u/Adept-Newt5234

So ive built a gokd few PCs over the years but with the help from google. The question im basically asking is how do I know what CPU is good what GPU without using google

So if i was to primarily just look at the specs of each and then come to a conclusion of "oh these 2 work the best" - how would i know/what am i looking for?

Thanks in advance