Mitsubishi is launching  a new Full HD monitor, the RDT235WLM-S (BK). As part of the Diamondcrysta WIDE series, this 23-inch TN LED-backlight monitor provides 1920 x 1080 Full HD resolution, 1000:1 c... Mitsubishi RDT235WLM-S (BK) 23-Inch Full HD Monitor
I disagree on the time, it will take more than a couple of years for them to be affordable. To asnwer your question, for gaming you´ll need a beast of gpu to handle 4k.