Hmmm... Pentium 4 processors are really abismal for gaming unfortuanately. It should be able to run it at around 45 to 50 fps at MEDIUM settings, HOWEVER, this is what i'd do to squeeze out every last frame:
- Turn shadows COMPLETELY off. Shadows in COD4 are pretty much useless and un-noticable, plus it uses ALOT of your computers grunt. It is not an essential element like it is in games like Fear and DOOM3 and it doesnt make the game look any better (trust me i've run cod 4 on MAX with 4X AA and 16X AF)
- Turn texture settings to MEDIUM, the game should look nice even on this setting.
- Turn dynamic lighting COMPLETELY off. Dynamic lighing is a heavy feature for machines.
- Leave Anti Aliasing COMPLETELY off. This feature is a killer
- You can have Anisotrophic filtering on (it isn't all that taxing on hardware) but I wouldnt put it past 8X if I were you (I suggest 4X personally)
-Turn V-SYNC (Sync every frame) ON. This uses a little more grunt, but it greatly smooths the frame rate and eliminates chopiness. With the other features that I mentioned turned off it should have enough power left over to have this feature turned on anyway.
- WIth your current setup I would have the resolution set at 1280X1024 MAX. Probably maybe go 1024x768 to be safe, but I dunno, it could run fine on 1280x1024 see what happens
Hope that helps
