Question 1

Can the CPU-only (DDR5 tuned / 4-channel) run qwen3.8 27B?

Accepted Answer

qwen3.8 27B needs about 18.5GB working set (weights 16.5GB + KV cache 2GB at 4k context). The CPU-only (DDR5 tuned / 4-channel) offers ~30GB usable — verdict: full. 18.5 GB needed of 30 GB usable — headroom for context

Question 2

How fast is qwen3.8 27B on the CPU-only (DDR5 tuned / 4-channel)?

Accepted Answer

~4.9–7.6 tok/s on the CPU-only (DDR5 tuned / 4-channel). computed roofline: 179.2 GB/s × 0.45–0.70 efficiency window / 16.5GB (Q4_K_M) — bands, never points.

Question 3

What should I run qwen3.8 27B on instead?

Accepted Answer

Mac mini M4 (32GB) runs it fully ($999).

Can the CPU-only (DDR5 tuned / 4-channel) run qwen3.8 27B?

Run qwen3.8 27B on instead