That's what I thought first; but monitor should be plug and play. No drivers on Chimei website.
The manual of the CMV223D monitor says:
Video chips below support the resolution 1680x1050:
Geforce4 Ti4200 , Geforce PCX6200 ,
ATI Radeon 9600 , ATI RadeonRX300
Matrox P750 , Nvidia Geforce2 ...