Stability AIby Stability AI
Stable Diffusion XL 1.0 (3.5B) VRAM & Cloud GPU Sizer
Flagship 3.5B latent diffusion model with dual text encoders for photorealistic image generation. Use this interactive calculator to compute exact GPU memory requirements across FP16, FP8, INT4, QLoRA, and Full Fine-Tuning.
Inference VRAM (INT4 AWQ)
~3.66 GB
1x RTX 3060 (12GB) or RTX 4060 Ti (16GB)Native Precision (FP16 / BF16)
~8.38 GB
Fits on 1x 24GB GPUQLoRA 4-bit Training
~4.6 GB
1x RTX 3090 / 4090 (24GB LoRA)Interactive VRAM Sizer & Live Cloud Pricing Matrix Active
Popular Model Presets
Auto-ArchitectedB
0.5B (Edge)7B14B32B70B140B+
2 B/param
tokens
reqs
Minimum Required VRAMActive
8.38GB
Recommended Target:9.64 GB(+15% buffer)
Suggested Minimum GPU Tier:
1x RTX 3090 / 4090 (24GB)
VRAM Memory Footprint Breakdown
Sum: 8.38 GBModel Weights
6.52 GB
KV-Cache Context
0.06 GB
Activations
0.3 GB
CUDA & Runtime
1.5 GB
Estimated Decoding Speed (Tokens/sec):
RTX 4090: 100.4 t/sA100 (80GB): 203.2 t/sH100 (80GB): 333.8 t/s
Live Cloud GPU Cost & Pricing Engine
33 Available NodesReal-time verified pricing across RunPod, Lambda Labs, Vast.ai, AWS, GCP, and specialized clouds.
Lowest Cost Compatible OptionNVIDIA RTX 3090 on Vast.ai (24GB VRAM)
Spot Rate$0.17 / 1h
Rent NodeBuy vs. Rent TCO LabHardware break-even simulator
Providers:
| GPU & Architecture | Provider | Total VRAM | Spot (1h) | On-Demand (1h) | Action |
|---|---|---|---|---|---|
NVIDIA RTX 3090 Ampere•PCIe 4.0 | Vast.ai | 24 GB | $0.17($0.17/hr) | $0.23($0.23/hr) | Rent |
NVIDIA RTX 3090Popular Ampere•PCIe 4.0 | RunPod | 24 GB | $0.22($0.22/hr) | $0.34($0.34/hr) | Rent |
NVIDIA L4 Ada Lovelace•PCIe 4.0 | GCP (G2-standard-8) | 24 GB | $0.28($0.28/hr) | $0.84($0.84/hr) | Rent |
NVIDIA RTX 4090 Ada Lovelace•PCIe 4.0 | Vast.ai | 24 GB | $0.32($0.32/hr) | $0.48($0.48/hr) | Rent |
NVIDIA A10G Ampere•PCIe 4.0 | Lambda Labs | 24 GB | $0.40($0.40/hr) | $0.60($0.60/hr) | Rent |
NVIDIA RTX 4090Popular Ada Lovelace•PCIe 4.0 | RunPod | 24 GB | $0.44($0.44/hr) | $0.69($0.69/hr) | Rent |
NVIDIA A10G Ampere•PCIe 4.0 | AWS (EC2 g5.xlarge) | 24 GB | $0.45($0.45/hr) | $1.01($1.01/hr) | Rent |
NVIDIA RTX 5090 Blackwell•PCIe 5.0 | Vast.ai | 32 GB | $0.58($0.58/hr) | $0.85($0.85/hr) | Rent |
NVIDIA L40SPopular Ada Lovelace•PCIe 4.0 | RunPod | 48 GB | $0.65($0.65/hr) | $0.94($0.94/hr) | Rent |
NVIDIA L40S Ada Lovelace•PCIe 4.0 | Lambda Labs | 48 GB | $0.69($0.69/hr) | $0.99($0.99/hr) | Rent |
NVIDIA RTX 5090Popular Blackwell•PCIe 5.0 | RunPod | 32 GB | $0.69($0.69/hr) | $0.99($0.99/hr) | Rent |
NVIDIA A100 PCIe (40GB) Ampere•PCIe 4.0 | Lambda Labs | 40 GB | $0.85($0.85/hr) | $1.10($1.10/hr) | Rent |
NVIDIA RTX 6000 Ada Ada Lovelace•PCIe 4.0 | RunPod | 48 GB | $0.85($0.85/hr) | $1.25($1.25/hr) | Rent |
2x NVIDIA RTX 4090 Ada Lovelace•PCIe 4.0 | RunPod | 48 GB(2x 24GB) | $0.88($0.88/hr) | $1.38($1.38/hr) | Rent |
NVIDIA A100 SXM4 (80GB)Popular Ampere•NVLink-3 (600 GB/s) | Lambda Labs | 80 GB | $1.25($1.25/hr) | $1.69($1.69/hr) | Rent |
2x NVIDIA RTX 5090 Blackwell•PCIe 5.0 | RunPod | 64 GB(2x 32GB) | $1.38($1.38/hr) | $1.98($1.98/hr) | Rent |
NVIDIA A100 SXM4 (80GB) Ampere•NVLink-3 (600 GB/s) | RunPod | 80 GB | $1.39($1.39/hr) | $1.89($1.89/hr) | Rent |
NVIDIA A100 SXM4 (80GB) Ampere•NVLink-3 (600 GB/s) | GCP (a2-ultragpu-1g) | 80 GB | $1.75($1.75/hr) | $3.67($3.67/hr) | Rent |
4x NVIDIA RTX 4090 Ada Lovelace•PCIe 4.0 | RunPod | 96 GB(4x 24GB) | $1.76($1.76/hr) | $2.76($2.76/hr) | Rent |
NVIDIA H100 SXM5 (80GB) Hopper•NVLink-4 (900 GB/s) + InfiniBand | Nebius AI Studio | 80 GB | $2.19($2.19/hr) | $2.85($2.85/hr) | Rent |
NVIDIA H100 SXM5 (80GB)Popular Hopper•NVLink-4 (900 GB/s) | Lambda Labs | 80 GB | $2.29($2.29/hr) | $2.99($2.99/hr) | Rent |
NVIDIA H100 SXM5 (80GB) Hopper•NVLink-4 (900 GB/s) | CoreWeave | 80 GB | $2.35($2.35/hr) | $3.15($3.15/hr) | Rent |
NVIDIA H100 SXM5 (80GB)Popular Hopper•NVLink-4 (900 GB/s) | RunPod | 80 GB | $2.49($2.49/hr) | $3.29($3.29/hr) | Rent |
4x NVIDIA RTX 5090 Blackwell•PCIe 5.0 | RunPod | 128 GB(4x 32GB) | $2.76($2.76/hr) | $3.96($3.96/hr) | Rent |
NVIDIA H200 SXM5 (141GB)Popular Hopper HBM3e•NVLink-4 (900 GB/s) | Lambda Labs | 141 GB | $3.49($3.49/hr) | $4.29($4.29/hr) | Rent |
8x NVIDIA A100 SXM4 (80GB) Ampere•NVLink-3 (600 GB/s) | Lambda Labs | 640 GB(8x 80GB) | $9.90($9.90/hr) | $13.52($13.52/hr) | Rent |
8x NVIDIA A100 SXM4 (80GB) Ampere•NVLink-3 (600 GB/s) | AWS (EC2 p4de.24xlarge) | 640 GB(8x 80GB) | $14.50($14.50/hr) | $40.97($40.97/hr) | Rent |
8x NVIDIA H100 SXM5 (80GB)Popular Hopper•NVLink-4 (900 GB/s) + Quantum-2 IB | Lambda Labs | 640 GB(8x 80GB) | $18.30($18.30/hr) | $23.92($23.92/hr) | Rent |
8x NVIDIA H100 SXM5 (80GB) Hopper•NVLink-4 (900 GB/s) + 3.2Tbps InfiniBand | RunPod | 640 GB(8x 80GB) | $19.80($19.80/hr) | $26.32($26.32/hr) | Rent |
8x NVIDIA H200 SXM5 (141GB) Hopper HBM3e•NVLink-4 (900 GB/s) + Quantum-2 IB | Lambda Labs | 1128 GB(8x 141GB) | $27.50($27.50/hr) | $34.32($34.32/hr) | Rent |
8x NVIDIA H100 SXM5 (80GB) Hopper•NVLink-4 (900 GB/s) + GPUDirect-TCPX | GCP (a3-highgpu-8g) | 640 GB(8x 80GB) | $32.00($32.00/hr) | $87.05($87.05/hr) | Rent |
8x NVIDIA H100 SXM5 (80GB) Hopper•NVLink-4 (900 GB/s) + 3.2Tbps EFA | AWS (EC2 p5.48xlarge) | 640 GB(8x 80GB) | $38.50($38.50/hr) | $98.32($98.32/hr) | Rent |
8x NVIDIA Blackwell B200 (192GB)Popular Blackwell•NVLink-5 (1.8 TB/s) + Quantum-X800 IB | Nebius / CoreWeave | 1536 GB(8x 192GB) | $44.00($44.00/hr) | $58.00($58.00/hr) | Rent |
Showing all 33 nodes • Scroll table vertically to view full hardware catalog
Prices updated February 2026Technical Knowledge Hub
Frequently Asked Questions & Transformer Math
Deep-dive technical answers on KV-cache calculation, CUDA Out-Of-Memory prevention, QLoRA fine-tuning benchmarks, and cloud GPU cost optimization.
Stable Diffusion XL 1.0 (3.5B) Architectural Specs & Memory Scaling
Detailed breakdown of transformer parameters, attention mechanisms, and KV-cache expansion.
Total Parameters3.5 Billion
Transformer Layers32 Layers
Attention Heads / GQA16 Q / 16 KV (1:1)
Max Native Context1,024 Tokens
Quantization Precision vs VRAM Footprint
| Precision / Quant Type | Bytes / Param | Model Weights VRAM | Compatible Single GPU |
|---|---|---|---|
| FP32 (32-bit Float) | 4 B | 13.04 GB | ✓ Fits on 1x RTX 4090 (24GB) |
| FP16 (16-bit Float) | 2 B | 6.52 GB | ✓ Fits on 1x RTX 4090 (24GB) |
| FP8 (8-bit Float) | 1 B | 3.26 GB | ✓ Fits on 1x RTX 4090 (24GB) |
| INT8 (8-bit Integer) | 1 B | 3.26 GB | ✓ Fits on 1x RTX 4090 (24GB) |
| INT4 / AWQ / GPTQ | 0.55 B | 1.79 GB | ✓ Fits on 1x RTX 4090 (24GB) |
| GGUF Q4_K_M | 0.58 B | 1.89 GB | ✓ Fits on 1x RTX 4090 (24GB) |
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