Alrighty, Fokz, from a totally neutral point of view (Now neutral anyway)
There IS a speed difference between a 3.2gHZ intel and an AMD 3200+.
Until you get to the low down, and compare a 2.0 ghz Intel P4 to a 2800 running at 2.08, if you have the AMD in a system with plenty of ram, it will totally blast the 2.0 ghz Intel out of the water.
TO be perfectly honest, It doesn't require a super-new computer to run almost all games very well.
really all you need is a processor over 1.4ghz and atleast 512 mb of ram, and a video card equivilent or better than a GeForce FX5200 with atleast 128 MB of vid ram.
I have a 2800+ in my new system and it's effing genius. HOpe this helped!