Ofcourse 5670 will support 19x10 resolution but at what settings you are playing the games, does matter. I am using CRT monitor + HD4670 and i can play GTA 4 @ 1024x768 but the FPS will dip down to <10 fps. When i change the resolution to 800x600 it will go to a decent 20+ fps. Now you understand that my card can handle that resolution, but the playability is questionable. So anyday if medium/hardcore gamer, get a decent mid-range offering rather than entry level card.
Got the point.
you are right, for CRT its useless. but for my spec. the card seemz ok u knw.
i hv got i7 950, asus sabertooth x58, 4gb ddr3 ,a 22" benq lcd and hd5670..as u knw.
so games lyk far cry 2 and crysis 2 runs smoothly on my pc...!
fps comes around 40 to 60..i guess. no lagging..coz i hv played both the games with high resolution.
for that price..the card is great.