The AMD you have listed there would out-perform that Intel in everything that you throw at it.
When you compare AMD's and Intel's you can't really compare speeds, per say. AMD's are clocked lower but they do more cycles per clock (as in, it takes less raw power to do the same amount of work).
That AMD, the Athlon 64 3500+, would be equivilent to about a 3.5/3.6 GHz Pentium 4. I'd prefer the AMD, but you might not. It's entirely up to you.