Need advices on video card upgrade

[andy_vu]

Hi everyone, I'm new here. I need to upgrade a new video card and i need your advices on that. I have a Dell XPS 8100 and this is my mainboad and cpu

http://img822.imageshack.us/img822/15/72919624.png

http://img43.imageshack.us/img43/2828/45438918.png

What is the best video card that i can put in my case. I mean the best card does'nt mean the most expensive one, but the strongest one that my mainboad and my cpu can handle. I really dont' want to buy a super strong card and then have performance bottleneck. I'm thinking about Nvidia Geforce GTX 560 but i'm not sure if my system can handle it. I really appreciate your advices.


Sorry for my bad English

 

[trying2]

Check the Amps available from your power supply. Also note if it has a 2nd power cable dedicated for a video card (will have 4 or 6 connectors in a square shape.) Also check for how long of a card space you have. Dells and other cheap PC sometimes use a Micro ATX mobo, so you wont have much room. FYI.

Next, spend as much as you can afford. A very strong card (gamer quality) will be $150 - $250.

 

[andy_vu]

Check the Amps available from your power supply. Also note if it has a 2nd power cable dedicated for a video card (will have 4 or 6 connectors in a square shape.) Also check for how long of a card space you have. Dells and other cheap PC sometimes use a Micro ATX mobo, so you wont have much room. FYI.

Next, spend as much as you can afford. A very strong card (gamer quality) will be $150 - $250.

I'm thinking about getting a new PSU too, because my current PSU is only 350W.
I have enough room for a new card in my case.