ROG Ally X · Qwen3.8 27B · UD-Q4_K_M
Tight. Qwen3.8 27B at UD-Q4_K_M loads on ROG Ally X at 8,192 tokens and uses most of the fast memory, roughly 4–6 tokens per second.
| Piece | Value | Note |
|---|---|---|
| Weights | 15.3 GiB | Qwen3.8-27B-UD-Q4_K_M.gguf |
| KV cache | 0.65 GiB | 8,192 tokens |
| Engine overhead | 0.50 GiB | Flat 0.5 GiB allowance |
| 5% headroom | 0.82 GiB | On the sum above |
| Total | 17.3 GiB | Tight |
| Fast memory | 18.0 GiB | After OS reserve |
| Speed | 4–6 tok/s | Dense bandwidth range |
ROG Ally X · Qwen3.8 27B ·GGUF file · Methodology
FAQ
How was this fit calculated?
Weights 15.3 GiB, KV cache 0.65 GiB at 8,192 tokens, engine overhead 0.50 GiB, then 5% headroom, for 17.3 GiB. Fast memory available is 18.0 GiB.
What if I change the quant or the context?
This page is UD-Q4_K_M at 8,192 tokens. A smaller quant or a shorter context lowers the total. The homepage calculator changes both without a new page.
Can I trust the tokens per second?
The range 4–6 tok/s is a bandwidth roofline, 55% to 80% efficient. This dense model reads the whole weight file each token. Measure your own box before you buy around it.
Is ROG Ally X assumed to have extra RAM?
No separate RAM pool. The chip's unified memory is the whole budget, minus the OS reserve described on the methodology page.