What are the differents between AMD and Pentium Processor?

And which one is better ?

What are the differents between AMD and Pentium Processor?

AMD is without doubt totally 100% compatible with Windows, that be an absurdly untrue and ill-informed statement made by the finishing guy. As for which is better, that tends to turn back and forth as respectively company puts out there most recent chips, right now Intel is influential with the Core 2 Duo, but AMD is going to release nearby new chips soon.
Thats extremely similar to the Mac/Windows debate. AMD tend to have slower clock speeds, but are more streamlined, while Intel (Pentium's manufacturer) tends to hold higher clock speeds but lower front side bus speeds.
With out getting too scientific. the chips use slightly different architecture (chip design). There are endless articles on the internet comparing the two leading players Intel and AMD. Basically windows is desgined around and runs 100% on Intel chips. AMD chips run cooler and somewhat faster andin tons cases are cheaper. Whoever the AMD chip is not 100% compatabile with plentiful of the drivers for various hardware components used surrounded by modern computers, but the number that don't is very small and getting smaller everyday.