It can be a different processor, not only from a another family, but from a whole other manufacturer. Generally speaking
, you should look for the amount of cores that the CPU has and it's clockspeed (as you very well pointed out). Currently, the best and most expensive processors are from these families:
Intel - 'Core i' family, such as (in order from good to best) Intel Core i-3, Intel Core i-5 & Intel Core i-7.
AMD - 'Ryzen' family.
Overall, I would suggest looking for computers with an Intel Core i-5 processor. If you have less money, try looking for an Intel Core i-3 processors. If you have more money, try looking for an Intel Core i-7 processor. And if you are on a tigh budget, try looking for an Intel Pentium 4-core processor. BTW, CPUs of better families usually perform better than ones from lower families even if the ones from the lower families have more cores and a larger clockspeed.
I would also suggest, if money is not an issue, that after the processor, which is the most important part, as you said, you search for computers with 8GB of RAM. After that, look for one which has an SSD. The other parts are not as important as these 3. (BTW, yes, I think that the video card is the 4th most important part, sue me, lol!).Edit:
Ideally, try finding a PC with an Intel Core i-5 processor. 8GB of RAM. And 120-240GB of SSD. It could cost you between ~$500 and ~$1000 and can easily play pretty much every game there is.
Edited by Just_One_Question, 01 May 2017 - 08:18 AM.