Graphics Upgrade-Reasonable Upgrade

[Gamerdude87]

Hello Everyone!

I have a pretty standard question that gets asked a lot but, thought I'd try my luck here anyway.

Here is my set up

AMD 940 3.0ghz quad
4GB DRR2 1066 RAM
9800GX2
MSI AMD 790GX chipset mobo
24' 1920 x 1200 monitor

I enjoy playing my games on max with great framerates. My current card usually does the trick but, as I start playing newer titles I have to start scaling down or lower FPS.

I am thinking about the 5870 or 5830 CF or Nvidia camp 470.

I am open to other cards and configurations.

Which offers the best gain/value considering my setup and desired FPS/quality?

 

[Gamerdude87]

How comparable is the 5830 cf v 5870?

Is either a big jump from my 9800GX2?

 

[Gamerdude87]

Actually looks like the 5850 CF looks like a viable option for my budget.

I assume that would be superior to the 5870?