AMD MI300X
vs
Nvidia B300
The B300 is newer, with 50% more memory and 51% more bandwidth. The MI300X is typically cheaper.
At a glance
Memory
50% more on B300
- MI300X
- 192 GB
- B300
- 288 GB
Memory bandwidth
51% higher on B300
- MI300X
- 5.30 TB/s
- B300
- 8.00 TB/s
Cheapest on-demand
52% cheaper on MI300X
- MI300X
- $2.39 /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 | MI300X | B300 | Difference |
|---|---|---|---|
| On-demand | $2.92 /GPU/hr from $2.39 | $9.15 /GPU/hr from $4.99 | 68% cheaper on MI300X |
| Reserved | $2.81 /GPU/hr from $1.63 (12 mo) | $5.78 /GPU/hr from $4.25 | 51% cheaper on MI300X |
| Spot | -- /GPU/hr from $1.76 | $5.72 /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 spot on the MI300X: 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
MI300X vs B300 price history
Weekly median on-demand price per GPU per hour
Specs comparison
| Spec | MI300X | B300 | Difference |
|---|---|---|---|
| Memory | |||
| Capacity | 192 GB HBM3 | 288 GB HBM3e | 50% more on B300 |
| Bandwidth | 5,300 GB/s | 8,000 GB/s | 51% higher on B300 |
| Bus width | 8,192-bit | 8,192-bit | Identical |
| Compute · dense | |||
| FP4 | Not supported | 14,000 TFLOPS | B300 only |
| FP8 | 2,614.9 TFLOPS | 4,500 TFLOPS | 72% higher on B300 |
| FP16 / BF16 | 1,307.4 TFLOPS | 2,250 TFLOPS | 72% higher on B300 |
| INT8 | 2,614.9 TOPS | 153.5 TOPS | 17x higher on MI300X |
| FP32 | 163.4 TFLOPS | 75 TFLOPS | 2.2x higher on MI300X |
| FP64 | 81.7 TFLOPS | 1.2 TFLOPS | 68x higher on MI300X |
| Platform | |||
| Interconnect | Infinity Fabric 896 GB/s | NVLink 1,800 GB/s | 2x higher on B300 |
| Board power | 750 W | 1,100 W | 47% higher on B300 |
| Released | Q4 2023 | Q1 2025 | 15 months newer on B300 |
| Precision | |||
| Supported formats | FP8FP16BF16TF32FP32FP64INT8 | FP4FP6FP8FP16BF16TF32FP32FP64INT8 | |
Compute: Vendor peak figures, dense and per GPU. Not measured throughput.
Source: MI300X 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 | MI300X | B300 |
|---|---|---|
Runpod
USA
|
$2.39 /GPU/hr On-demand | -- |
Hot Aisle
USA
|
$2.99 /GPU/hr On-demand | -- |
Denvr
Canada
|
On request Custom | -- |
DigitalOcean
USA
|
$2.59 /GPU/hr On-demand | -- |
Cyfuture AI
India
|
$2.81 /GPU/hr On-demand | -- |
Oracle Cloud
USA
|
$6.00 /GPU/hr On-demand | -- |
Azure
USA
|
$7.86 /GPU/hr On-demand | -- |
Cirrascale
USA
|
$3.12 /GPU/hr Reserved | -- |
Daytona
USA
|
-- | $7.10 /GPU/hr On-demand |
UpCloud
Finland
|
-- | $7.99 /GPU/hr On-demand SXM |
Lium
Distributed
|
-- | $8.00 /GPU/hr On-demand SXM |
Verda
Finland
|
-- | $10.48 /GPU/hr On-demand SXM |
Spheron
Singapore
|
-- | $12.41 /GPU/hr On-demand SXM |
Runcrate
USA
|
-- | $14.30 /GPU/hr On-demand NVL |
EmpirioLabs AI
USA
|
-- | $16.00 /GPU/hr On-demand |
GPUaaS
USA
|
-- | $5.00 /GPU/hr Custom SXM |
11 providers list the MI300X and 37 the B300. Every listing is on the MI300X page and the B300 page.
Similar GPUs
Other comparisons in the same class.
Our data for AMD MI300X was last updated on Sept. 14, 2026, and for Nvidia B300 on Sept. 14, 2026.