作者： Jakub Rusinowski · 最后更新： 2026年4月29日
Yes, comfortably — you'll have ~7 GB of headroom running Granite 4.1 8B at Q4_K_M (5 GB, ~101 tok/s (est.)) with room for up to 8K context.
在亚马逊查看价格 — NVIDIA GeForce RTX 4070 12GB
| VRAM | 12 GB |
| Memory Bandwidth | 504 GB/s |
| Quant | VRAM needed | Fits 12 GB? | Max context |
|---|---|---|---|
| F16 | 19.4 GB | ✗ No | — |
| Q8_0 | 11.9 GB | ✓ Yes | 4K |
| Q6_K | 9.9 GB | ✓ Yes | 4K |
| Q5_K_M | 9 GB | ✓ Yes | 8K |
| Q4_K_M | 8.2 GB | ✓ Yes | 8K |
| Q3_K_M | 6.8 GB | ✓ Yes | 8K |
| Q2_K | 6 GB | ✓ Yes | 8K |
VRAM needed assumes a 4K-token context with an f16 KV cache; “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.
| Granite 4.1 8B | Q4_K_M · 5 GB · ~101 tok/s (est.) |
| Granite 4.1 3B | Q4_K_M · 2 GB · ~252 tok/s (est.) |
At 2 hrs/day, buying (~$599) beats renting at $0.34/hr after about 2.4 years.
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Cloud rates verified 2026-07 — estimates, and marketplace prices vary. Buying price is GPU MSRP only, not a full PC.
Yes, comfortably — you'll have ~7 GB of headroom running Granite 4.1 8B at Q4_K_M (5 GB, ~101 tok/s (est.)) with room for up to 8K context.
Granite 4.1 8B at Q4_K_M quantization (5 GB), estimated ~101 tokens/sec, up to 8K context.
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