I think the processor is too harsh.
Here's the specs of my current PC:
Processor: Intel Core2Duo 3.2Ghz
Memory: 512MB failure
GFX: ATi Radeon 9550 256MB
I'm planning on playing at: 1152x864
It does run a game called Infernal which has almost the same graphics as GTA IV at high settings with no lag... Maybe will it run?
What?The C2D I put in there is way lower than 3.2GHz
, please look up the processor before saying it's too harsh...besides, even if you were going to use a 3.2GHz C2D it would be bottlenecked to fuck by that shitty graphics card and RAM.
512mb of RAM? Even San Andreas likes to have more than that.
A 9550? Hm, that barely runs Half-Life 2 and San Andreas on maximum settings, what makes you think it could play IV?
IV's graphics are good but not as good as Crysis', so I'd say if you can play Crysis on whatever settings then you should have no problem playing IV on the same settings. I can play Crysis with 2xAA, Very High across the board (DX10) at 1280x1024 so IV should be sexy.
The reason I chose the specs I did is easy...Steam supports Windows 2000, XP, and Vista, and since Rockstar is generous with their game support, they should too.
The processors I chose aren't the strongest of their breed but are powerful nonetheless and have multiple cores for compensation.
RAM...because of all those high-res textures, sounds, models, etc...everything going on at once, it's better to have more RAM to store them in because RAM is much faster and the more of it you have, the less your computer forgets something that needs to be loaded and has to retrieve it from the hard drive...which is already streaming everything else in real-time. Also Windows Vista undoubtedly uses more RAM than XP so if you have Vista you should have 2GB of RAM or more, end of story.
The graphics card is due to the fact that I had an ATi x1800GTO and could play BioShock on high at 1280x1024 at about 15fps, even with 2GB of RAM and a dual-core processor. Then when I got a 3870 I could do the same at over 60fps. This game isn't Source-based; yes, the processor is important but you NEED a current-generation graphics card...you'll probably even see better performance if you get an nVidia 9-series or ATi 4-series.
As for GTA IV and "Infernal", do please choose which has better graphics. (Bearing in mind IVs will be improved again to a yet unknown degree on the PC)GTA IVInfernal