Please help me choose GPU.

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Hi
I want buy new GPU...
Now i have 8600gts
In GTA 4 average fps is 30-35 on low settings...
My system is
CPU C2D e6600 @ 3,2ghz (400 x 8)
Ram 1x2gb G.Skill 800mhz @ CL4-3-3-9
And im finding better video card for GTA IV...
I Think buy HD4830 is this card (And my CPU and ram) enough for GTA IV?
I will play on 1680 x 1050 res.
I can't choose between hd 4830 and hd 4850 cards.
In my country 4830 coast 145$, but 4850 210$... Is this price worth performance?
Or maybe take 9800GT? (Coast 165$)
What u think, guys?


Thanks!

Sorry about my English

 

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Damn, i can't edit my first post...

Mabe go for r 9600gt 1gb version for 135$?

 

[coozie7]

Nice overclock on the E6600, I`m still using stock!
GTA IV is very demanding, even powerful quad-core systems struggle with it.
I`d say the HD4850 is the best choice.
What country are you in? I`m stuck in cold, wet, England.

 

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Yeah, E6600 overclocking great...I have too stock. I changed only my thermal grease and add extra fan's on case, and with stock cooler my temp. is ~50 on 100% stress...
Thanks for advice.
I'm in Latvia (Usually people don`t know it)... Wether here are cold and wet too