GPU comparison
MI355X vs MI450: specs and rental prices
AMD Instinct MI355X against AMD Instinct MI450 series (MI455X): 288 GB against 432 GB of memory. Specs from AMD, prices as of Oct 29, 2026.
In short
- The MI450 lists 432 GB of GPU memory against 288 GB for the MI355X: 1.5× higher.
- Memory type is HBM3E on the MI355X and HBM4 on the MI450.
- The MI450 lists 23,300 GB/s of memory bandwidth against 8,000 GB/s for the MI355X: 2.91× higher.
- The MI450 lists 10,100 TFLOPS of FP16 / BF16 tensor throughput against 5,000 TFLOPS for the MI355X: 2.02× higher.
- Not every figure can be compared: at least one vendor page does not publish: TF32 tensor throughput; Maximum power; GPU-to-GPU interconnect.
- Only the MI355X has a fresh on-demand listing ($8.60 per GPU-hour at Oracle Cloud); the MI450 has none right now.
This summary is generated from the tables below. Prices were last checked Oct 29, 2026. A listing not re-checked for 7 days is greyed and left out of every lowest-price figure; after 14 days it is removed from the page.
Specifications side by side
| Specification | MI355X | MI450 MI455X | Difference |
|---|---|---|---|
| GPU memory | 288 GB | 432 GB | MI450 1.5× higher |
| Memory type | HBM3E | HBM4 | Different |
| Memory bandwidth | 8,000 GB/s | 23,300 GB/s | MI450 2.91× higher |
| FP8 tensor throughput | 10,100 TFLOPS (with sparsity) | 20,100 TFLOPS (basis not stated) | Not compared: the vendors state the figures on different bases |
| FP16 / BF16 tensor throughput, with sparsity | 5,000 TFLOPS | 10,100 TFLOPS | MI450 2.02× higher |
| FP64 throughput | 78.6 TFLOPS | 5 TFLOPS | MI355X 15.72× higher |
| Maximum power | 1,400 W | Not published | — |
| GPU-to-GPU interconnect | Not published | 3,600 GB/s | — |
Compared versions: MI355X and MI450 MI455X. The figure in the stronger cell is shaded; power is shown without a winner. Two throughput figures are compared only when both vendors state them on the same basis (both with sparsity, or both dense), and “derived” means a total the vendor publishes divided by the GPU count it publishes. Full tables with sources: MI355X specifications · MI450 specifications.
Rental prices
| Rental price | MI355X | MI450 | Difference |
|---|---|---|---|
| Lowest listed on-demand price | $8.60 per GPU-hour · Oracle Cloud · checked Oct 29, 2026 | No fresh listing | — |
| Lowest listed spot price | No fresh listing | No fresh listing | — |
| Price per GB of memory | $0.030 per GB of GPU memory per hour | Not available | — |
| Fresh listings | 1 from 1 providers | 0 from 0 providers | — |
Prices cover every version and instance size the providers list, so they are not tied to the versions compared above; the price per GB of memory divides the lowest fresh on-demand price by the memory of the compared version. Listed prices are not like for like across providers. See every listing: MI355X prices · MI450 prices.
More on these GPUs
Cite this page
Last updated Oct 29, 2026. Figures may change as records are updated — include the date you retrieved them.
| APA | Data Center Census. (2026). MI355X vs MI450. Retrieved from https://datacentercensus.com/gpu-prices/compare/mi355x-vs-mi450 |
|---|---|
| MLA | “MI355X vs MI450.” Data Center Census, Oct 29, 2026, https://datacentercensus.com/gpu-prices/compare/mi355x-vs-mi450. |
| Link | https://datacentercensus.com/gpu-prices/compare/mi355x-vs-mi450 |
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