MI300X vs B200
Datasheet specs side by side, plus what each card actually costs to rent today across every provider we track.
MI300X
B200
Spec sheet
| MI300X | B200 | |
|---|---|---|
| Architecture | CDNA 3 | Blackwell |
| VRAM (max variant) | 192 GB | 180 GB |
| FP16 TFLOPS (dense) | 1307 | 2250 |
| Memory bandwidth | 5300 GB/s | 8000 GB/s |
| TDP | 750 W | 1000 W |
| Interconnect | Infinity Fabric | NVLink 1800GB/s |
| Launched | 2023 | 2024 |
Computed price-performance at today's cheapest on-demand rates: MI300X $1.68 per PFLOP-hour vs B200 $1.56. Formula: cheapest $/hr ÷ dense FP16 PFLOPS (1 PFLOP = 1000 TFLOPS). Specs from vendor datasheets (source, source).
What they cost to rent (2026-07-08)
| MI300X | B200 | |
|---|---|---|
| Cheapest on-demand $/hr | $2.19 | $3.50 |
| Cheapest spot $/hr | – | $5.98 |
| Cheapest source | RunPod | Vultr |
| Providers offering it | 2 | 11 |
Cheapest verified on-demand rate per side from today's snapshot; highlighted = cheaper. Spot/marketplace tiers shown on the individual pages.
Prices render from the live dataset each build. More: the screener · price movers · methodology.