Is 1080p sharp enough on a 27-inch monitor?

It is usable but noticeably softer than 1440p at this size. Pixels are easier to see, especially in text. Competitive players often accept that trade-off for higher frame rates.

Is the refresh rate 144 Hz or 320 Hz?

The specs conflict, listing both. Check the exact model number on the listing before buying, since the two versions differ a lot in motion smoothness and price.

Does it work well with a console?

Yes. It has two HDMI ports, so a PS5 or Xbox can connect alongside a PC. Consoles cap output well below the highest refresh rate, so you won't use the full speed.

Does it have a DisplayPort or USB hub?

No. The listed connections are two HDMI ports and a headphone jack, with no DisplayPort or USB. Check your graphics card outputs before buying.

Is the curved screen a problem for work?

Mostly no. A gentle curve is fine for spreadsheets and browsing, though straight lines look slightly bowed. Designers who need perfect geometry may prefer a flat panel.