This thread is dedicated especially to the rev.C of the Sophia video board - the DVI version.
Nir Dary, on his youtube channel, has recently published a video about the installation of this board:
The sub-board with the DVI socket you see on the video can be mounted instead of a modulator in the 600/800XL or the 65/130XE models - see attachment
Currently there is a two available output resolution - 1536x960 pixels for monitors with aspect ratio 16:10 and 1280x1024 pixels with aspect ratio 5:4. Other resolution, with aspect ratio 4:3 (1280x960) and 16:9 (1600x900) are also planned. Maybe also 1600x1000 and 1440x900 - both 16:10. In any case the scaling ratio is 4:1, so the playfield is different. For instance - the 1280x1024 resolution covers only normal width (40 characters/320 hi-res pixels) screen. Unfortunately, the resolution can't be switched. Can only be set in the core.