Need to upgrade from my 9800GTX - $200 budget

[dmbaile2]

Ever since upgrading to a higher res monitor I have been experiencing lower frame rates on my flight simulator program.

I run dual monitors, a 27" (2560x1440), and a 24" (1920x1200)

I like to have the Sim running on the 27" high res screen and whatever else im doing on the other one. Ill usually have an internet browser open on the 24" screen so I can multitask.

Current Specs:
ASRock H77M LGA 155 Intel, 1-PCIE 3.0 Slot.
Intel Core i5-3570k
16GB DDR3 1600 RAM
9800GTX
PC Power and Cooling 750W PSU (Single 60A rail)

I'd like to spend as little as possible topping out at about $200 MAX. I'm not a big gamer but when my flight-Sim starts to slow down I gets cranky.

 

[2260121]

radeon 7850
http://www.newegg.com/Product/Product.aspx?Item=N82E16814161405

 

[dmbaile2]

Supposedly this 6950 overclocks to a 6970 for $179

http://www.amazon.com/Sapphire-DL-DVI-I-SL-DVI-D-PCI-Express-100312-3L/dp/B005X64QAG/ref=lh_ni_t

What do you guys think?

 

[bawchicawawa]

Supposedly this 6950 overclocks to a 6970 for $179

http://www.amazon.com/Sapphire-DL-DVI-I-SL-DVI-D-PCI-Express-100312-3L/dp/B005X64QAG/ref=lh_ni_t

What do you guys think?

http://www.newegg.com/Product/Product.aspx?Item=N82E16814161405&nm_mc=OTC-pr1c3grabb3r&cm_mmc=OTC-pr1c3grabb3r-_-Video+Cards-_-Hightech+Information+System+Ltd.-_-14161405

I just ordered one yesterday, best price/performance right now for 185$.

 

[dmbaile2]

According to Tom's Hardware Comparison app the 6950 beasts the 7850, is there something I am missing?