AMD MI455X
vs
Nvidia L40
The MI455X is newer, with 9x the memory and 27x the bandwidth.
At a glance
Memory
9x more on MI455X
- MI455X
- 432 GB
- L40
- 48 GB
Memory bandwidth
27x higher on MI455X
- MI455X
- 23,300 GB/s
- L40
- 864 GB/s
Cheapest on-demand
MI455X is not sold on demand
- MI455X
- --
- L40
- $0.78 /GPU/hr
Price comparison
Median price per GPU per hour by billing type, with the cheapest listing under it.
| Billing | MI455X | L40 | Difference |
|---|---|---|---|
| On-demand | No on-demand listings | $1.05 /GPU/hr from $0.78 | |
| Reserved | No reserved listings | -- /GPU/hr from $0.70 | |
| Spot | No spot listings | $0.78 /GPU/hr from $0.73 |
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 on the L40: 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
MI455X vs L40 price history
Weekly median on-demand price per GPU per hour
Specs comparison
| Spec | MI455X | L40 | Difference |
|---|---|---|---|
| Memory | |||
| Capacity | 432 GB HBM4 | 48 GB GDDR6 | 9x more on MI455X |
| Bandwidth | 23,300 GB/s | 864 GB/s | 27x higher on MI455X |
| Bus width | 384-bit | ||
| Compute · dense | |||
| FP4 | 40,265 TFLOPS | Not supported | MI455X only |
| FP8 | 20,133 TFLOPS | 362 TFLOPS | 56x higher on MI455X |
| FP16 / BF16 | 5,033 TFLOPS | 181.1 TFLOPS | 28x higher on MI455X |
| INT8 | 5,033 TOPS | 362 TOPS | 14x higher on MI455X |
| FP32 | 315 TFLOPS | 90.5 TFLOPS | 3.5x higher on MI455X |
| Platform | |||
| Interconnect | Infinity Fabric 3,600 GB/s | PCIe only | Infinity Fabric on MI455X only |
| Released | Q3 2026 | Q4 2022 | 4 years newer on MI455X |
| Precision | |||
| Supported formats | FP4FP6FP8FP16BF16FP32INT8 | FP8FP16BF16TF32FP32INT4INT8 | |
Compute: Vendor peak figures, dense and per GPU. Not measured throughput.
Source: MI455X datasheet and L40 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 | L40 |
|---|---|---|
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 | -- |
GPU.ai
UAE
|
-- | $0.78 /GPU/hr On-demand |
Vast.ai
USA
|
-- | $0.83 /GPU/hr On-demand |
Massed Compute
USA
|
-- | $0.86 /GPU/hr On-demand |
Sesterce
France
|
-- | $0.97 /GPU/hr On-demand |
Runcrate
USA
|
-- | $0.97 /GPU/hr On-demand PCIe |
Oblivus
USA
|
-- | $1.05 /GPU/hr On-demand PCIe |
Spheron
Singapore
|
-- | $1.06 /GPU/hr On-demand PCIe |
EmpirioLabs AI
USA
|
-- | $1.50 /GPU/hr On-demand |
5 providers list the MI455X and 13 the L40. Every listing is on the MI455X page and the L40 page.
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 A100
80 GB HBM2e · 2.2x the bandwidth of the L40
From $0.43 /GPU/hr Compare
-
Nvidia L40S
48 GB GDDR6 · released Q3 2023
From $0.55 /GPU/hr Compare
Our data for AMD MI455X was last updated on Sept. 14, 2026, and for Nvidia L40 on Sept. 14, 2026.