That setup should work in most cases, but I do know that having a quad core really helps. In fact, that is recommended by Rockstar. Minimum is a dual-core CPU, but that means playing it at the lowest resolutions with minimum details.
Also, is this version cracked or legit? If it's cracked, we can't help you as that is illegal.
The PC version of GTA 4 is very, very poorly optimised. It was designed for consoles and ported to the PC, and pretty much everyone complains that it runs poorly even on high-spec PC's. See this extract from the Wikipedia article:
"Rockstar has come under fire from Grand Theft Auto communities, Gamespot and other websites, due to the game's abnormally high system requirements, as well as for its poor performance, even on systems that exceed the recommended system requirements by a wide margin."
Short of recoding the game from scratch, there's nothing you can do to fix it.
E 8500 Intel Core 2 Duo @ 3.16 Ghz
Inno 3d GTX 260 Overclock
Asrock Penryn 1600-110-Sli Motherboard
Vista 64 bit ultimate OS
2 Gig RAM
Samsung 22" LCD (1680 x 1050)
The game lags terribly, what might be the problem, I even have to change my resolution and image qualities to play the game.... and everybody knows that there's no fun in that!!!!!!
Huh?? I boggles me!!!!
Thanks for any help!
Dane (South Africa)
OK I know we have solved this thread with the excuse that the game is "poorly programmed" but I would just like to say that if you had another 2Gb of RAM (so you had 4Gb total) it would really help a lot.
They just released a new patch this week which allows you to determine what level of texturing you want to use. I noticed a pretty big increase in speed. You might try that.
More memory can help somewhat, but don't expect a huge leap. I had 4 gigs in my older system (Athlon64 X2 4200+) and I was lucky to get 20 fps. I upgraded to the Phenom II X3 720 BE and I was getting around 30 fps with my ATI HD 3870 card. I upgraded to an ATI HD 5750 and I was still getting 30 fps.
When I unlocked my 4th core, my FPS jumped to 40 fps. GTA was written to utilized multiple cores and the company has even stated 2 cores is not enough. It's the minimum, but they really suggest you have more than 2 cores to really be able to play the game. But, the big stink was, even high end systems were having problems.
This latest patch seems to clear up a lot of those issues. Oh, and it now gives you an option to NOT have to log into Rock Star Cafe to play the game! The login screen comes up and you can tell it to play offline. Of course, you won't be able to play multiplayer or upload/share and movies, but at least now it's only Windows Live that runs. Maybe that's why it runs better now? Who knows!