B200 NVL vs RTX A4000

BlackwellvsAmpereUpdated 35 days ago

The B200 emerges as the clear winner for dominant AI/ML use cases like LLM training and inference, where 4500 TFLOPS FP16, 192 GB VRAM, and 8000 GB/s bandwidth crush the A4000's 19.2 TFLOPS and 16 GB limits. Despite higher $10.50 per hour cost, its performance yields superior time-to-result and scalability in cloud environments.

B200 NVL 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

Peak FP16 performance reveals stark contrasts: the B200 achieves 4500 TFLOPS compared to the A4000's 19.2 TFLOPS, enabling dramatically faster neural network training and inference on large datasets. This delta stems from Blackwell's tensor core advancements, allowing the B200 to process models infeasible on Ampere hardware. FP32 rates further underscore superiority, with B200 at 90 TFLOPS versus 19.2 TFLOPS, benefiting general compute alongside AI tasks.

Memory specifications transform real-world usability: 192 GB HBM3e on the B200 supports enormous batch sizes for stable training of billion-parameter LLMs, while 16 GB GDDR6 on the A4000 limits to smaller models or frequent swapping. Bandwidth of 8000 GB/s versus 448 GB/s accelerates data movement, reducing bottlenecks in memory-bound workloads like diffusion models. Consequently, the B200 handles production-scale inference at FP8 speeds of 9000 TFLOPS, far outpacing the A4000 in throughput-critical scenarios.

Power demands reflect these capabilities: the B200's 1000W TDP suits dense server racks, whereas the A4000's 140W fits laptops or low-density nodes, trading efficiency for raw scale.

Live Cloud Pricing

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

B200 NVL

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 NVL

Opt for the B200 in large-scale AI training or inference where models exceed 16 GB VRAM, such as full fine-tuning of LLMs with 192 GB HBM3e enabling massive batches. Its 4500 TFLOPS FP16 and 8000 GB/s bandwidth deliver unmatched speed for datacenter deployments via NVLink or PCIe 6.0, justifying $10.50 per hour for hyperscale productivity.

When to Choose the RTX A4000

Select the RTX A4000 for cost-sensitive visualization, prototyping, or small-scale inference at $0.08 per hour starting price across 28 offers. With 19.2 TFLOPS FP16/FP32 and 140W TDP in PCIe form, it powers Stable Diffusion or scientific sims without overprovisioning, ideal for multi-GPU clusters on tight budgets.

Use Cases

LLM Training
B200 NVL

B200's 192 GB HBM3e VRAM and 4500 TFLOPS FP16 handle massive models and batches infeasible on A4000's 16 GB GDDR6.

LLM Inference
B200 NVL

9000 TFLOPS FP8 and 8000 GB/s bandwidth on B200 enable high-throughput serving; A4000's 19.2 TFLOPS FP16 suits only small models.

Fine-tuning
B200 NVL

B200 supports large parameter counts with 90 TFLOPS FP32 and vast memory, outperforming A4000 for efficient iterations.

Stable Diffusion
RTX A4000

A4000's 16 GB VRAM and 19.2 TFLOPS suffice for image gen at $0.37 average hourly cost; B200 overkill for single-instance use.

Scientific Computing
Either

A4000 fits FP32-heavy sims at low 140W TDP; B200 accelerates memory-intensive tasks with 192 GB and 8000 GB/s bandwidth.

Frequently Asked Questions

What is the VRAM difference between B200 and RTX A4000?

The B200 offers 192 GB HBM3e VRAM, dwarfing the RTX A4000's 16 GB GDDR6. This enables B200 to load entire large LLMs without partitioning, while A4000 requires model sharding for big tasks.

How do cloud prices compare for these GPUs?

B200 NVL pricing starts at $10.50 per hour with one offer. RTX A4000 begins at $0.08 per hour, averaging $0.37 across 28 live offers, suiting budget deployments.

Which has higher FP16 performance?

B200 delivers 4500 TFLOPS FP16, over 234 times the RTX A4000's 19.2 TFLOPS. This gap accelerates AI training significantly on B200.

What are the power requirements?

B200 demands 1000W TDP for datacenter use. RTX A4000 uses 140W, fitting workstations or dense low-power clusters.

Can RTX A4000 handle LLM inference?

RTX A4000 manages small LLMs with 16 GB VRAM and 19.2 TFLOPS FP16. Larger models need B200's 192 GB and 9000 TFLOPS FP8 for efficient serving.

What interconnects does B200 support?

B200 includes NVLink, PCIe 6.0, and InfiniBand for multi-GPU scaling. RTX A4000 lacks specified high-speed links, limiting to PCIe clusters.

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.