i must want the answer

Yes, you must want the answer, but does it matter how much you want it? Will the answer be better if you want it very much?

Did you start your project with the wrong processor? Then you did a bad design choice. Time to consider another processor, or rewrite your software to be more efficient.

Overclocking a processor intended to do 50MHz (I assume that was what you meant with your uhz - u [should actually be greek lowercase mu] is used for micro, i.e. 0.000001, while M is used for mega, i.e. 1000000) to do 75MHz would push it 50%. And for 200MHz it would push it 4 times. How would you trim a car designed for 100mph (160km/h) to do 4 times the normal speed - 400mph (640km/h)? Do you think that would work? Don't you think electronics have limitations just as the mechanical world has?

There are no fixed limit how much you can overclock a processor. It's just a question of probability that it gets damaged or starts to produce incorrect results. Or if you are lucky just locks up. Do you want a processor that works as expected? Or one that regularly locks up or gives wrong results? Or maybe even a chip that lets out the magic smoke? Which is faster - a chip that has locked up, or a chip that is run at factory-specified speed?

Yes, you must want the answer, but does it matter how much you want it? Will the answer be better if you want it very much?

Did you start your project with the wrong processor? Then you did a bad design choice. Time to consider another processor, or rewrite your software to be more efficient.

Overclocking a processor intended to do 50MHz (I assume that was what you meant with your uhz - u [should actually be greek lowercase mu] is used for micro, i.e. 0.000001, while M is used for mega, i.e. 1000000) to do 75MHz would push it 50%. And for 200MHz it would push it 4 times. How would you trim a car designed for 100mph (160km/h) to do 4 times the normal speed - 400mph (640km/h)? Do you think that would work? Don't you think electronics have limitations just as the mechanical world has?

There are no fixed limit how much you can overclock a processor. It's just a question of probability that it gets damaged or starts to produce incorrect results. Or if you are lucky just locks up. Do you want a processor that works as expected? Or one that regularly locks up or gives wrong results? Or maybe even a chip that lets out the magic smoke? Which is faster - a chip that has locked up, or a chip that is run at factory-specified speed?