MI355X vs B200
The MI355X offers 288GB HBM3e on CDNA 4 with ROCm, while the B200 provides 180GB HBM3e on Blackwell with CUDA. Choose MI355X for maximum memory, B200 for CUDA ecosystem.
Overview
AMD MI355X
The AMD MI355X is a data center GPU on the CDNA 4 architecture, released Q2 2025, with 288 GB HBM3e and 8,000 GB/s memory bandwidth.
Nvidia B200
The Nvidia B200 is a data center GPU on the Blackwell architecture, released Q1 2024, with 180 GB HBM3e and 7,700 GB/s memory bandwidth.
Memory per GPU
1.6x more on MI355X
MI355X
B200
Memory bandwidth
Within 5%
MI355X
B200
GPU interconnect
1.7x higher on B200
MI355X
B200
Peak performance (FP4)
1.1x higher on MI355X
MI355X
B200
Vendor peak figures, dense and per GPU. Not measured throughput.
FP4 per watt
1.3x higher on B200
MI355X
B200
Board power
1.4x higher on MI355X
MI355X
B200
Precision support
MI355X
B200
Highlighted formats are supported by only one of the two.
Architecture
MI355X
B200
Released
15 months newer on MI355X
MI355X
B200
Source: MI355X datasheet and B200 datasheet.
Price comparison
Cheapest on-demand
2.3x higher on MI355X
MI355X
B200
Typical rate
1.3x higher on MI355X
MI355X
B200
Median across providers, one vote each, so a large catalog does not outweigh a small one.
Spot floor
1.1x higher on MI355X
MI355X
B200
Providers listing it
29 more on B200
MI355X
B200
Price, last 90 days
MI355X
B200
Change in the market-wide median, which moves when providers reprice and when cheaper or more expensive listings enter the market.
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.
Offers and availability
How this list works
Order
Each provider appears once per GPU. We pick the one configuration that speaks for that provider, and rank on it in this order:
- Availability: in stock, then waitlist, then not reported, then out of stock. A price you can act on outranks a cheaper one you cannot.
- Billing type: on-demand first, then reserved, then spot, then quote-only. On-demand leads because it is the only rate you can hold without committing to anything.
- Price: the lowest per-GPU hourly rate the provider lists, converted to USD.
The configuration we pick is chosen the same way, availability before billing before price. The rest of that provider's configurations are on the GPU's own page.
Ties sort alphabetically. Reserved rates are not separated by term length, so a three-year commitment can sit above a one-month one: the label beneath each price says which you are looking at. Providers who publish no rate are listed last within their group.
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.
MI355X Offers
0 of 4 providers report available stock.
B200 Offers
7 of 33 providers report available stock.
Similar GPUs
Other comparisons in the same class:
Our data for AMD MI355X was last updated on Sept. 7, 2026, and for Nvidia B200 on Sept. 7, 2026.