The old Anthlon processors were lightning fast, every gamer used them...the only problem was they got really hot so the gaming industry actually came out with "water" cooled heat sinks so they would last longer....
Internet connections have zero to do with what he is complaining about yet that's your idea of help?
You couldn't be more wrong! Basically put, the reason you use programs to shut down all the other programs running, update this, tweek that is to be able to process the data smoothly, the stutter happens when there is a interruption in the data processing, thus the jerking meter....why anyone uses another program(which is running) instead of doing it yourself with "msconfig" is purely because it is easier than learning something that will benefit them in the long run...
buying a new computer with all the latest technology isn't the answer...it won't be any better unless your internet speed and connection is optimized....any wireless = delays, it will work, just not as well as hardwired...if you need to have a pc with a superfast processor to play, fine, get a barebone tower with a decent graphic card, an I7 processor with 3gigs of ram, and load XP on it and it will work a "hair" better than the same setup with an old Pentium 4 because the key component to that setup is XP, not the processor(there is a reason 2gigs of ram is more than enough with XP and 4gigs of ram is bare minimum with W7 and W8)...and if you have a weak internet connection your still screwed.