The Asus VX239 has a maximum contrast ratio of 80000000:1. That's over four times the contrast ratio of a 20000000:1 PC monitor, which is the most frequently found contrast ratio. Across all PC monitors of a comparable age and type to the VX239 the contrast ratio ranges from Mega Contrast (worst) to 100000000:1 (best).
We compared this PC screen to all the other LCD screens that have an 80000000:1 dynamic contrast ratio and we think the Asus VS238 (£120.52) which is cheaper; or the Asus VX248 (£135.28) which has a better Rating are also worth considering.
If you are looking for a PC display with a higher contrast ratio then you might want to look at the Asus VN279 (£239.14) (100000000:1 and higher rated); or the Acer B243 (100000000:1 and cheaper), or the LG 23EA63 (£129.59) (100000000:1 and cheaper).