AMD MI355X
vs
Nvidia B300
Both have 288 GB of memory and the same bandwidth. The B300 is cheaper right now.
At a glance
Memory
Identical
- MI355X
- 288 GB
- B300
- 288 GB
Memory bandwidth
Identical
- MI355X
- 8.00 TB/s
- B300
- 8.00 TB/s
Cheapest on-demand
17% cheaper on B300
- MI355X
- $5.99 /GPU/hr
- B300
- $4.99 /GPU/hr
Price comparison
Median price per GPU per hour by billing type, with the cheapest listing under it.
| Billing | MI355X | B300 | Difference |
|---|---|---|---|
| On-demand | -- /GPU/hr from $5.99 | $8.99 /GPU/hr from $4.99 | |
| Reserved | No reserved listings | $5.43 /GPU/hr from $4.25 | |
| Spot | -- /GPU/hr from $3.44 | $5.57 /GPU/hr from $4.08 |
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: 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 B300 price history
Weekly median on-demand price per GPU per hour
Specs comparison
| Spec | MI355X | B300 | Difference |
|---|---|---|---|
| Memory | |||
| Capacity | 288 GB HBM3e | 288 GB HBM3e | Identical |
| Bandwidth | 8,000 GB/s | 8,000 GB/s | Identical |
| Bus width | 8,192-bit | 8,192-bit | Identical |
| Compute · dense | |||
| FP4 | 10,066.3 TFLOPS | 14,000 TFLOPS | 39% higher on B300 |
| FP8 | 5,033.2 TFLOPS | 4,500 TFLOPS | 12% higher on MI355X |
| FP16 / BF16 | 2,516.6 TFLOPS | 2,250 TFLOPS | 12% higher on MI355X |
| INT8 | 5,033.2 TOPS | 153.5 TOPS | 33x higher on MI355X |
| FP32 | 157.3 TFLOPS | 75 TFLOPS | 2.1x higher on MI355X |
| FP64 | 78.6 TFLOPS | 1.2 TFLOPS | 66x higher on MI355X |
| Platform | |||
| Interconnect | Infinity Fabric 1,075 GB/s | NVLink 1,800 GB/s | 67% higher on B300 |
| Board power | 1,400 W | 1,100 W | 27% higher on MI355X |
| Released | Q2 2025 | Q1 2025 | |
| Precision | |||
| Supported formats | FP4FP6FP8FP16BF16FP32FP64INT8 | FP4FP6FP8FP16BF16TF32FP32FP64INT8 | |
Compute: Vendor peak figures, dense and per GPU. Not measured throughput.
Source: MI355X datasheet and B300 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 | B300 |
|---|---|---|
Daytona
USA
|
$5.99 /GPU/hr On-demand | -- |
Oracle Cloud
USA
|
$8.60 /GPU/hr On-demand | -- |
DigitalOcean
USA
|
$5.50 /GPU/hr Spot | -- |
TensorWave
USA
|
$2.95 /GPU/hr Custom OAM | -- |
Crusoe
USA
|
On request Custom | -- |
Vultr
USA
|
$2.59 /GPU/hr Spot | -- |
GPU.ai
UAE
|
-- | $8.99 /GPU/hr On-demand SXM |
Runpod
USA
|
-- | $8.99 /GPU/hr On-demand SXM |
Vast.ai
USA
|
-- | $9.94 /GPU/hr On-demand |
Spheron
Singapore
|
-- | $5.84 /GPU/hr Spot SXM |
Lium
Distributed
|
-- | $6.00 /GPU/hr Spot SXM |
GPUaaS
USA
|
-- | $5.00 /GPU/hr Custom SXM |
Packet·ai
USA
|
-- | On request Custom SXM |
TheAI Cloud
UAE
|
-- | $4.70 /GPU/hr Reserved SXM |
6 providers list the MI355X and 34 the B300. Every listing is on the MI355X page and the B300 page.
Similar GPUs
Other comparisons in the same class.
Our data for AMD MI355X was last updated on Sept. 14, 2026, and for Nvidia B300 on Sept. 14, 2026.