Written by Jakub Rusinowski · Last updated July 12, 2026
Yes, comfortably — you'll have ~7.3 GB of headroom running BitNet b1.58 3B at 1.58-bit (0.6557 GB, ~196 tok/s (est.)).
| VRAM | 8 GB |
| Memory Bandwidth | 448 GB/s |
| Quant | VRAM needed | Fits 8 GB? | Max context |
|---|---|---|---|
| F16 | 7.9 GB | ✓ Yes | — |
| Q8_0 | 4.8 GB | ✓ Yes | — |
| Q6_K | 4 GB | ✓ Yes | — |
| Q5_K_M | 3.6 GB | ✓ Yes | — |
| Q4_K_M | 3.2 GB | ✓ Yes | — |
| Q3_K_M | 2.7 GB | ✓ Yes | — |
| Q2_K | 2.3 GB | ✓ Yes | — |
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.
| BitNet b1.58 3B | 1.58-bit · 0.6557 GB · ~196 tok/s (est.) |
At 2 hrs/day, buying (~$379) beats renting at $0.34/hr after about 19 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 ~7.3 GB of headroom running BitNet b1.58 3B at 1.58-bit (0.6557 GB, ~196 tok/s (est.)).
BitNet b1.58 3B at 1.58-bit quantization (0.6557 GB), estimated ~196 tokens/sec.
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