In 1983 my best friend paid over 2K for the Apple II that run at whip lashing speed of 1 mhz (not including monitor & floppy drive). He also paid about 2K for a 286 that ran at 8 mhz, and $800 for an Amiga A500 that ran at 7 mhz.
I paid over $1300 for an Amiga A1000 that ran at 7 mhz, and over 6K for a state of the art 486DX2 66 that ran at 33*2 mhz.
At today price the dual G5 2.7 ghz would cost $10,800,000 if the Apple II is use with your scale. And, many scientists didn?t even dream about machines that run at 1 ghz because of the prohibited cost let alone single CPU that run 4 ghz.
According to Toms Hardware the P4 3.8 ghz is 5542 times faster than the P-233mmx in Sandra MM Interger test.