Specifications Compared
| Spec | GB300 SXM6 | L4 |
|---|---|---|
| TDP | 1400W | 72W |
| VRAM | 288 GB | 24 GB |
| CUDA Cores | Not published | 7,424 |
| FP4 (dense) | 13,500 TFLOPS | Not published |
| FP8 (dense) | 4,500 TFLOPS | 242 TFLOPS |
| Memory Type | HBM3e | GDDR6 |
| Architecture | Blackwell Ultra | Ada Lovelace |
| FP16 (dense) | 2,250 TFLOPS | 121 TFLOPS |
| Form Factors | SXM6 | PCIe |
| INT8 (dense) | 187.5 TOPS | 242 TOPS |
| Interconnect | NVLink, PCIe 6.0, InfiniBand | PCIe 4.0 |
| Tensor Cores | Not published | 232 |
| FP32 Performance | 75 TFLOPS | 30.3 TFLOPS |
| FP64 Performance | 1.25 TFLOPS | 0.5 TFLOPS |
| Memory Bandwidth | 8,000 GB/s | 300 GB/s |
| FP4 (with sparsity) | 18,000 TFLOPS | Not published |
| FP8 (with sparsity) | 9,000 TFLOPS | 485 TFLOPS |
| FP16 (with sparsity) | 4,500 TFLOPS | 242 TFLOPS |
| INT8 (with sparsity) | 375 TOPS | 485 TOPS |
Performance Analysis
FP16 dense throughput reaches 2250 TFLOPS on the GB300 SXM6 compared with 121 TFLOPS on the L4. This gap allows the GB300 SXM6 to finish matrix multiplications in training sessions at a rate more than eighteen times higher than the L4. FP32 performance measures 75 TFLOPS on the GB300 SXM6 against 30.3 TFLOPS on the L4. Memory bandwidth of 8000 GB/s versus 300 GB/s permits the GB300 SXM6 to sustain larger batch sizes during both training and inference without stalling on data movement. FP16 with sparsity stands at 4500 TFLOPS for the GB300 SXM6 and 242 TFLOPS for the L4 while FP8 dense reaches 4500 TFLOPS on the GB300 SXM6 versus 242 TFLOPS on the L4.
Current On-Demand Offers
Cheapest secure on-demand offer per provider that is reported in stock right now, per GPU per hour; multi-GPU instances show the whole-instance price alongside. Deploy opens the DeployGPU console for providers on the platform, otherwise the provider's own site. Stock is rechecked every minute.
GB300 SXM6
GB300 SXM6 is not offered on-demand by any provider we track right now. See the GB300 SXM6 rental page for last-seen listed prices and a price alert.
L4
| Provider | Region | GPUs | Per GPU / hr | Instance / hr | Deploy |
|---|---|---|---|---|---|
| RunPod | global | 1 | $0.59 | — | Deploy |
| Scaleway | Warsaw, Poland (WAW2) | 2 | $0.89 | $1.77 | Deploy |
2 providers in stock, 4 offers (cheapest per provider shown). All L4 offers, price history and alerts
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When to Choose the GB300 SXM6
The GB300 SXM6 variant suits large scale LLM training that requires 288 GB of memory and 8000 GB/s bandwidth. Its NVLink and InfiniBand interconnects further support multi GPU clusters that exceed the capacity of the L4 variant.
When to Choose the L4
The L4 variant fits inference tasks on compact models that stay within 24 GB of memory and operate under a 72W power envelope. Its PCIe form factor allows simple integration into standard servers without the infrastructure demands of SXM6.
Use Cases
The 288 GB memory and 2250 TFLOPS FP16 dense performance support models that exceed the 24 GB capacity of the L4.
Higher memory bandwidth of 8000 GB/s enables larger batch sizes than the 300 GB/s available on the L4.
The 4500 TFLOPS FP8 dense figure accelerates gradient updates beyond the 242 TFLOPS FP8 dense rating of the L4.
The 24 GB memory and 72W TDP suffice for standard diffusion workloads at lower power draw than the 1400W TDP of the GB300 SXM6.
FP32 performance of 75 TFLOPS combined with 8000 GB/s bandwidth handles large scientific datasets more effectively than the L4.
Frequently Asked Questions
What memory types do the GB300 SXM6 and L4 use?▾
The GB300 SXM6 variant uses 288 GB HBM3e while the L4 variant uses 24 GB GDDR6. Memory bandwidth stands at 8000 GB/s for the GB300 SXM6 family and 300 GB/s for the L4 family.
How do FP16 dense figures compare between these GPUs?▾
FP16 dense reaches 2250 TFLOPS on the GB300 SXM6 and 121 TFLOPS on the L4. The same ratio applies when comparing FP16 with sparsity at 4500 TFLOPS versus 242 TFLOPS.
How does TDP differ between the two families?▾
TDP reaches 1400W for the GB300 SXM6 family and 72W for the L4 family. These figures apply across all variants within each family.
Which form factors are used by the compared variants?▾
The GB300 SXM6 variant uses the SXM6 form factor. The L4 variant uses the PCIe form factor.
Which is cheaper to rent, the GB300 SXM6 or the L4?▾
Cloud rental prices for both the GB300 SXM6 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 SXM6 have compared to the L4?▾
The GB300 SXM6 has 288 GB of HBM3e memory. The L4 has 24 GB of GDDR6 memory.
Can I find GB300 SXM6 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 SXM6 and the L4?▾
The GB300 SXM6 uses the Blackwell Ultra architecture (2025) while the L4 uses Ada Lovelace (2023). The GB300 SXM6 delivers 18.6x the dense FP16 throughput (2,250 vs 121 TFLOPS, both without sparsity) and 26.7x the memory bandwidth of the L4.
Rent these GPUs
Each GPU page lists every current on-demand offer by provider, per GPU-hour, updated every minute.
Related comparisons
How this page is made
- Specifications come from the NVIDIA, AMD and Intel datasheets for the GB300 SXM6 and the L4. Dense and sparse throughput are listed separately.
- Prices and availability are live: every offer shown is an in-stock, on-demand listing from a provider we track, rechecked every minute.
- The written comparison (overview, performance notes, when to choose each card, verdict, use cases and FAQ) was drafted with an AI model from the specification table above and passed an automated check that rejects any figure not in that table. It was last generated on . It contains no prices; those are always read live.
- Read how we collect the data, or report an error on this page.
Next steps
- Rent GB300Every current offer by provider, daily price history and a price alert.
- Rent L4Every current offer by provider, daily price history and a price alert.
- GPU price indexHow on-demand prices for the major GPUs have moved, updated daily.
- All GPUsEvery GPU we track, with current lows and provider counts.