I'm looking to build a new PC that will be able to handle running multiple programs instantaneously. I would imagine that an Intel Pentium 4 w/HT would be a wise choice for this purpose. However, I'm trying to keep the spending budget in the $200-$400 range balancing price with performance. The cheapest P4 with HT I could find on Newegg was around $110, which is a little pricey. I was wondering if I should consider going with a diff intel chipset like celeron D, or should I go with an AMD athlon XP or sempron? Which would be the wisest choice for performance and price? I've had a celeron processor b4 on a Compaq PC i bought a looooong time ago, and frankly I've never been a fan of celeron D since. But maybe there has been changes in its performance. What do you guys recommend? I don't need to OC the CPU, I would just like it to be able to run multiple programs smoothly.