B200 vs RTX A4000

BlackwellvsAmpereUpdated 36 days ago

The B200 emerges as the superior choice for prevalent AI and machine learning tasks. Its 4500 TFLOPS FP16, 192 GB VRAM, and 8000 GB/s bandwidth deliver unmatched scale for training and inference, far eclipsing the A4000's capabilities despite higher $4.61 per hour average pricing.

B200 from $3.95/hrRTX A4000 from $0.08/hr

Specifications Compared

SpecB200RTX-A4000
TDP1000W140W
VRAM192 GB16 GB
CUDA Cores18,4326,144
Memory TypeHBM3eGDDR6
ArchitectureBlackwellAmpere
Form FactorsSXM, NVLPCIe
InterconnectNVLink, PCIe 6.0, InfiniBand
Tensor Cores576192
FP8 Performance9,000 TFLOPS
FP16 Performance4,500 TFLOPS19.2 TFLOPS
FP32 Performance90 TFLOPS19.2 TFLOPS
FP64 Performance45 TFLOPS
INT8 Performance9,000 TOPS
Memory Bandwidth8,000 GB/s448 GB/s

Performance Analysis

The B200 vastly outpaces the A4000 in compute throughput: its 4500 TFLOPS FP16 rating enables training large language models up to 234 times faster than the A4000's 19.2 TFLOPS. For FP32 workloads common in scientific simulations, the B200's 90 TFLOPS provides approximately 4.7 times the performance. This disparity accelerates deep learning pipelines, reducing epoch times from days to hours on B200.

Memory specifications define practical limits: 192 GB HBM3e on B200 supports batch sizes for models exceeding 100 billion parameters, while 16 GB GDDR6 on A4000 restricts users to smaller datasets or frequent swapping. The B200's 8000 GB/s bandwidth versus 448 GB/s minimizes bottlenecks in data-intensive inference, allowing 18 times faster memory access and larger effective throughputs. These factors make B200 ideal for production-scale AI, whereas A4000 handles prototyping without excessive latency.

Live Cloud Pricing

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

B200

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

RTX A4000

ProviderGPU ModelVRAMHost SpecsRegionPriceStatusAction
TensorDock
TensorDock
NVIDIA RTX A4000
16GB VRAM
$0.08/GPU/hr
Available
Vast.ai
Vast.ai
8×NVIDIA RTX A4000
16GB VRAM
$0.15/GPU/hr
$1.17/hr total (8×)
Available
Hyperstack
Hyperstack
4×NVIDIA RTX A4000
16GB VRAM
$0.15/GPU/hr
$0.60/hr total (4×)
Available
Hyperstack
Hyperstack
2×NVIDIA RTX A4000
16GB VRAM
$0.15/GPU/hr
$0.30/hr total (2×)
Available
Hyperstack
Hyperstack
NVIDIA RTX A4000
16GB VRAM
$0.15/GPU/hr
Available

Compare real-time pricing across 25+ providers

When to Choose the B200

Select the B200 for large-scale LLM training or inference where 192 GB VRAM accommodates trillion-parameter models without multi-GPU complexity. Its 4500 TFLOPS FP16 and 8000 GB/s bandwidth excel in high-batch HPC simulations, justifying $1.71 per hour starting costs for enterprises needing NVLink scalability.

When to Choose the RTX A4000

Choose the RTX A4000 for budget-conscious visualization, CAD, or small-scale fine-tuning under 16 GB VRAM limits. At $0.08 per hour, its 19.2 TFLOPS FP32 suffices for prototyping Stable Diffusion or entry-level ML, with 140W TDP enabling easy PCIe integration in workstations.

Use Cases

LLM Training
B200

B200's 192 GB VRAM and 4500 TFLOPS FP16 handle massive datasets and parameters infeasible on A4000's 16 GB.

LLM Inference
B200

9000 TFLOPS FP8 on B200 supports high-throughput serving; A4000's 19.2 TFLOPS limits scale.

Fine-tuning
Either

A4000 manages small models under 16 GB; B200 accelerates larger ones with 8000 GB/s bandwidth.

Stable Diffusion
RTX A4000

A4000's 19.2 TFLOPS FP16 suffices for image generation at $0.08 per hour; B200 overkill for single instances.

Scientific Computing
B200

B200's 90 TFLOPS FP32 and 1000W TDP power complex simulations; A4000 adequate only for modest scales.

Frequently Asked Questions

What is the VRAM difference between B200 and RTX A4000?

B200 offers 192 GB HBM3e, enabling large models, while RTX A4000 has 16 GB GDDR6 for smaller workloads. This 12-fold gap affects batch sizes in training.

How do FP16 performances compare?

B200 achieves 4500 TFLOPS FP16, over 234 times the A4000's 19.2 TFLOPS. This boosts AI training speed dramatically.

What are the cloud pricing ranges?

B200 starts at $1.71 per hour averaging $4.61 across 16 offers; A4000 at $0.08 per hour averaging $0.35 across 31 offers. A4000 suits low-budget tasks.

Which has higher memory bandwidth?

B200 provides 8000 GB/s, 18 times the A4000's 448 GB/s. This reduces data bottlenecks in inference.

What TDP do they have?

B200 requires 1000W for datacenter use; A4000 uses 140W for workstations. Power needs align with deployment scale.

When was each architecture released?

Blackwell for B200 launched in 2024; Ampere for A4000 in 2021. B200 incorporates three years of advancements.

Which is cheaper to rent, the B200 or the RTX A4000?

Cloud rental prices for both the B200 and RTX A4000 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 RTX A4000?

The B200 has 192 GB of HBM3e memory. The RTX A4000 has 16 GB of GDDR6 memory.

Can I find B200 and RTX A4000 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 RTX A4000?

The B200 uses the Blackwell architecture (2024) while the RTX A4000 uses Ampere (2021). The B200 delivers 234.4x the FP16 throughput and 17.9x the memory bandwidth of the RTX A4000.