[sfer]

Shopping for a new desktop, I go to the Dell popup to see the differences between processors. I get this:

Intel® Pentium® Extreme Edition Dual Core Processor with HT Technology Cutting edge processing power for intense multi-threaded games and applications.
Intel® Pentium® D Processor with Dual Core Technology Accomplish more while running multiple applications, such as editing video while downloading music.
Intel® Pentium® 4 Processor with HT Technology Extreme Edition Advanced performance running multiple high-end games and/or demanding power applications at the same time.

Can someone differentiate these?