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
48% cheaper on MI300X
- MI300X
- $2.59 /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 | $4.41 /GPU/hr from $2.59 | $8.50 /GPU/hr from $4.99 | 48% cheaper on MI300X |
| Reserved | $3.39 /GPU/hr from $1.61 (12 mo) | $6.25 /GPU/hr from $4.25 | 46% cheaper on MI300X |
| Spot | -- /GPU/hr from $1.60 | $5.26 /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 |
|---|---|---|
Hot Aisle
USA
|
$3.39 /GPU/hr Reserved | -- |
Denvr
Canada
|
On request Custom | -- |
DigitalOcean
USA
|
$2.59 /GPU/hr On-demand | -- |
Cyfuture AI
India
|
$2.77 /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 | -- |
Crusoe
USA
|
On request Reserved | -- |
Daytona
USA
|
-- | $7.10 /GPU/hr On-demand |
GPU.ai
UAE
|
-- | $7.89 /GPU/hr On-demand SXM |
Runpod
USA
|
-- | $7.89 /GPU/hr On-demand SXM |
Lium
Distributed
|
-- | $8.00 /GPU/hr On-demand SXM |
Vast.ai
USA
|
-- | $9.94 /GPU/hr On-demand |
EmpirioLabs AI
USA
|
-- | $16.00 /GPU/hr On-demand |
Spheron
Singapore
|
-- | $5.81 /GPU/hr Spot SXM |
GPUaaS
USA
|
-- | $5.00 /GPU/hr Custom SXM |
11 providers list the MI300X and 34 the B300. Every listing is on the MI300X page and the B300 page.
Similar GPUs
Other comparisons in the same class.
-
Nvidia H100
80 GB HBM3 · 37% less bandwidth than the MI300X
From $1.73 /GPU/hr Compare
-
Nvidia A100
80 GB HBM2e · 63% less bandwidth than the MI300X
From $0.40 /GPU/hr Compare
-
AMD MI325X
256 GB HBM3e · released Q4 2024
From $2.25 /GPU/hr Compare
-
Nvidia B200
180 GB HBM3e · released Q1 2024
From $3.75 /GPU/hr Compare
Our data for AMD MI300X was last updated on Sept. 14, 2026, and for Nvidia B300 on Sept. 14, 2026.