Found an old desktop with dual core 64 bit Pentium D 2.4/3.4 GHz with 4GB ram, Sound Blaster Audigy 2 and ATI RV370. Tried BookwormPup 32 and 64 bit and surprisingly it performs very well if working on spreadsheets, documents and online browsing "light load" demanding website. But when you watch youtube videos, cpu fluctuates between 70% to 95% and the fan starts to get really loud. I also tried bionicpup 32 and 64 bits. The same exact behavior.
Have these CPUs pretty much reached their limits or are there OS and browsers out there that will let you enjoy watching youtube videos without making your ear bleed?