Mimimum requirements for a perfect emulation

You need to note a few things first:
- A lot of PS3 games are locked to 30fps
- A card like GTX 1060 will allow you to scale games to 4K while mantaining 1080p levels of performance

There is no desktop i7 8750, assuming you want to aim for the BEST performance, you should get an i7 8700K.
If it's a mini PC, you'll also need a good cooler.

you are right, the i78750 is for notebook.  The i78700K is for desktop.
Ok, so if i need "only" 1080p resolution, with best performance, can i buy a cheaper GPU than a GTX 1060? And how many GB of RAM i need?
thanks