I haven't tried multiplayer on GTA IV, but I don't get the big fuss honestly. No you can't run it on high, but it's like Crysis in that respect. They put graphics settings much higher than current hardware to future-proof the product. The consoles run it on low settings, at low resolution, so if you can pull off medium, it's far and away better than the console versions. This isn't to say there aren't optimization problems. There are, but it's not as bad as so many people say.
I have a c2d e8500, 4GB RAM, and 2x9600GT 512MB in SLI, and I can run it just fine on medium with respectible draw distance at 1920x1200 (~30fps most of the time). If I use the -availablevidmem 2.0 trick, I can get it up to high settings for a small framerate hit. (~24 or so, less than I'd like though.)
The mem trick effectively gives you more video memory by referencing some of your system memory as video. I recommend anyone with 2GB of ram use '-availablevidmem 1.5' and 2.0-3.0 if you have 4GB or more. (the number is the multiplier for your VRAM)
Just make a shortcut to LaunchGTAIV.exe, go to properties, and add the modifier with no quotes at the end of the Target field.
And remember GTA IV is scaled for the future. You are not meant to use max settings on current gen hardware.
I have a c2d e8500, 4GB RAM, and 2x9600GT 512MB in SLI, and I can run it just fine on medium with respectible draw distance at 1920x1200 (~30fps most of the time). If I use the -availablevidmem 2.0 trick, I can get it up to high settings for a small framerate hit. (~24 or so, less than I'd like though.)
The mem trick effectively gives you more video memory by referencing some of your system memory as video. I recommend anyone with 2GB of ram use '-availablevidmem 1.5' and 2.0-3.0 if you have 4GB or more. (the number is the multiplier for your VRAM)
Just make a shortcut to LaunchGTAIV.exe, go to properties, and add the modifier with no quotes at the end of the Target field.
And remember GTA IV is scaled for the future. You are not meant to use max settings on current gen hardware.