B200 SXM vs MI300X

BlackwellvsCDNA 3Updated 35 days ago

The NVIDIA B200 emerges as the superior choice for most AI workloads due to its overwhelming 4500 TFLOPS FP16 and 9000 TFLOPS FP8 performance, coupled with 8000 GB/s bandwidth. These specs drive faster training and inference, outweighing the MI300X's cost edge at $0.50 per hour for performance-critical applications.

B200 SXM from $3.95/hrMI300X from $1.99/hr

Specifications Compared

SpecB200MI300X
TDP1000W750W
VRAM192 GB192 GB
CUDA Cores18,432
Memory TypeHBM3eHBM3
ArchitectureBlackwellCDNA 3
Form FactorsSXM, NVLOAM
InterconnectNVLink, PCIe 6.0, InfiniBandInfinity Fabric, PCIe 5.0
Tensor Cores576
FP8 Performance9,000 TFLOPS2,614 TFLOPS
FP16 Performance4,500 TFLOPS1,307 TFLOPS
FP32 Performance90 TFLOPS163 TFLOPS
FP64 Performance45 TFLOPS81.7 TFLOPS
INT8 Performance9,000 TOPS2,614 TOPS
Memory Bandwidth8,000 GB/s5,300 GB/s

Performance Analysis

The B200's FP16 performance of 4500 TFLOPS dwarfs the MI300X's 1307 TFLOPS, enabling faster training of large language models where mixed-precision computations dominate. FP8 throughput at 9000 TFLOPS on the B200 versus 2614 TFLOPS on the MI300X accelerates inference tasks, reducing latency for serving massive models. Conversely, the MI300X leads in FP32 at 163 TFLOPS over the B200's 90 TFLOPS, benefiting workloads requiring higher precision like certain scientific simulations.

Higher memory bandwidth of 8000 GB/s on the B200 supports larger batch sizes in training and inference compared to the MI300X's 5300 GB/s, minimizing data transfer bottlenecks in memory-bound scenarios. The B200's 1000W TDP demands more power than the MI300X's 750W, potentially increasing operational costs in dense clusters. Interconnects differ as well: NVLink and PCIe 6.0 on the B200 enable superior multi-GPU scaling over Infinity Fabric and PCIe 5.0 on the MI300X.

Live Cloud Pricing

Real-time prices from 25+ providers. Updated every 60 seconds.

B200 SXM

ProviderGPU ModelVRAMHost SpecsRegionPriceStatusAction
Nebius
Nebius
NVIDIA B200 SXM
192GB VRAM
$3.95/GPU/hr
Cirrascale
Cirrascale
8×NVIDIA B200 SXM
192GB VRAM
$4.79/GPU/hr
$38.32/hr total (8×)
Cirrascale
Cirrascale
8×NVIDIA B200 SXM
192GB VRAM
$5.39/GPU/hr
$43.12/hr total (8×)
Cirrascale
Cirrascale
8×NVIDIA B200 SXM
192GB VRAM
$5.69/GPU/hr
$45.52/hr total (8×)
RunPod
RunPod
NVIDIA B200 SXM
192GB VRAM
$5.89/GPU/hr

MI300X

ProviderGPU ModelVRAMHost SpecsRegionPriceStatusAction
RunPod
RunPod
AMD Instinct MI300X
192GB VRAM
$1.99/GPU/hr
Hot Aisle
Hot Aisle
AMD Instinct MI300X
192GB VRAM
$1.99/GPU/hr
Available
Cirrascale
Cirrascale
8×AMD Instinct MI300X
192GB VRAM
$3.08/GPU/hr
$24.64/hr total (8×)
Crusoe
Crusoe
AMD Instinct MI300X
192GB VRAM
$3.45/GPU/hr
Cirrascale
Cirrascale
8×AMD Instinct MI300X
192GB VRAM
$3.47/GPU/hr
$27.76/hr total (8×)

Compare real-time pricing across 25+ providers

When to Choose the B200 SXM

Opt for the NVIDIA B200 in high-throughput AI training and inference workloads. Its 4500 TFLOPS FP16 and 9000 TFLOPS FP8 performance excel for large-scale LLM development, where speed trumps cost. The 8000 GB/s bandwidth handles massive datasets efficiently, ideal for enterprises prioritizing rapid iteration.

When to Choose the MI300X

Select the AMD Instinct MI300X for budget-conscious deployments or FP32-intensive tasks. At $0.50 per hour minimum pricing, it offers value in fine-tuning or scientific computing leveraging its 163 TFLOPS FP32 rate. Lower 750W TDP suits power-limited environments without sacrificing 192 GB VRAM capacity.

Use Cases

LLM Training
B200 SXM

The B200's 4500 TFLOPS FP16 vastly outperforms the MI300X's 1307 TFLOPS, accelerating large model training cycles.

LLM Inference
B200 SXM

With 9000 TFLOPS FP8, the B200 delivers lower latency inference than the MI300X's 2614 TFLOPS.

Fine-tuning
Either

Both offer 192 GB VRAM for model loading; choose B200 for speed or MI300X for $0.50 per hour pricing.

Stable Diffusion
B200 SXM

B200's 8000 GB/s bandwidth and high FP16 throughput handle large image generation batches better than MI300X.

Scientific Computing
MI300X

MI300X's 163 TFLOPS FP32 exceeds B200's 90 TFLOPS, suiting precision-heavy simulations.

Frequently Asked Questions

Do the B200 and MI300X have the same VRAM?

Yes, both provide 192 GB VRAM, but the B200 uses HBM3e while the MI300X uses HBM3. This equivalence supports identically sized models in training or inference.

Which has higher memory bandwidth?

The B200 offers 8000 GB/s compared to the MI300X's 5300 GB/s. Greater bandwidth on the B200 enables larger batch sizes in memory-intensive tasks.

What are the cloud pricing differences?

MI300X starts at $0.50 per hour (average $2.63 across 9 offers), cheaper than B200's $1.71 per hour (average $4.60 across 13 offers). Pricing varies by provider and region.

Which GPU is better for FP16 workloads?

The B200 dominates with 4500 TFLOPS FP16 versus MI300X's 1307 TFLOPS. This makes it ideal for AI training using half-precision.

How do TDPs compare?

B200 requires 1000W TDP, higher than MI300X's 750W. Lower TDP on MI300X reduces power costs in clusters.

What interconnects do they support?

B200 features NVLink, PCIe 6.0, and InfiniBand for multi-GPU scaling; MI300X uses Infinity Fabric and PCIe 5.0. B200's options enhance large-scale performance.

Which is cheaper to rent, the B200 or the MI300X?

Cloud rental prices for both the B200 and MI300X 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 B200 have compared to the MI300X?

The B200 has 192 GB of HBM3e memory. The MI300X has 192 GB of HBM3 memory.

Can I find B200 and MI300X 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 B200 and the MI300X?

The B200 uses the Blackwell architecture (2024) while the MI300X uses CDNA 3 (2023). The B200 delivers 3.4x the FP16 throughput and 1.5x the memory bandwidth of the MI300X.

B200 SXM vs MI300X: NVIDIA 192GB vs AMD 192GB | GPUPerHour