Good graphics card ( I only have on pcie slot )

Hks1218

Honorable
Dec 27, 2012
3
0
10,510
As the title says I am looking for a good graphics card that will last me a while playing at high resolutions and high settings. The games I will be playing are BF3, Metro 2033 and other high demanding games. Also I only have one pcie slot so I cannot sli/crossfire those cards so keep that in mind. Plus I want this card not to break my bank. My pc settings:

CPU: Intel i7 3770
GPU: Nvidia gt 620
RAM: 8GB Corsair Vengeance 8gb Kingston (Both 1600MHZ)
PSU:1000W


Thanks in advance,

Top Tier.
 

Hks1218

Honorable
Dec 27, 2012
3
0
10,510
By the way I have a 1080p 23 inch monitor, will those cards preform as well as you say with my monitor? Plus if my card can't handle games that well anymore I well have to shell out some more money for a new card because I only have one pcie slot.