Can I Run Granite 4.1 30B on NVIDIA GeForce RTX 4070?
作者： Jakub Rusinowski · 最后更新： 2026年9月19日
No. Granite 4.1 30B needs 30.9 GB at FP8 (Q4 est. ~12-15GB, unconfirmed) and the NVIDIA GeForce RTX 4070 has only 12 GB. No quantization we publish closes a gap that size.
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The numbers
| Model | Granite 4.1 30B |
| Parameters | 30B |
| Quantization | FP8 (Q4 est. ~12-15GB, unconfirmed) |
| VRAM needed | 30.9 GB |
| NVIDIA GeForce RTX 4070 VRAM | 12 GB |
| Verdict | Does not fit |
Granite 4.1 30B on the NVIDIA GeForce RTX 4070: VRAM by quantization
| Quant | VRAM needed | Fits 12 GB? | Max context | Whole PC |
|---|---|---|---|---|
| F16 | 61.7 GB | ✗ No | — | — |
| Q8_0 | 33.6 GB | ✗ No | — | Build for this |
| Q6_K | 26.3 GB | ✗ No | — | — |
| Q5_K_M | 23 GB | ✗ No | — | Build for this |
| Q4_K_M | 19.8 GB | ✗ No | — | Build for this |
| Q3_K_M | 14.5 GB | ✗ No | — | — |
| Q2_K | 11.6 GB | ✓ Yes | 4K | — |
Assumes a 4K-token context with an f16 KV cache, on an estimated architecture — this model publishes no config we can read. A longer window needs more; a quantized KV cache needs less. “Max context” is the largest window that still fits in 12 GB. Figures are estimates from parameter count, quantization and memory bandwidth — the analyzer lets you tune KV-cache quant and context.
Context costs VRAM too. At FP8 (Q4 est. ~12-15GB, unconfirmed) on the NVIDIA GeForce RTX 4070: 8K 33.5 GB ✗ · 32K 38.9 GB ✗ · 128K 60.2 GB ✗. Past 8K it no longer fits 12 GB — a q8_0 KV cache buys roughly half of that back, which the calculator will price for you.
What to do next
Either step down to a smaller size in this family, or move to a Intel Arc Pro B70 (32 GB), the cheapest card we track with enough VRAM.
No compatible GPU? Granite 4.1 30B on 32 GB of system RAM, CPU only: runs comfortably.
Granite 4.1 30B needs ~31 GB but this GPU has 12 GB. Rent a A100 (40 GB)-class GPU by the hour instead of buying one:
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Cloud rates verified 2026-07 — estimates, and marketplace prices vary. Buying price is GPU MSRP only, not a full PC.
Other IBM Granite 4.1 sizes on the NVIDIA GeForce RTX 4070
- Granite 4.1 8B — runs (4.8 GB)
- Granite 4.1 3B — runs (1.8 GB)
Granite 4.1 30B on nearby hardware
- Intel Arc B570 (10 GB) — does not fit
- NVIDIA RTX 6000 Ada Generation (48 GB) — runs
All IBM Granite 4.1 sizes on the NVIDIA GeForce RTX 4070 | Granite 4.1 30B model page | NVIDIA GeForce RTX 4070 GPU page | Check your hardware