That will depend more on the motherboard and chipset used than the processor. Motherboards of that era would probably support between 256 and 768 MB of RAM, Most likely, the largest size modules you can use is 256 MB, so multiply that by the number of RAM slots and you'll have agood idea of how much your board supports.
There is no such thing as an "Intel Premium" processor, and the Intel Pentium is 16 years old.
None, other than that you can get a Pentium I computer for about $5.
Yes.
There is no such thing as a Pentium 5. That would be a type of processor, except that Intel stopped naming them Pentium before the Pentium 5 came out.
One might go to Intel's website to find information on an Intel Pentium Processor. There are several other websites one can go to that have information on an Intel Pentium Processor.
The Intel Pentium.
The first processor to contain L2 (external) cache was the Intel Pentium Pro.
yes
It is how good your processor is compared to the Intel Pentium.
I don't think they will try to run from you, so no concerns about their speed.
No, you cannot.
No. The newer processor will not use the same motherboard.