Hi all! Short version - Burn the iso image - Boot your retro PC from the CD - Monitor to be connected via VGA - It will test resolutions (check for black bars on the left and right side) - It will test for 70 Hz support and smooth scrolling (check for smooth scrolling) As you know old DOS and Windows games mostly use the 4:3 aspect ratio. It's basically non-widescreen and many monitors still display it correctly with black bars on the sides like this one: Others do not preserve the 4:3 aspect ratio and stretch the image onto the entire screen like this one: Another issue is that MS-DOS games run at 70 Hz. Some monitors will internally convert this to 60 Hz which results in jumpy / non-smooth scrolling. Apparently IPS panels suffer from this. So I've created an ISO image that boots and runs a few tests. It's really easy, it will test one resolution at a time: 320 x 200 640 x 400 640 x 480 800 x 600 1024 x 768 1280 x 1024 1600 x 1200 Just press Escape to get to the next resolution: The images will show artefacts, but that's fine. The current resolution can be observed at the bottom right: After the 1600 x 1200 it will do a scrolling test of text file. This should be super smooth, as if you move a page of paper up: Just report back with the monitor make and model and what you observed. So far I've seen monitors doing the following: Some do everything 100% Some do the high resolutions correctly, but stretch 320 x 200 and 640 x 400 Others tested their IPS panels and reported scrolling issues. The iso image can be downloaded here: https://dl.dropboxusercontent.com/u/94628483/AR-TEST-V11.iso Of particular interest are: 1920 x 1200 16:10 panels. Especially IPS or other non-TN panels that can do 70 Hz properly. Because these monitors can do the 1600 x 1200 resolution pixel perfect, which is kinda the ultimate 4:3 resolution and most old games support it natively.