PC Perspective reviewed the Datacolor SpyderX Pro Colorimeter
A quote from the article:
A lot of love and attention is being given to the lights on motherboards, GPUs, memory and enclosures but what about the most important RGBs on your computer, your displays? When you shop for a monitor you research the capabilities, such as resolution, dynamic refresh rates and brightness and quite possibly even colour gamut but how can you know you are getting the best performance out of your display just with a few clicks in the OSD options panel?Datacolor SpyderX Pro Colorimeter Review
The tool you need to properly measure and tweak your display is a colourimeter, which measures ambient light as well as calibrating your monitor profile to match proper colour representation to the best of your monitors ability. For some developers and creative designers, knowing the exact CMYK or HTML value of a colour is enough to guarantee their design is perfect but for many of us, on both sides of the screen, we want to see the proper colours and not just know they should be right.