MI300X vs MI355X
MI300X starts at $2.39/GPU-hour on-demand; MI355X starts at $5.99/GPU-hour on-demand. Compare the exact variants, memory and published specifications below. GPU spec numbers are not benchmarks.
60.1% cheaper at MI300X.
updated 2026-10-12. Price alone does not establish equivalent capacity or performance.
MI300X
MI355X
Spec sheet
| MI300X | MI355X | |
|---|---|---|
| Spec variant | MI300X | MI355X |
| Architecture | CDNA 3 | CDNA 4 |
| VRAM (spec 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 |
Rental price per manufacturer-rated FP16 compute: MI300X $1.83 per PFLOP-hour vs MI355X $2.40. Formula: cheapest $/hr ÷ dense FP16 PFLOPS (1 PFLOP = 1000 TFLOPS). This uses MI300X and MI355X, whose datasheets may differ from the variants above. It is not measured job throughput. Specs: MI300X manufacturer, MI355X manufacturer.
What they cost to rent (2026-10-12)
| MI300X | MI355X | |
|---|---|---|
| Cheapest on-demand $/hr | $2.39 | $5.99 |
| Cheapest spot/community $/hr | – | $2.59 |
| Cheapest source | RunPod | Daytona |
| Providers offering it | 5 | 2 |
Cheapest on-demand rate; the cheaper one is highlighted. Spot/marketplace tiers shown on the individual pages.
FAQ
MI300X is cheaper: the MI300X rents from $2.39 per GPU-hour and the MI355X from $5.99 on-demand, updated 2026-10-12.
The largest recorded MI300X variant has 192 GB and the largest MI355X variant has 288 GB. Other variants may have less memory. The MI355X has more.
Compare more rental options: the screener · price movers · methodology.