PROMPT A weathered fisherman repairing a fishing net on a harbor dock at golden hour, holding the net in both hands, a wooden sign reading "HARBOR 7" on the wall behind him, photorealistic, cinematic lighting
Fastest per image
Boogu Turbo
5.544 s/img · 10.82 img/min
Fastest per step
Z-Image Turbo
1.309 it/s raw throughput
Most VRAM-efficient
Krea 2 Turbo
18.75 GB mean peak of 24 GB
Real-world speed — seconds per image
What you actually wait for one 1024² image. Lower is better.
Boogu's 4-step count beats Z-Image's 8 despite being the larger model.
Raw throughput — it/s
Per-step engine speed (step count removed). Higher is better.
Images per minute
Derived sustained output rate.
Mean peak VRAM — headroom under the 24 GB ceiling
Average of each run's peak VRAM (red whiskers = run-to-run spread);
the dashed line is your 24 GB limit. Krea's fp8 + 4B-encoder footprint is leanest;
Z-Image's bf16 + full encoder runs closest to the ceiling despite being the smallest
model.
Per-run consistency
Total time across clean runs — flat lines mean no throttling/spill.