Informal release evaluation: BF16 / INT8 comparison

This community evaluation is provided for reference only and does not represent any official evaluation.

4 paired outputs on NVIDIA GeForce RTX 5090; 2048×2048, 8 steps, offload=model, CFG=1, KV cache enabled.

Warmup excluded. Pixel metrics measure drift, not semantic quality. The suite is small and does not establish a general quality ranking.

Case	Seed	BF16 s	INT8 s	BF16 peak GiB	INT8 peak GiB	RGB MAE (white)
portrait	42	45.85	33.40	26.89	26.89	0.0100
portrait	123	46.31	32.99	26.89	26.89	0.0169
edit_boat	20261009	87.84	52.01	26.93	26.93	0.0090
edit_boat	20261010	65.72	56.79	26.93	26.93	0.0071

Summary

Mean latency: BF16 61.43s; INT8 43.79s.

Interactive-sized side-by-side gallery. Raw data: comparison.csv, bf16/records.jsonl, int8/records.jsonl. Environment records include package versions and loading overhead.

Qualitative observations.

Interpretation limits

No CLIP, OCR, human preference, FID or benchmark leaderboard score is claimed.
Peak CUDA allocated/reserved memory excludes other processes and display usage.
Measured call latency includes transfers; disk writing and model loading are excluded.
Paired images may diverge with quantization even when both remain plausible.
Editing and transparency should be inspected in the gallery, including preserved details.