I have finished my first GTX 1660 test from my
last video sample. I have tried lots of different settings and this is the best I could find (b-frame ref middle gave me a nice score boost).
Code:
Intel Demo Clip 1080p VMAF PSNR SSIM VQM speed bitrate
Quicksync H265
Iris Xe CQP best 91.76 41.85 0.9748 0.790 67 fps 2438 kbit
NVENC H265
GTX 1660S CQP best 90.62 41.28 0.9699 0.885 150 fps 2439 Kbit
x265 (Staxrip 2.1.9.0)
i7-1165G7 CRF slow 93.20 41.90 0.9754 0.800 8 fps 2430 kbit
i7-1165G7 CRF medium 91.05 41.35 0.9744 0.861 19 fps 2440 Kbit
i7-1165G7 CRF very fast 89.99 40.97 0.9726 0.894 32 fps 2440 Kbit
x264 (Staxrip 2.1.9.0)
i7-1165G7 CRF slow 89.38 40.21 0.9693 0.974 30 fps 2425 Kbit
https://drive.google.com/file/d/1Nzl...ew?usp=sharing
https://drive.google.com/file/d/1onL...ew?usp=sharing
Metric scores are a mixed bag, respectable VMAF and PSNR scores but not that good at VQM and especially SSIM metrics. Subjective frame to frame comparison it's obvious detail preservation is a lot worse compared to Iris Xe (VME/GPU) and x265.