Written by Jakub Rusinowski · Last updated July 12, 2026
Yes, comfortably — you'll have ~54.3 GB of headroom running Qwen 3.5 122B-A10B at Q4_K_M (73.6575 GB, ~50 tok/s (est.)) with room for up to 128K context.
or compare on Vast.ai from $0.77/hr (typical low · varies)
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| VRAM | 128 GB unified memory |
| Memory Bandwidth | 800 GB/s |
| Quant | VRAM needed | Fits 128 GB? | Max context |
|---|---|---|---|
| F16 | 246.2 GB | ✗ No | — |
| Q8_0 | 131.9 GB | ✗ No | — |
| Q6_K | 102.3 GB | ✓ Yes | 64K |
| Q5_K_M | 88.7 GB | ✓ Yes | 64K |
| Q4_K_M | 75.9 GB | ✓ Yes | 128K |
| Q3_K_M | 54.2 GB | ✓ Yes | 128K |
| Q2_K | 42.3 GB | ✓ Yes | 128K |
VRAM needed assumes a 4K-token context with an f16 KV cache; “Max context” is the largest window that still fits in 128 GB of unified memory. Figures are estimates from parameter count, quantization and memory bandwidth — the analyzer lets you tune KV-cache quant and context.
| Qwen 3.5 122B-A10B | Q4_K_M · 73.6575 GB · ~50 tok/s (est.) |
| Qwen 3.5 35B-A3B | Q4_K_M · 21.13125 GB · ~108 tok/s (est.) |
| Qwen 3.5 27B | Q4_K_M · 16.30125 GB · ~24 tok/s (est.) |
| Qwen 3.5 9B | Q4_K_M · 5.43375 GB · ~60 tok/s (est.) |
| Qwen 3.5 4B | Q4_K_M · 2.415 GB · ~105 tok/s (est.) |
| Qwen 3.5 2B | Q4_K_M · 1.2075 GB · ~152 tok/s (est.) |
| Qwen 3.5 0.8B | Q4_K_M · 0.48300000000000004 GB · ~212 tok/s (est.) |
At 2 hrs/day, buying (~$3,999) beats renting at $0.77/hr after about 7.2 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 ~54.3 GB of headroom running Qwen 3.5 122B-A10B at Q4_K_M (73.6575 GB, ~50 tok/s (est.)) with room for up to 128K context.
Qwen 3.5 122B-A10B at Q4_K_M quantization (73.6575 GB), estimated ~50 tokens/sec, up to 128K context.
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