AMD MI455X
vs
Nvidia H20
The MI455X is newer, with 4.5x the memory and 5.8x the bandwidth.
At a glance
Memory
4.5x more on MI455X
- MI455X
- 432 GB
- H20
- 96 GB
Memory bandwidth
5.8x higher on MI455X
- MI455X
- 23.30 TB/s
- H20
- 4.00 TB/s
Cheapest on-demand
MI455X is not sold on demand
- MI455X
- --
- H20
- --
Price comparison
Median price per GPU per hour by billing type, with the cheapest listing under it.
Specs comparison
| Spec | MI455X | H20 | Difference |
|---|---|---|---|
| Memory | |||
| Capacity | 432 GB HBM4 | 96 GB HBM3 | 4.5x more on MI455X |
| Bandwidth | 23,300 GB/s | 4,000 GB/s | 5.8x higher on MI455X |
| Platform | |||
| Interconnect | Infinity Fabric 3,600 GB/s | PCIe only | Infinity Fabric on MI455X only |
| Released | Q3 2026 | Q1 2024 | 3 years newer on MI455X |
| Precision | |||
| Supported formats | FP4FP6FP8FP16BF16FP32INT8 | FP8FP16BF16TF32FP32FP64INT8 | |
Source: MI455X datasheet .
Where to rent them
Providers that rent these GPUs, with each one's cheapest rate. No provider we track offers both right now.
| Provider | MI455X | H20 |
|---|---|---|
Azure
USA
|
On request Custom | -- |
Cirrascale
USA
|
On request Custom | -- |
Oracle Cloud
USA
|
On request Custom | -- |
TensorWave
USA
|
On request Custom | -- |
Vultr
USA
|
On request Custom | -- |
Similar GPUs
Other comparisons in the same class.
-
Nvidia B300
288 GB HBM3e · 66% less bandwidth than the MI455X
From $4.99 /GPU/hr Compare
-
AMD MI355X
288 GB HBM3e · 66% less bandwidth than the MI455X
From $5.99 /GPU/hr Compare
-
Nvidia GB300
288 GB HBM3e · 66% less bandwidth than the MI455X
From $18.00 /GPU/hr Compare
-
Nvidia H100
80 GB HBM3 · 16% less bandwidth than the H20
From $1.30 /GPU/hr Compare
-
Nvidia A100
80 GB HBM2e · 52% less bandwidth than the H20
From $0.40 /GPU/hr Compare
Our data for AMD MI455X was last updated on Sept. 14, 2026, and for Nvidia H20 on Sept. 14, 2026.