I've just built a new system, but am having trouble choosing a graphics card. I have a high-res CRT (2048*1536) that I'd like to be able to use at full res. Also, I'd like this system to last at least 2-3 years and still play games well.
2gb AData 1066 DDR2
XFX 8400gs (Temp. until I get a better card)
430w Thermaltake True Power
looks like he already has a system in place and just needs the card. Out of those 2 and that res that you are running at I would def go with the 4870. A 4870x2 would suit you alot better at that res, but that is double $, so my vote is for the 4870. I am unsure, but a GTX260 may be better for you considering the res. I dont have time to look up high res benchies right now, but if no one else has commented on it by the time I get back I will take a look.
You're going to be choking your card at that resolution, you should look at the 1gig versions..... 4870/4850 for the extra video ram. And if you goto guru3d you might see a benchmark for a 2gig 4850......... think it said it was useless though........ you'll have to look.
And the video Card you should go for the hd4870 1GB if you prefer ati or maybe de 4870X2 not less because of the res you'll be playing, and nvidia its better on hig res with filter because of the ram bus (GTX 260 448bit and GTX 280 512bit)
So I suggets GTX 260 or HD4870 the 1Gb version. and if you have the money a 4870x2 plus de PSU (I dont Think so)
Well, your board has a single PCI-E slot so you can't crossfire. I'd say go with the 4870 1GB then. It will allow a greater range of games to play at that resolution. I also recommend getting the 1GB version as more RAM will help you out at those higher resolutions. Just don't expect to play Crysis on high at that resolution . One of the things I like about CRTs is that setting them at a resolution lower than their max is usually fine, unlike LCDs. Even though it can go higher I play most of my games on my 19" NEC CRT at 1280x1024, but Crysis I run at 1024x768 at medium and it looks just fine.