Specifications Compared
| Spec | MI250X | MI355X |
|---|---|---|
| TDP | 560W | 1400W |
| VRAM | 128 GB | 288 GB |
| FP4 (dense) | Not published | 10,100 TFLOPS |
| FP8 (dense) | Not published | 5,000 TFLOPS |
| Memory Type | HBM2e | HBM3e |
| Architecture | CDNA 2 | CDNA 4 |
| FP16 (dense) | 383 TFLOPS | 2,500 TFLOPS |
| Form Factors | OAM | OAM |
| INT8 (dense) | 383 TOPS | 5,000 TOPS |
| Interconnect | Infinity Fabric, PCIe 4.0 | Infinity Fabric, PCIe 5.0 |
| FP32 Performance | 47.9 TFLOPS | 157.3 TFLOPS |
| FP64 Performance | 47.9 TFLOPS | 78.6 TFLOPS |
| Memory Bandwidth | 3,277 GB/s | 8,000 GB/s |
| FP8 (with sparsity) | Not published | 10,100 TFLOPS |
| FP16 (with sparsity) | Not published | 5,000 TFLOPS |
| INT8 (with sparsity) | Not published | 10,100 TOPS |
Performance Analysis
These ratios indicate the MI355X handles dense matrix operations for training at more than six times the rate of the MI250X. Memory bandwidth of 8000 GB/s on the MI355X compared with 3277 GB/s on the MI250X supports larger batch sizes during inference workloads that rely on dense FP16 operations.
Current On-Demand Offers
Cheapest secure on-demand offer per provider that is reported in stock right now, per GPU per hour; multi-GPU instances show the whole-instance price alongside. Deploy opens the DeployGPU console for providers on the platform, otherwise the provider's own site. Stock is rechecked every minute.
MI250X
MI250X is not offered on-demand by any provider we track right now. See the MI250X rental page for last-seen listed prices and a price alert.
MI355X
MI355X is not offered on-demand by any provider we track right now. See the MI355X rental page for last-seen listed prices and a price alert.
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When to Choose the MI250X
The MI250X suits environments constrained by 560W TDP limits where FP16 dense performance of 383 TFLOPS meets existing workload demands. Its 128 GB HBM2e capacity remains adequate for inference tasks that do not require the 288 GB available on newer models.
When to Choose the MI355X
The MI355X fits deployments that need FP16 dense performance of 2500 TFLOPS and 8000 GB/s bandwidth to accommodate expanded batch sizes. Its 288 GB HBM3e and PCIe 5.0 interconnect address scaling requirements beyond the 3277 GB/s and PCIe 4.0 limits of prior hardware.
Use Cases
The MI355X supplies 2500 TFLOPS FP16 dense performance against 383 TFLOPS on the MI250X.
Memory bandwidth of 8000 GB/s on the MI355X exceeds 3277 GB/s and enables larger batches than the MI250X.
FP32 performance reaches 157.3 TFLOPS on the MI355X compared with 47.9 TFLOPS on the MI250X.
The MI355X provides 5000 TFLOPS FP8 dense performance that the MI250X does not list.
Frequently Asked Questions
What is the FP16 dense performance difference between MI250X and MI355X?▾
The MI250X lists 383 TFLOPS FP16 dense while the MI355X lists 2500 TFLOPS FP16 dense. This difference affects throughput for dense matrix operations in training.
What TDP ratings apply to the MI250X and MI355X?▾
The MI250X operates at 560W TDP and the MI355X operates at 1400W TDP. Power budgets must account for the 2.5 times increase.
Which interconnects do these GPUs support?▾
Both use Infinity Fabric while the MI250X includes PCIe 4.0 and the MI355X includes PCIe 5.0. The newer standard improves host communication on the MI355X.
Do the GPUs publish sparse FP16 figures?▾
The MI355X lists 5000 TFLOPS FP16 with sparsity while the MI250X publishes only the 383 TFLOPS dense figure. Direct comparison stays limited to dense ratings.
Which is cheaper to rent, the MI250X or the MI355X?▾
Cloud rental prices for both the MI250X and MI355X vary by provider, configuration, and availability. This page shows live pricing from 25+ providers updated every 60 seconds. Scroll to the Live Cloud Pricing section to compare current rates.
How much VRAM does the MI250X have compared to the MI355X?▾
The MI250X has 128 GB of HBM2e memory. The MI355X has 288 GB of HBM3e memory.
Can I find MI250X and MI355X GPUs available to rent right now?▾
Yes. This page shows real-time availability across 25+ cloud GPU providers. The Live Cloud Pricing section displays only in-stock offers with current pricing.
What is the main difference between the MI250X and the MI355X?▾
The MI250X uses the CDNA 2 architecture (2021) while the MI355X uses CDNA 4 (2025). The MI355X delivers 6.5x the dense FP16 throughput (2,500 vs 383 TFLOPS, both without sparsity) and 2.4x the memory bandwidth of the MI250X.
Rent these GPUs
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Related comparisons
How this page is made
- Specifications come from the NVIDIA, AMD and Intel datasheets for the MI250X and the MI355X. Dense and sparse throughput are listed separately.
- Prices and availability are live: every offer shown is an in-stock, on-demand listing from a provider we track, rechecked every minute.
- The written comparison (overview, performance notes, when to choose each card, verdict, use cases and FAQ) was drafted with an AI model from the specification table above and passed an automated check that rejects any figure not in that table. It was last generated on . It contains no prices; those are always read live.
- Read how we collect the data, or report an error on this page.
Next steps
- Rent MI250XEvery current offer by provider, daily price history and a price alert.
- Rent MI355XEvery current offer by provider, daily price history and a price alert.
- GPU price indexHow on-demand prices for the major GPUs have moved, updated daily.
- All GPUsEvery GPU we track, with current lows and provider counts.