The highest contrast ratio of the Acer XF270H is 100000000:1. That's over twenty times the contrast ratio of a 5000000:1 PC display, which is the most frequently found contrast ratio.
This PC screen's contrast ratio (100000000:1) is in fact the best contrast ratio across all LCD screens of this spec and age.
Across comparable types of PC screen the worst contrast ratio is Mega Contrast.
It may also be worth also looking at one of the other PC displays that have a 100000000:1 dynamic contrast ratio currently available including the MG279Q (£349.99), or the MG278Q (£399.64) both from Asus which has a better Rating.