Best PCI EXPRESS x1 graphics card?

[pc_425x]

Quite simply, what is the best PCI-EAST x1 graphics card I can get for gaming? My motherboard only supports PCI and PCI-EAST x1, and apparently doesn't support the Radeon 5xxx series. Also, the lower the power consumption, the better.

 

[Sunius]

Suppose it's this one:
http://www.newegg.com/Product/Product.aspx?Item=N82E16814161398

However, it isn't even a gaming card. The performance will be very poor an you'll barely be able to play new games at 1024x768 at low settings. It's time for a motherboard upgrade.

 

[kajabla]

^+1.

 

[Mahisse]

1234 please delete!