The highest contrast ratio of the Acer 220HQB is 100000000:1. That's over twenty times the contrast ratio of a 5000000:1 flatpanel monitor, which is the most common contrast ratio.
A 100000000:1 dynamic contrast ratio is in fact the best contrast ratio amongst all PC displays of a similar age and spec to the 220HQB.
A Mega Contrast dynamic contrast ratio is the worst contrast ratio across comparable types of PC display.
We compared this PC monitor to all the other PC displays that have a 100000000:1 dynamic contrast ratio and we think the K212HQL (£86.00), the G247HYL (£89.99), and the K242HL (£96.99) all from Acer which has a better Rating is also worth considering.