what test can I do to quantify the difference in performance given by the 16Kb of L1 of the DX4 at 66Mhz compared to the DX2 which has only 8? i have the Philcomputerlab tests ... which one can I use of the test group?

Today I did some tests, I want to try to bring out the contacts of the 3 jumpers that regulate the bus frequency and the jumper that sets the multiplier of the cpu to 2x or 3x. I took it out of the case (but then I'll try to attach micro switches to a rear bracket). Trying the various combinations, in addition to the basic ones of 20/25/33/40/50 mhz, I also found 7.5mhz! which brings the 486 to a frequency of 15Mhz, equaling the 386DX40. Not bad this IBM 330 in flexibility on the frequency range for the 486.