What monitor is compatible with a Power Mac G5?

I have a Power Mac G5 (last version bought in 2006) and my graphic monitor (Lacie) died... 😟 I am trying to find a new or used monitor with high definition for photography. Color calibration is important. I have a Dual Core 2.3Ghz and a NVIDIA GF 6600. I would prefer something new but I'm not sure what is compatible with my computer. The other option is to buy a used monitor. Any suggestions?