I'm sorry mate to take that long but it was difficult to fined 4096 x 2160 resolution monitors found some like 32" 4K resolution monitor but the price is CRAZY $4000 and it's not in the manufactures official websites, So I gunna drop that for now.
GTX TITAN can give 2048 x 1536 real VGA resolution so you can use like ASUS PB Series PB278Q 27" with true resolution 2560x1440 (HDMI/DisplayPort/Dual-link DVI) and the GTX TITAN will resume the resolution to 2560x1440 in order to fit the picture in the monitor.
GTX TITAN can support 4 displays Multi Monitor.
Hope I did something helpful
Best Regards