These two are good but it depends what you are using it for:
Radeon HD 6990:
Pros:
Good for movies & editing
Multi-Display Setup (2-3 Displays)
Cheaper
Cooler Temp
Cons:
Not Recommended for Extreme gaming
Loud Fan
GTX 590:
Pros:
For Extreme Gaming
Fast Paced Action (FPS Games)
3D
Cons:
More Heat
Expense
Single Display recommended (Up to 2 Displays)
The GeForce GTX 580 is either the best or the 2nd best graphics card
yes! They are really important in world of warcraft. no graphics card = no graphics in wow.
There are a wide variety of different places where one can purchase a GTX690 Graphics card. The best place to find the graphics card is at a local electronics store such as Best Buy.
In order to know what the best graphics card a certain PC can handle we need to know the type of PC you are asking about.
5870, 295 or 480
The World's Best Graphics game is the Crysis series.
The best performance: ASUS ROG ARES II Radeon HD 7990 The Best for Performance and price: GeForce GTX 680
A graphic card. Well, you can get those at your local electronics, like at Best Buy. :)
Buy a new graphics card and install it.
A good graphics card for low details on games is the nvidia 8800. I reccammend you don't get this just to be safe. To get normal to high graphics get the nvidia 9400. For high to best Graphics, get the nvidia 9800. For best Graphics, get the 260, 280, 285, 275, 290, (all nvidia).
There is no 4X AGP Graphics card that has 256MB but only 128MB that's called the Nvidia Geforce4 Ti4600
Nvidia make some of the best graphics cards around. The Nvidia 550 ti is a very good card from their range.