pricing
There is a 76% difference between the highest and lowest listings for the GB300. You can pay up to $18.00/hr, but the market floor is currently $4.26/hr per GPU (36-month reservation).
How we sort results
Default ranking
Our algorithm weighs five factors to find the most relevant matches for you:
- Price: We blend total hourly price with price-per-GPU to balance affordability and value.
- Specs: We favor offers with higher CPU, RAM, and GPU Memory.
- Billing: We favor on-demand billing for simplicity and flexibility over spot instances, reservations, and custom quotes.
- Location: We blend both datacenter proximity and provider HQ location. Datacenter location matters for latency, while HQ location matters for compliance and support.
- Provider diversity: Each time a provider appears in the list, their subsequent offerings are ranked a little lower, so one provider's offerings don't crowd out the top positions.
Sorting and filtering
Click "View all offerings" to access the full list with sortable columns and filters for billing type, GPU count, vCPUs, and RAM.
Transparency and funding
Ads and sponsors: Any paid placements are fixed at the top and clearly labeled as sponsored content.
Affiliates: Any affiliate links will be indicated to you as well. We may earn a commission if you click them, but this never influences the ranking order.
| Provider | GPUs | Billing | Total/h | |
|---|---|---|---|---|
Verda
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1x | On-Demand Pay-as-you-go pricing. No term commitments. | $8.62 | View |
Oracle Cloud
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4x | On-Demand Pay-as-you-go pricing. No term commitments. | $72.00 | View |
Impossible Cloud
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1x | Reserved (36mo) Reserved capacity with a 3-year minimum commitment. | $4.26 | View |
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Verda
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2x | On-Demand Pay-as-you-go pricing. No term commitments. | $17.24 | View |
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Verda
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4x | On-Demand Pay-as-you-go pricing. No term commitments. | $34.48 | View |
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Verda
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1x | Reserved (24mo) Reserved capacity with a 24-month minimum commitment. | $6.46 | View |
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Verda
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1x | Spot Variable spot pricing with potential interruptions. | $3.02 | View |
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Verda
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4x | Spot Variable spot pricing with potential interruptions. | $12.07 | View |
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Impossible Cloud
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72x | Reserved (36mo) Reserved capacity with a 3-year minimum commitment. | $311.04 | View |
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Verda
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2x | Reserved (24mo) Reserved capacity with a 24-month minimum commitment. | $12.93 | View |
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Verda
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1x | Reserved (12mo) Reserved capacity with a 1-year minimum commitment. | $7.93 | View |
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Verda
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4x | Reserved (24mo) Reserved capacity with a 24-month minimum commitment. | $25.86 | View |
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Verda
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1x | Reserved (6mo) Reserved capacity with a 6-month minimum commitment. | $8.28 | View |
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Verda
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1x | Reserved (3mo) Reserved capacity with a 3-month minimum commitment. | $8.36 | View |
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Verda
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1x | Reserved (1mo) Reserved capacity with a 1-month minimum commitment. | $8.45 | View |
| No offerings matching your filters. | ||||
Heads up: We do our best to keep these specs & prices accurate. However, cloud costs may fluctuate based on region, usage, and other factors not listed here. These are estimates based on common setups and are for informational purposes only. Always verify current rates & exact specs with the provider before provisioning.
Alternative GPUs
Here's how these GPUs compare against alternatives:
AMD MI455X
vs
AMD MI355X
AMD MI455X
vs
Nvidia B300
Nvidia GB300
vs
Nvidia GB200
Nvidia GB300
vs
Nvidia B300
Our data for AMD MI455X was last updated on July 27, 2026, and for Nvidia GB300 on July 23, 2026.