> but I am very interested to hear what disadvantages this configuration might
> have to me.
> is it simply an issue of threads-performance vs. RAM overhead? 
> 
> benny

I use 2 * number of CPUs after doing some benchmarking.

The disadvantage to your configuration is that if you have more than 1 
CPU.  You might find 1 * number of CPUs more to your liking...