Best low profile card for gaming and digital art?

What kind of gaming? The best there is is probably something like ATI 4650 for ~50$.

Thanks for your suggestions so far. The gaming I would be doing would be WoW and Company of heroes. I also would play some other RTS's and things like that. Nothing too terribly taxing. Obsidian, does that videocard happen to be a low profile card?

but i think there is a 9600 low profile out an a 4670 low profile

You need a low profile or low profile ready graphic card. Since the power supply that comes with the SX2800-01 is only 220w you'd also need to replace it.

This power supply $50
SeaSonic SS-300TFX 300W
http://www.newegg.com/Product/Prod [...] 6817151070

check measurements here
http://www.seasonic.com/product/pc_tfx.jsp

The most powerful graphic card available as a low profile ready (you have to change the back plate yourself) is this 9800GT. Some problems are noise and heat.
http://www.newegg.com/Product/Prod [...] 6814187061

another good choice, better for noise and heat, but not as high performing is the 9600GT
http://www.newegg.com/Product/Prod [...] 6814162016

The Seasonic 300w can power either card, but you do need to use the included 2-molex to PCIe adapter so check the power supply picture to make sure it has enough connectors for you. With either card you're going to have to watch your temperatures and possibly add fans or replace fans to up your cooling. Either option (there's actually 3 9600GT you could buy) would cost under $200

*EDIT* the 9800GT doesn't come with an adapter, you have to buy one
http://www.newegg.com/Product/Prod [...] 6812189120

The Galaxy 9600 GT is the better of the two. True low profile, less heat and noise, lower power draw, and a better distributor. Makes up for the slightly low performance.

Zotac 9800gt should be low profile (theres even an overclocked version)