Would you suggest the 7950 or any high-end GPU with this rig?

[cool.dx.rip]

Hi guys,after having a lot of research I have found that 7850 1or 2,7950 this type of high end gpu will overkill for my demandsi don't want to waster my hard earned money but want performance and long run in other words futureproof(I know nothing is futureproof in tech more than 5-6 years.)
MY rigRO:i5 3470
MOBO:gigabyte b75d3v
Ram:8gb ddr3 1333
PSU:CM 550 watt
GPU:HELP ME.

About me:I am a casual and normal gamer.MY RES. 1366*something in 18.5 inch led monitor.I want to play games in normal settings(if possible to run game in high so why should I will miss it)

.I want to play games about 3-4 or 5 years smoothly without upgrading my system.MY fav games:Sleeping dogs,gta 5,air assault (will be),stronghold 3.mainly I play strategy and gta type games mainly.not others genres much.
MY QUES:
1)as on my demand I need more powerful PRO than powerful gpu.thats why I choose i5.Should I need more powerful PRO?
2)found on net that 7770 or same level card like it will fill up my demands easily,is it TRUE?if true or wrong tell me some name of cards
what about 6850?
3)where should I invest more?
What I want:Run game for 4-5 yrs. smoothly.don't greedy about gaming experience

correct me if I m wrong.
N:B:SORRY 4 BAD ENGLISH

MAY GOD BLESS YOU ALLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLl

 

[Evander]

What's your budget?

 

[Jad Chaar]

A 7950 is a good buy. Dont get 2 though, 1) 550W isnt enough power. 2) it is overkill for 768x1366.
You probably wont be able to future proof since a new DX will be released in the meantime, and this will require a new GPU to play the latest games.
Try to get a 7850 2GB cheap, AMD ended production of it today and it will probably be discounted.

 

[cool.dx.rip]

What's your budget?

340$

 

[Jad Chaar]

340$

The 7950 is your best bet. Take my suggestions above though, dont get 2, your PSU cant handle it.