MI300X vs MI355X
Datasheet specs side by side, plus what each card actually costs to rent today across every provider we track.
MI300X
MI355X
Spec sheet
| MI300X | MI355X | |
|---|---|---|
| Architecture | CDNA 3 | CDNA 4 |
| VRAM (max variant) | 192 GB | 288 GB |
| FP16 TFLOPS (dense) | 1307 | 2500 |
| Memory bandwidth | 5300 GB/s | 8000 GB/s |
| TDP | 750 W | 1400 W |
| Interconnect | Infinity Fabric | Infinity Fabric |
| Launched | 2023 | 2025 |
What they cost to rent (2026-07-18)
| MI300X | MI355X | |
|---|---|---|
| Cheapest on-demand $/hr | $2.19 | n/a |
| Cheapest spot/community $/hr | – | $2.59 |
| Cheapest source | RunPod | n/a |
| Providers offering it | 2 | 1 |
Cheapest verified on-demand rate per side from today's snapshot; highlighted = cheaper. Spot/marketplace tiers shown on the individual pages.
FAQ
Which has more VRAM, MI300X or MI355X?
The MI300X has 192 GB and the MI355X has 288 GB. The MI355X has more.
Prices render from the live dataset each build. More: the screener · price movers · methodology.