作者： Jakub Rusinowski · 最后更新： 2026年7月21日
Yes, comfortably — you'll have ~12 GB of headroom running Cosmos 3 Edge at BF16 (8 GB, ~83 tok/s (est.)).
or compare on Vast.ai from $0.35/hr (typical low · varies)
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| VRAM | 20 GB |
| Memory Bandwidth | 800 GB/s |
| Quant | VRAM needed | Fits 20 GB? | Max context |
|---|---|---|---|
| F16 | 9.3 GB | ✓ Yes | 16K |
| Q8_0 | 5.5 GB | ✓ Yes | 16K |
| Q6_K | 4.5 GB | ✓ Yes | 16K |
| Q5_K_M | 4.1 GB | ✓ Yes | 16K |
| Q4_K_M | 3.7 GB | ✓ Yes | 16K |
| Q3_K_M | 3 GB | ✓ Yes | 16K |
| Q2_K | 2.6 GB | ✓ Yes | 16K |
VRAM needed assumes a 4K-token context with an f16 KV cache; “Max context” is the largest window that still fits in 20 GB. Figures are estimates from parameter count, quantization and memory bandwidth — the analyzer lets you tune KV-cache quant and context.
| Cosmos 3 Edge | BF16 · 8 GB · ~83 tok/s (est.) |
At 2 hrs/day, buying (~$899) beats renting at $0.34/hr after about 3.7 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 ~12 GB of headroom running Cosmos 3 Edge at BF16 (8 GB, ~83 tok/s (est.)).
Cosmos 3 Edge at BF16 quantization (8 GB), estimated ~83 tokens/sec.
| Size | VRAM | Verdict | Speed |
|---|---|---|---|
| Cosmos 3 Super | 128.0 GB | Does not fit | — |
| Cosmos 3 Nano | 32.0 GB | Runs at Q6_K | — |
| Cosmos 3 Edge | 8.0 GB | Runs | ~83 tok/s |
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