COMPARE / A100 80GB SXM VS MI300X
A100 80GB SXM vs MI300X
Specs from the chip makers' datasheets; prices from the live Compute Cafe panel, refreshed hourly. Every rate is an on-demand published price with a source receipt.
CHEAPEST A100 80GB SXM
$0.290/hr
SpotGPUs · median $5.12 · 7 providers
CHEAPEST MI300X
$0.500/hr
RunPod · median $7.20 · 13 providers
CHEAPER RIGHT NOW
A100 80GB SXM
live panel, 2026-09-27
| A100 80GB SXM | MI300X | |
|---|---|---|
| MAKER | NVIDIA | AMD |
| ARCHITECTURE | Ampere | CDNA 3 |
| LAUNCHED | 2020 | 2023 |
| MEMORY | 80 GB HBM2e | 192 GB HBM3 |
| MEMORY BANDWIDTH | 2.0 TB/s | 5.3 TB/s |
| TENSOR COMPUTE | 312 TFLOPS FP16/BF16 tensor dense (624 sparse) | 1,307 TFLOPS FP16/BF16 dense (2,614 sparse); 2,614 TFLOPS FP8 dense |
| POWER DRAW | 400 W | 750 W |
| INTERCONNECT | NVLink 3.0 600 GB/s | Infinity Fabric 896 GB/s |
HOW TO CHOOSE
A100 80GB SXM vs MI300X
AMD's MI300X carries 192 GB and 5.3 TB/s - far more headroom for large-model inference - at often comparable panel prices. The trade is CUDA maturity versus raw memory.
Workload fit
A100 80GB SXM: fine-tuning up to 70b, multi-gpu training, large-model inference. MI300X: large-model inference, memory-bound training, cost-optimized clusters.
A100 80GB SXM VS MI300X - FAQ
Which is cheaper to rent, A100 80GB SXM or MI300X?
By today's published on-demand rates: A100 80GB SXM starts at $0.290/GPU/hr (median $5.12, 7 providers) and MI300X starts at $0.500/GPU/hr (median $7.20, 13 providers). The cheapest live listing is the A100 80GB SXM at SpotGPUs. Figures recompute from the panel on every refresh.
A100 80GB SXM or MI300X - which should I rent?
A100 80GB SXM: The A100 80GB was the standard large-model training chip of 2021-2023 and still anchors an enormous installed base. 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. The side-by-side spec table and live price rows above give the full picture.
Where can I rent A100 80GB SXM and MI300X?
7 providers publish A100 80GB SXM rates and 13 publish MI300X rates on Compute Cafe. Every row links to the provider's own published price - committed-use and reserved rates are excluded.
Full pricing: A100 80GB SXM · MI300X · all comparisons