AMD MI355X
vs
Nvidia RTX 3080
The MI355X is newer, with 29x the memory and 11x the bandwidth. The RTX 3080 is cheaper right now.
At a glance
Memory
29x more on MI355X
- MI355X
- 288 GB
- RTX 3080
- 10 GB
Memory bandwidth
11x higher on MI355X
- MI355X
- 8,000 GB/s
- RTX 3080
- 760 GB/s
Cheapest on-demand
98% cheaper on RTX 3080
- MI355X
- $5.99 /GPU/hr
- RTX 3080
- $0.11 /GPU/hr
Price comparison
Median price per GPU per hour by billing type, with the cheapest listing under it.
| Billing | MI355X | RTX 3080 | Difference |
|---|---|---|---|
| On-demand | -- /GPU/hr from $5.99 | $0.15 /GPU/hr from $0.11 | |
| Reserved | No reserved listings | -- /GPU/hr from $0.12 (3 mo) | |
| Spot | -- /GPU/hr from $2.97 | -- /GPU/hr from $0.06 |
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 on-demand and spot on the MI355X and reserved and spot on the RTX 3080: 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
MI355X vs RTX 3080 price history
Weekly median on-demand price per GPU per hour
Specs comparison
| Spec | MI355X | RTX 3080 | Difference |
|---|---|---|---|
| Memory | |||
| Capacity | 288 GB HBM3e | 10 GB GDDR6X | 29x more on MI355X |
| Bandwidth | 8,000 GB/s | 760 GB/s | 11x higher on MI355X |
| Bus width | 8,192-bit | 320-bit | 26x wider on MI355X |
| Compute · dense | |||
| FP4 | 10,066.3 TFLOPS | Not supported | MI355X only |
| FP8 | 5,033.2 TFLOPS | Not supported | MI355X only |
| FP16 / BF16 | 2,516.6 TFLOPS | 59.5 TFLOPS | 42x higher on MI355X |
| INT8 | 5,033.2 TOPS | 238 TOPS | 21x higher on MI355X |
| FP32 | 157.3 TFLOPS | 29.8 TFLOPS | 5.3x higher on MI355X |
| FP64 | 78.6 TFLOPS | Not supported | MI355X only |
| Platform | |||
| Interconnect | Infinity Fabric 1,075 GB/s | PCIe only | Infinity Fabric on MI355X only |
| Board power | 1,400 W | 320 W | 4.4x higher on MI355X |
| Released | Q2 2025 | Q3 2020 | 5 years newer on MI355X |
| Precision | |||
| Supported formats | FP4FP6FP8FP16BF16FP32FP64INT8 | FP16BF16TF32FP32INT4INT8 | |
Figures are for each model's headline configuration. Where a form factor carries a different number, it is named under the figure.
Compute: Vendor peak figures, dense and per GPU. Not measured throughput.
Source: MI355X datasheet and RTX 3080 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 | MI355X | RTX 3080 |
|---|---|---|
Daytona
USA
|
$5.99 /GPU/hr On-demand | -- |
Oracle Cloud
USA
|
$8.60 /GPU/hr On-demand | -- |
DigitalOcean
USA
|
$2.97 /GPU/hr Spot | -- |
TensorWave
USA
|
$2.95 /GPU/hr Custom OAM | -- |
Crusoe
USA
|
On request Custom | -- |
Vultr
USA
|
$2.59 /GPU/hr Spot | -- |
Vast.ai
USA
|
-- | $0.11 /GPU/hr On-demand |
GPU.ai
UAE
|
-- | $0.11 /GPU/hr On-demand |
Theta EdgeCloud
Distributed
|
-- | $0.16 /GPU/hr On-demand |
Runpod
USA
|
-- | $0.17 /GPU/hr On-demand |
Salad
Distributed
|
-- | $0.14 /GPU/hr On-demand |
Similar GPUs
Other comparisons in the same class.
-
Nvidia H100
80 GB HBM3 · 58% less bandwidth than the MI355X
From $1.60 /GPU/hr Compare
-
Nvidia B200
180 GB HBM3e · released Q1 2024
From $3.75 /GPU/hr Compare
-
AMD MI325X
256 GB HBM3e · 25% less bandwidth than the MI355X
From $2.25 /GPU/hr Compare
-
Nvidia RTX 4070
12 GB GDDR6X · 34% less bandwidth than the RTX 3080
From $0.11 /GPU/hr Compare
-
Nvidia RTX 3080 Ti
12 GB GDDR6X · 20% more bandwidth than the RTX 3080
From $0.13 /GPU/hr Compare
Our data for AMD MI355X was last updated on Sept. 14, 2026, and for Nvidia RTX 3080 on Sept. 14, 2026.