Best GPU that won't be bottle necked by Intel E5200?

An E 5200 can really get up there OC wise. And most games use only 2 cores anyways. So even an E 5200 would only be a bottleneck is CPU intense games. otherwise GPU would almost always be the bottleneck
 
The resolution of my Samsung SyncMaster 933BW is 1440x900. The power supply is not a problem as it is a 550W coolermaster which can even handle a GTX285. Thanks
 


Hey, hey, hey, hey, hey...

I was having a E6400 with a BFG 8800 GTX OC and I was able to play Crisis at High settings at 30 fps at 1280X1024 without any OC...

At least a 4850 OC or a 4870... a 4670... WTH?
 


So the 9800GT is the best one that a E5200 can handle? sad... BTW, is ati better than nVidia now? Why is ati the one everyone recommend to me?
 


Will these cards be bottlenecked by E5200 at stock speed? If so, how much?

In addition, is GTS250 exactly the same as 9800GTX+?

Thank you!