Buying a new video card
15 years ago
General
upgrading my PC, but I have trouble telling one video card from another. I currently have a Radeon HD 2600 XT. Anyone have any suggestions for upgrades?
FA+

i donno mutch about video cards so i just as clueless :<
I'm also gonna recommend you avoid Nvidia cards. I've had problems ranging from "minor graphical glitches" to "lol game froze again" with every one of those I've owned, but no problems so far with Radeon.
Did you overclock your card in any way?
$100 = GTS 250
$150 = 5770
$250 = 5830
$300 = 5850
$400 = 5870
Your pick. The GTS 250 works just fine for today's games. (Bad Company 2 is decent on it with highest settings up.)
Honestly the best video card I've used to date is the GTX 260, but nVIDIA messed up drivers causing the card to overheat for no reason and my card was damaged. All we had spare my computer could run was an HD 5770, supposedly the equivalent of the GTX 260. We had an 8800 Ultra somewhere, I would've preferred that, but that card runs hot without driver issues and my setup has no video card cooling (Because it was setup for the HD5770 which doesn't need that.)
Now, switching from GTX 260 to HD5770 I can tell you these things. There are many games, ESPECIALLY source games, where the HD 5770 fails massively in comparison to the GTX 260. There is no game where the HD 5770 runs better than the GTX 260. Further to this, HD5770 only has 8xAA unless you use Radeon's special AA filters, but those not only make text unreadable, but cause severe lag in every game.
If you want a DirectX 11 video card, I would get the GTX 470, or wait for a lower end 400 series card that costs less. If a DX10 card, then GTX 260. ATI control panel is not only more complicated than nVIDIA's, but it has less options, and the GeForce cards have better AA and run better. Another nice thing about the new 400 series GeForce cards is 32xAA. 32xAA or 8xAA (Special Radeon AA filters aren't even worth mentioning, for the reasons I stated above), along with the GTX 470 being better than every single GPU radeon card on the market.
But now looking at it, GTX 260s have gotten considerably more expensive and GTS 250s considerably less effective. So maybe a GTS 250 would be a better choice, but there are some games even the GTX 260 won't get 60 FPS with everything at max, 16xAA and 16xAF, I imagine the GTS 250 would get even less.
This will last you for the next two and a half years at least. Just one handles Crysis on high everything.
One thing to watch out for on a new video card is that most of them now want dedicated power inputs from your PSU, do some research before finalising.