You can run Homeworld Remastered Collection "beyond-4K" at 5120×2880
A look at Homeworld Remastered Collection in running "beyond-4K" at 5120×2880 resolution, has been posted on RPS.
A video posted shows the game at 5120×2880, but downscaled to 2560×1440 so it would record better.
RPS admits the video is a bit jumpy and has a low framerate due to using a PC with a single GPU, but you still cans see how gorgeous it looks.
If you head over to RPS, you will find a link to 4K shots of the game, which you can gawk at in all their glory.
Homeworld Remastered Collection releases on February 2 for $34.99 on Steam, with 15% knocked off when you pre-order.