Written by Jakub Rusinowski · Last updated September 11, 2026
Yes, comfortably — you'll have ~7.2 GB of headroom running Granite 4.2 8B at Q4_K_M (4.83 GB, ~42 tok/s (est.)) with room for up to 32K context.
or compare on Vast.ai from $0.35/hr (typical low · varies)
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| VRAM | 12 GB |
| Memory Bandwidth | 456 GB/s |
| Quant | VRAM needed | Fits 12 GB? | Max context |
|---|---|---|---|
| F16 | 17.4 GB | ✗ No | — |
| Q8_0 | 9.9 GB | ✓ Yes | 16K |
| Q6_K | 7.9 GB | ✓ Yes | 32K |
| Q5_K_M | 7 GB | ✓ Yes | 32K |
| Q4_K_M | 6.2 GB | ✓ Yes | 32K |
| Q3_K_M | 4.8 GB | ✓ Yes | 32K |
| Q2_K | 4 GB | ✓ Yes | 32K |
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 4.2 8B | Q4_K_M · 4.83 GB · ~42 tok/s (est.) |
| Granite 4.2 3B | Q4_K_M · 1.81125 GB · ~82 tok/s (est.) |
At 2 hrs/day, buying (~$249) beats renting at $0.34/hr after about 12 months.
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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 ~7.2 GB of headroom running Granite 4.2 8B at Q4_K_M (4.83 GB, ~42 tok/s (est.)) with room for up to 32K context.
Granite 4.2 8B at Q4_K_M quantization (4.83 GB), estimated ~42 tokens/sec, up to 32K context.
| Size | VRAM | Verdict | Speed |
|---|---|---|---|
| Granite 4.2 30B | 18.1 GB | Does not fit | — |
| Granite 4.2 8B | 4.8 GB | Runs | ~42 tok/s |
| Granite 4.2 3B | 1.8 GB | Runs | ~82 tok/s |
← Can I Run It? | IBM Granite 4.2 Model Page | Intel Arc B580 GPU Page | Check Your Hardware