作者： Jakub Rusinowski · 最后更新： 2026年6月3日
Yes, comfortably — you'll have ~14 GB of headroom running Gemma 4 31B at Q4_K_M (18 GB, ~100 tok/s (est.)) with room for up to 4K context.
在亚马逊查看价格 — NVIDIA GeForce RTX 5090 32GB
| VRAM | 32 GB |
| Memory Bandwidth | 1792 GB/s |
| Quant | VRAM needed | Fits 32 GB? | Max context |
|---|---|---|---|
| F16 | 72.7 GB | ✗ No | — |
| Q8_0 | 43.7 GB | ✗ No | — |
| Q6_K | 36.1 GB | ✗ No | — |
| Q5_K_M | 32.7 GB | ✗ No | — |
| Q4_K_M | 29.4 GB | ✓ Yes | 4K |
| Q3_K_M | 23.9 GB | ✓ Yes | 4K |
| Q2_K | 20.9 GB | ✓ Yes | 8K |
VRAM needed assumes a 4K-token context with an f16 KV cache; “Max context” is the largest window that still fits in 32 GB. Figures are estimates from parameter count, quantization and memory bandwidth — the analyzer lets you tune KV-cache quant and context.
| Gemma 4 31B | Q4_K_M · 18 GB · ~100 tok/s (est.) |
| Gemma 4 26B-A4B | Q4_K_M · 16 GB · ~400 tok/s (est.) |
| Gemma 4 12B (Unified) | Q4_K_M · 10 GB · ~179 tok/s (est.) |
| Gemma 4 E4B | Q4 (QAT) · 5.5 GB · ~326 tok/s (est.) |
| Gemma 4 E2B | Q4 (QAT) · 5 GB · ~358 tok/s (est.) |
At 2 hrs/day, buying (~$1,999) beats renting at $0.34/hr after about 8.2 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 ~14 GB of headroom running Gemma 4 31B at Q4_K_M (18 GB, ~100 tok/s (est.)) with room for up to 4K context.
Gemma 4 31B at Q4_K_M quantization (18 GB), estimated ~100 tokens/sec, up to 4K context.
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