Written by Jakub Rusinowski · Last updated July 12, 2026
Yes, comfortably — you'll have ~3.2 GB of headroom running Llama 3.1 8B Instruct at Q4_K_M (4.83 GB, ~47 tok/s (est.)) with room for up to 16K context.
or compare on Vast.ai from $0.35/hr (typical low · varies)
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| VRAM | 8 GB |
| Memory Bandwidth | 448 GB/s |
| Quant | VRAM needed | Fits 8 GB? | Max context |
|---|---|---|---|
| F16 | 17.3 GB | ✗ No | — |
| Q8_0 | 9.8 GB | ✗ No | — |
| Q6_K | 7.9 GB | ✓ Yes | 4K |
| Q5_K_M | 7 GB | ✓ Yes | 8K |
| Q4_K_M | 6.2 GB | ✓ Yes | 16K |
| Q3_K_M | 4.7 GB | ✓ Yes | 16K |
| 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 8 GB. Figures are estimates from parameter count, quantization and memory bandwidth — the analyzer lets you tune KV-cache quant and context.
| Llama 3.1 8B Instruct | Q4_K_M · 4.83 GB · ~47 tok/s (est.) |
At 2 hrs/day, buying (~$499) beats renting at $0.34/hr after about 2.0 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 ~3.2 GB of headroom running Llama 3.1 8B Instruct at Q4_K_M (4.83 GB, ~47 tok/s (est.)) with room for up to 16K context.
Llama 3.1 8B Instruct at Q4_K_M quantization (4.83 GB), estimated ~47 tokens/sec, up to 16K context.
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