The MI455X is newer, with 50% more memory and 2.9x the bandwidth.
At a glance
Memory
50% more on MI455X
- MI350X
- 288 GB
- MI455X
- 432 GB
Memory bandwidth
2.9x higher on MI455X
- MI350X
- 8.00 TB/s
- MI455X
- 23.30 TB/s
Cheapest on-demand
MI350X and MI455X are not sold on demand
- MI350X
- --
- MI455X
- --
Price comparison
Median price per GPU per hour by billing type, with the cheapest listing under it.
| Billing | MI350X | MI455X | Difference |
|---|---|---|---|
| Reserved | -- /GPU/hr from $4.76 (12 mo) | No reserved listings | |
| Spot | -- /GPU/hr from $2.46 | No spot listings |
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. Medians are across providers, one vote each, so a large catalog does not outweigh a small one. No median for reserved and spot on the MI350X: we only show one when at least 3 providers list the GPU on that billing type. Verify before provisioning. More on how we price.
Price history
MI350X vs MI455X price history
Weekly median on-demand price per GPU per hour
Specs comparison
| Spec | MI350X | MI455X | Difference |
|---|---|---|---|
| Memory | |||
| Capacity | 288 GB HBM3e | 432 GB HBM4 | 50% more on MI455X |
| Bandwidth | 8,000 GB/s | 23,300 GB/s | 2.9x higher on MI455X |
| Bus width | 8,192-bit | ||
| Compute · dense | |||
| FP4 | 9,227.5 TFLOPS | 40,265 TFLOPS | 4.4x higher on MI455X |
| FP8 | 4,614 TFLOPS | 20,133 TFLOPS | 4.4x higher on MI455X |
| FP16 / BF16 | 2,309.6 TFLOPS | 5,033 TFLOPS | 2.2x higher on MI455X |
| INT8 | 4,614 TOPS | 5,033 TOPS | 9% higher on MI455X |
| FP32 | 144.2 TFLOPS | 315 TFLOPS | 2.2x higher on MI455X |
| FP64 | 72.1 TFLOPS | Not supported | MI350X only |
| Platform | |||
| Interconnect | Infinity Fabric 1,075 GB/s | Infinity Fabric 3,600 GB/s | 3.3x higher on MI455X |
| Released | Q2 2025 | Q3 2026 | 13 months newer on MI455X |
| Precision | |||
| Supported formats | FP4FP6FP8FP16BF16FP32FP64INT8 | FP4FP6FP8FP16BF16FP32INT8 | |
Compute: Vendor peak figures, dense and per GPU. Not measured throughput.
Source: MI350X datasheet and 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 | MI350X | MI455X |
|---|---|---|
DigitalOcean
USA
|
$4.76 /GPU/hr Reserved | -- |
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.
Our data for AMD MI350X was last updated on Sept. 14, 2026, and for AMD MI455X on Sept. 14, 2026.