Using the Linpack.c test, the i7-920 processor @ 3.5GHz is 85 times faster than the Raspberry, model B @ 700 MHz
KFLOPS : 3712985.699 (Intel) / 43297.209 (ARM)
Indeed, but the RPi offers you a silent practice of Linux , and this, is a revolution.
You may even ask yourself : did I forget to switch on this tiny computer !
Let’s ask the big guy help the little boy with Cross Compiling. In the Wiki, you will find how to set it up.