DeepSeek-v4-Fable GPU Requirements: VRAM & Cheapest GPU
DeepSeek-v4-Fable has about 149B parameters. See exactly how much GPU memory it needs at FP16, INT8, and INT4, and the cheapest GPU to run it, with live hourly pricing from 5+ data center partners.
- Parameters
- 149B
- Min VRAM (INT4)
- 81 GB
- Cheapest (INT4)
- $1.56/hr
- Deploy
- < 2 min
To run DeepSeek-v4-Fable for inference at FP16, you need roughly 325 GB of VRAM. The cheapest fit on Spheron AI is 8x RTX 6000 Ada 48GB at about $6.24/hr. Quantize to INT4 to run it on a smaller, cheaper GPU.
VRAM required
Estimated peak VRAM including weights, activations, and KV cache. Add 10% headroom for production traffic.
- 01$0.78/hr$6.24/hr8× RTX 6000 Ada 48GBCHEAPESTAda Lovelace · GDDR6 ECC
- 02$3.59/hr$7.18/hr2× MI300X 192GBAMD CDNA 3 · HBM3 · ROCm, check kernel support
- 03$0.96/hr$7.68/hr8× L40S 48GBAda Lovelace · GDDR6
- 04$2.35/hr$9.40/hr4× RTX PRO 6000 96GBBlackwell · GDDR7
- 05$1.43/hr$11.44/hr8× A100 80GBAmpere · HBM2e
Live pricing aggregated from 5+ data center partners. Per-minute billing, no commitments.
VRAM required to run DeepSeek-v4-Fable
Estimated peak VRAM at context length 4,096 and batch size 1, including weights, activations, and KV cache. Quantizing to INT8 (Q8) or INT4 (Q4) cuts memory roughly in half and in quarter.
| Precision | Inference | LoRA fine-tune | Full fine-tune |
|---|---|---|---|
| FP16 | 325 GB | 488 GB | 1301 GB |
| INT8 | 163 GB | 244 GB | 651 GB |
| INT4 | 81 GB | 122 GB | 325 GB |
Cheapest GPU to run DeepSeek-v4-Fable by precision
325GB
Full precision. Best quality, highest memory.
163GB
8-bit quantized. ~2x smaller, minimal quality loss.
81GB
4-bit quantized. ~4x smaller, runs on smaller GPUs.
Inference vs fine-tuning DeepSeek-v4-Fable
Inference only holds the model weights plus a KV cache, so it is the cheapest setup. LoRA fine-tuning adds a small adapter and roughly 50% more memory. Full fine-tuning holds gradients and optimizer state on top of the weights, which is about 4x the inference footprint, so it often needs multiple GPUs even when inference fits on one. For DeepSeek-v4-Fable, an on-demand RTX 6000 Ada 48GB instance covers inference and LoRA, while a full fine-tune needs several times that memory and often spans multiple GPUs. Check the live GPU pricing for current rates.
Deployment guideDeploy DeepSeek V4 step by stepHands-on production setup, GPU configs, and benchmarks for DeepSeek-v4-Fable.Read guideSimilar models
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DeepSeek-v4-Fable GPU questions
VRAM, GPU choice and cost questions for running DeepSeek-v4-Fable on cloud GPUs.
DeepSeek-v4-Fable has about 149B parameters. At FP16 it needs roughly 325 GB of VRAM for inference, including weights, activations, and KV cache. Quantized to INT4 that drops to around 81 GB. Leave about 10% headroom for production traffic.
For FP16 inference, the cheapest fit on Spheron AI is 8x RTX 6000 Ada 48GB at about $6.24/hr. If you quantize to INT4, 2x RTX 6000 Ada 48GB at about $1.56/hr runs it for less. Pricing is aggregated live from 5+ data center partners with per-minute billing.
LoRA fine-tuning adds roughly 50% on top of inference memory, so it usually fits the same class of GPU. Full fine-tuning holds gradients and optimizer state and needs about 4x the inference VRAM, which often means multiple GPUs for DeepSeek-v4-Fable. The VRAM matrix above shows the exact estimate for each setup.
We read the parameter count directly from the model's safetensors metadata on HuggingFace, then estimate peak VRAM from weights, activations, KV cache, and framework overhead at your chosen precision. The estimate lands within about 15% of real-world use for most transformer models.
Quantized to INT4, DeepSeek-v4-Fable needs about 81 GB of VRAM, so it is too large for a single 24 GB RTX 4090 and needs a bigger card or multiple GPUs. At FP16 it needs roughly 325 GB, which usually means a data center GPU. The precision picks above list the cheapest GPU that fits each setup.
No. Even quantized to INT4, DeepSeek-v4-Fable needs about 81 GB of VRAM, so it takes 2 x 80 GB GPUs at minimum, and 5 x 80 GB GPUs at FP16. The precision picks above show the cheapest GPU that fits each setup on Spheron AI.
DeepSeek-v4-Fable needs 5 x 80 GB GPUs at FP16 (about 325 GB of VRAM), 3 x 80 GB GPUs at INT8 (163 GB) and 2 x 80 GB GPUs at INT4 (81 GB). All of these fit inside a single 8-GPU node, so no multi-node setup is needed for inference. Smaller cards such as 48 GB or 24 GB GPUs need proportionally more of them.
DeepSeek-v4-Fable needs about 163 GB of VRAM at INT8, roughly half its FP16 footprint of 325 GB. The cheapest INT8 fit on Spheron AI is 4x RTX 6000 Ada 48GB at about $3.12/hr. INT8 is the usual middle ground: half the memory of FP16, with a smaller quality drop than 4-bit quantization.
Running DeepSeek-v4-Fable around the clock at FP16 costs about $4,555 a month on 8x RTX 6000 Ada 48GB (730 hours at $6.24/hr). Quantized to INT4 it costs about $1,139 a month on 2x RTX 6000 Ada 48GB (730 hours at $1.56/hr). Spheron AI bills per minute, so stopping the instance when it is idle cuts that figure directly.
DeepSeek-v4-Fable needs about 325 GB at FP16, 163 GB at INT8 and 81 GB at INT4. Use FP16 when output quality matters most or you plan to fine-tune, INT8 for most production inference, and INT4 when cost or GPU size is the constraint: the cheapest INT4 fit is 2x RTX 6000 Ada 48GB at about $1.56/hr.