GPU MODELS / ALTERNATIVES TO MI355X
Alternatives to the MI355X
The MI355X is AMD's CDNA 4 flagship: 288 GB of HBM3e aimed squarely at large-model inference and training, with FP4 support matching Blackwell Ultra's pitch. Its presence in cloud catalogs is still thin - where it appears, it is the CUDA-alternative bet at the high end.
People usually compare the MI355X against B300, MI300X. Prices below are live on-demand published rates from the panel.
LOADING LIVE DATA...
| Alternative | Memory | Bandwidth | Cheapest live rate | Head to head |
|---|---|---|---|---|
| B300 | 288 GB HBM3e | 8 TB/s | - | MI355X vs B300 |
| MI300X | 192 GB HBM3 | 5.3 TB/s | - | MI355X vs MI300X |
WHEN EACH ALTERNATIVE WINS
B300
Same 288 GB / 8 TB/s class, competing directly. NVIDIA brings CUDA maturity; AMD brings supply and often price. The real comparison is your stack's ROCm support.
MI300X
The MI300X's 192 GB is already proven in clouds; the MI355X adds memory and FP4. For current large-model serving, the older part has the ecosystem track record.
MI355X ALTERNATIVES - FAQ
What is the best alternative to the MI355X?
It depends on the workload. B300: The B300 (Blackwell Ultra) is NVIDIA's inference-first Blackwell refresh: 288 GB of HBM3e - half again the B200's memory - with FP4 throughput tuned for reasoning models that generate long chains of thought. MI300X: The MI300X is AMD's serious answer to Hopper: more memory (192 GB) and more bandwidth (5.3 TB/s) than any NVIDIA part before Blackwell, at panel prices that frequently undercut H100. Live rates for each are in the table above.
Why look for MI355X alternatives?
Anything requiring CUDA-specific tooling without a ROCm port.
How much does the MI355X cost compared to its alternatives?
Each alternative's current cheapest published rate is listed in the table above; figures recompute hourly from provider-published prices.