作者： Jakub Rusinowski · 最后更新： 2026年7月12日
Yes, comfortably — you'll have ~3.4 GB of headroom running Qwen 2.5 7B Instruct at Q4_K_M (4.5885 GB, ~67 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 | 8 GB |
| Memory Bandwidth | 608 GB/s |
| Quant | VRAM needed | Fits 8 GB? | Max context |
|---|---|---|---|
| F16 | 16.2 GB | ✗ No | — |
| Q8_0 | 9.1 GB | ✗ No | — |
| Q6_K | 7.3 GB | ✓ Yes | 16K |
| Q5_K_M | 6.4 GB | ✓ Yes | 16K |
| Q4_K_M | 5.6 GB | ✓ Yes | 32K |
| Q3_K_M | 4.3 GB | ✓ Yes | 64K |
| Q2_K | 3.5 GB | ✓ Yes | 64K |
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.
| Qwen 2.5 7B Instruct | Q4_K_M · 4.5885 GB · ~67 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 ~3.4 GB of headroom running Qwen 2.5 7B Instruct at Q4_K_M (4.5885 GB, ~67 tok/s (est.)) with room for up to 32K context.
Qwen 2.5 7B Instruct at Q4_K_M quantization (4.5885 GB), estimated ~67 tokens/sec, up to 32K context.
| Size | VRAM | Verdict | Speed |
|---|---|---|---|
| Qwen 2.5 72B Instruct | 43.5 GB | Does not fit | — |
| Qwen 2.5 Coder 32B | 19.3 GB | Does not fit | — |
| Qwen 2.5 14B Instruct | 8.5 GB | Runs at Q2_K | — |
| Qwen 2.5 7B Instruct | 4.6 GB | Runs | ~67 tok/s |
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