Autor: Jakub Rusinowski · Ostatnia aktualizacja: 12 lipca 2026
Yes, comfortably — you'll have ~4.8 GB of headroom running Gemma 3 12B Instruct at Q4_K_M (7.2 GB, ~57 tok/s (est.)) with room for up to 8K context.
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or compare on Vast.ai from $0.35/hr (typical low · varies)
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| VRAM | 12 GB |
| Memory Bandwidth | 672 GB/s |
| Quant | VRAM needed | Fits 12 GB? | Max context | Whole PC |
|---|---|---|---|---|
| F16 | 26.3 GB | ✗ No | — | — |
| Q8_0 | 15.1 GB | ✗ No | — | Build for this |
| Q6_K | 12.2 GB | ✗ No | — | — |
| Q5_K_M | 10.8 GB | ✓ Yes | 4K | Build for this |
| Q4_K_M | 9.6 GB | ✓ Yes | 8K | Build for this |
| Q3_K_M | 7.5 GB | ✓ Yes | 8K | — |
| Q2_K | 6.3 GB | ✓ Yes | 16K | — |
Assumes a 4K-token context with an f16 KV cache. 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 Q4_K_M on the NVIDIA GeForce RTX 5070: 8K 11.1 GB · 32K 20.4 GB ✗ · 128K 57.4 GB ✗. Past 32K it no longer fits 12 GB — a q8_0 KV cache buys roughly half of that back, which the calculator will price for you.
No compatible GPU? Gemma 3 12B Instruct on 16 GB of system RAM, CPU only: runs, but it is tight.
| Gemma 3 12B Instruct | Q4_K_M · 7.2 GB · ~57 tok/s (est.) |
| Gemma 3 4B Instruct | Q4_K_M · 2.4 GB · ~134 tok/s (est.) |
| Gemma 3 1B Instruct | Q4_K_M · 0.6 GB · ~261 tok/s (est.) |
At 2 hrs/day, buying (~$549) beats renting at $0.34/hr after about 2.2 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 ~4.8 GB of headroom running Gemma 3 12B Instruct at Q4_K_M (7.2 GB, ~57 tok/s (est.)) with room for up to 8K context.
Gemma 3 12B Instruct at Q4_K_M quantization (7.2 GB), estimated ~57 tokens/sec, up to 8K context.
| Size | VRAM | Verdict | Speed |
|---|---|---|---|
| Gemma 3 27B Instruct | 16.3 GB | Does not fit | — |
| Gemma 3 12B Instruct | 7.2 GB | Runs | ~57 tok/s |
| Gemma 3 4B Instruct | 2.4 GB | Runs | ~134 tok/s |
| Gemma 3 1B Instruct | 0.6 GB | Runs | ~261 tok/s |
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