Which 32bit OS should I use in my Pentium 4 PC with 1 GB of RAM? - Quora
Intel Pentium 4 processor families
Pentium 4 - Wikipedia
Intel Pentium 4 @ 2599.86 MHz - CPU-Z VALIDATOR
Pentium 4 - Wikipedia
Pentium and Pentium Pro Architectures
Pentium 4 - Wikipedia
Archlinux32 has 3 package repositories, based on your cpu instruction set. i486 is for the oldest cpus, i686 is for pentium mmx with see onwards, pentium 4 is for the latest 32-bit