COMPARE / B200 VS MI300X
B200 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 B200
$2.490/hr
SpotGPUs · median $6.25 · 36 providers
CHEAPEST MI300X
$0.500/hr
RunPod · median $7.20 · 13 providers
CHEAPER RIGHT NOW
MI300X
live panel, 2026-09-27
| B200 | MI300X | |
|---|---|---|
| MAKER | NVIDIA | AMD |
| ARCHITECTURE | Blackwell | CDNA 3 |
| LAUNCHED | 2025 | 2023 |
| MEMORY | 192 GB HBM3e | 192 GB HBM3 |
| MEMORY BANDWIDTH | 8 TB/s | 5.3 TB/s |
| TENSOR COMPUTE | 2.25 PFLOPS FP16/BF16 tensor dense; 4.5 PFLOPS FP8; 9 PFLOPS FP4 dense | 1,307 TFLOPS FP16/BF16 dense (2,614 sparse); 2,614 TFLOPS FP8 dense |
| POWER DRAW | 1,000 W | 750 W |
| INTERCONNECT | NVLink 5.0 1.8 TB/s | Infinity Fabric 896 GB/s |
HOW TO CHOOSE
B200 vs MI300X
On paper - B200 (Blackwell): 192 GB HBM3e, 8 TB/s bandwidth, 1,000 W. MI300X (CDNA 3): 192 GB HBM3, 5.3 TB/s bandwidth, 750 W. The availability question: NVIDIA's current flagship against the AMD chip that is actually rentable everywhere today - spec-sheet gap versus panel reality.
MI300X vs B200
On paper - B200 (Blackwell): 192 GB HBM3e, 8 TB/s bandwidth, 1,000 W. MI300X (CDNA 3): 192 GB HBM3, 5.3 TB/s bandwidth, 750 W. The availability question: NVIDIA's current flagship against the AMD chip that is actually rentable everywhere today - spec-sheet gap versus panel reality.
Workload fit
B200: frontier pre-training, fp4 inference, large moe training. MI300X: large-model inference, memory-bound training, cost-optimized clusters.
B200 VS MI300X - FAQ
Which is cheaper to rent, B200 or MI300X?
By today's published on-demand rates: B200 starts at $2.490/GPU/hr (median $6.25, 36 providers) and MI300X starts at $0.500/GPU/hr (median $7.20, 13 providers). The cheapest live listing is the MI300X at RunPod. Figures recompute from the panel on every refresh.
B200 or MI300X - which should I rent?
B200: The B200 is Blackwell's datacenter flagship: roughly 2.3x the H100's dense compute, a new FP4 precision that doubles effective inference throughput, 192 GB at 8 TB/s, and NVLink 5 at 1.8 TB/s. 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 B200 and MI300X?
36 providers publish B200 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: B200 · MI300X · all comparisons