The website Hubpages has setup a quite incredible test to compare performance of a old Mac plus from 1986 sporting 4MB of RAM, and a PC powered by an AMD Athlon 64x2 clocked at 2.4GHz and featuring 1GB of RAM. The test is based on the launch time for Word and Excel, as well as booting time. Of course such everyday test, does include all kind synthetic benchmarks usually CPU demanding. Results are quite surprising as the Mac plus is far from being ridiculous as it even scored the best result for some tests!
Of course, this test does not mean by any way that an 8MHz CPU is faster than a 65nm dual core processor clocked at 2.4GHz, but it illustrates perfectly how such a CPU power is lost in today's applications because most of today's software are not ultimately coded.
[translation by Linathael]