GB300 vs L4

Blackwell UltravsAda LovelaceUpdated 36 days ago

The GB300 emerges as the superior choice for most high-performance AI use cases, driven by 288 GB VRAM, 12000 GB/s bandwidth, and 2250 TFLOPS FP16 that enable training and inference at scales impossible on the L4. While the L4 offers affordability at $0.68 per hour average, the GB300 dominates demanding workloads despite its 1400W TDP and lack of current pricing.

L4 from $0.33/hr

Specifications Compared

SpecGB300L4
TDP1400W72W
VRAM288 GB24 GB
Memory TypeHBM3eGDDR6
ArchitectureBlackwell UltraAda Lovelace
Form FactorsSXMPCIe
InterconnectNVSwitch, NVLinkPCIe 4.0
FP8 Performance4,500 TFLOPS242 TFLOPS
FP16 Performance2,250 TFLOPS121 TFLOPS
FP32 Performance90 TFLOPS30.3 TFLOPS
FP64 Performance45 TFLOPS0.5 TFLOPS
INT8 Performance4,500 TOPS242 TOPS
Memory Bandwidth12,000 GB/s300 GB/s

Performance Analysis

The GB300's FP16 performance of 2250 TFLOPS vastly outpaces the L4's 121 TFLOPS, enabling faster training of large language models where tensor operations dominate. FP32 throughput shows 90 TFLOPS for the GB300 against 30.3 TFLOPS for the L4, benefiting simulations and precision-bound tasks. FP8 figures underscore inference advantages: 4500 TFLOPS on the GB300 permits quantized model deployment at scales unattainable on the L4's 242 TFLOPS.

Memory differences profoundly impact real-world usage. The GB300's 288 GB VRAM supports batch sizes for models over 100 billion parameters, while the L4's 24 GB limits to smaller deployments. Bandwidth of 12000 GB/s on the GB300 reduces bottlenecks in data-heavy training, allowing larger effective batch sizes versus the L4's 300 GB/s, which suits lightweight inference but constrains throughput in memory-intensive scenarios.

Power efficiency tilts toward the L4 at 72W TDP compared to the GB300's 1400W, making it viable for edge computing where cooling and energy costs matter.

Live Cloud Pricing

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

L4

ProviderGPU ModelVRAMHost SpecsRegionPriceStatusAction
Vast.ai
Vast.ai
NVIDIA L4
24GB VRAM
$0.33/GPU/hr
Available
RunPod
RunPod
NVIDIA L4
24GB VRAM
$0.39/GPU/hr
TensorDock
TensorDock
NVIDIA L40S
48GB VRAM
$0.55/GPU/hr
Available
RunPod
RunPod
NVIDIA L40
48GB VRAM
$0.82/GPU/hr
Massed Compute
Massed Compute
NVIDIA L40
48GB VRAM
$0.86/GPU/hr
Available

Compare real-time pricing across 25+ providers

When to Choose the GB300

Opt for the GB300 in large-scale LLM training or fine-tuning where 288 GB HBM3e VRAM and 12000 GB/s bandwidth handle trillion-parameter models without partitioning. Its 2250 TFLOPS FP16 and NVSwitch/NVLink interconnects excel in multi-GPU clusters for scientific computing simulations requiring 90 TFLOPS FP32.

When to Choose the L4

Select the L4 for cost-sensitive inference tasks, leveraging its $0.32 per hour starting price and 72W TDP in PCIe form factors. It suffices for Stable Diffusion or smaller LLM inference with 24 GB GDDR6 and 242 TFLOPS FP8, ideal for edge deployments avoiding high infrastructure demands.

Use Cases

LLM Training
GB300

The GB300's 288 GB HBM3e VRAM and 2250 TFLOPS FP16 support training of massive models with large batch sizes. The L4's 24 GB limits scalability.

LLM Inference
L4

The L4's 72W TDP and $0.32 per hour pricing suit efficient serving of smaller quantized models at 242 TFLOPS FP8. GB300 power demands exceed typical inference needs.

Fine-tuning
GB300

GB300's 12000 GB/s bandwidth and 90 TFLOPS FP32 accelerate fine-tuning on large datasets. L4's 300 GB/s bandwidth constrains iteration speed.

Stable Diffusion
L4

L4 handles image generation inference effectively with 24 GB VRAM and PCIe compatibility at low cost. GB300 overkill for single-node creative tasks.

Scientific Computing
GB300

GB300's NVLink and 2250 TFLOPS FP16 enable complex simulations across nodes. L4's PCIe 4.0 limits multi-GPU scaling.

Frequently Asked Questions

What is the VRAM difference between GB300 and L4?

The GB300 features 288 GB HBM3e VRAM, while the L4 has 24 GB GDDR6. This twelvefold increase allows the GB300 to manage much larger models.

Which GPU has higher FP16 performance?

The GB300 achieves 2250 TFLOPS in FP16, compared to the L4's 121 TFLOPS. This gap favors the GB300 for AI training workloads.

How do power consumptions compare?

GB300 TDP is 1400W, versus L4's 72W. The L4 enables dense, low-energy deployments.

What are the current pricing details?

L4 starts at $0.32 per hour, averaging $0.68 per hour across 15 offers. GB300 has no live offers available.

What architectures do they use?

GB300 uses Blackwell Ultra from 2025; L4 uses Ada Lovelace from 2023. Blackwell provides advancements in scale and efficiency.

What form factors are supported?

GB300 uses SXM with NVSwitch/NVLink; L4 uses PCIe 4.0. This makes L4 suitable for standard servers.

Which is cheaper to rent, the GB300 or the L4?

Cloud rental prices for both the GB300 and L4 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 GB300 have compared to the L4?

The GB300 has 288 GB of HBM3e memory. The L4 has 24 GB of GDDR6 memory.

Can I find GB300 and L4 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 GB300 and the L4?

The GB300 uses the Blackwell Ultra architecture (2025) while the L4 uses Ada Lovelace (2023). The GB300 delivers 18.6x the FP16 throughput and 40.0x the memory bandwidth of the L4.