I'll tell you what I know, but I am kinda new to studying different CPU core and Motherboard Chipset. I'll develop this playing on history the best I can:
The origninal Pentium was built on the P5 architecture. The Pentium Pro was released in 1995, based on Intel's new P6 architecture. The P6 architecture was supposed to deliver superior performance, and the ability for Intel to ramp up the clock speeds. Pentium Pro did have superior 32 Bit performance, but its 16-bit performanced made Pentium Pro appear to be a joke. BTW, Pentium Pro was designed for servers or something like that. However, with the release of the Pentium II/LX Chipset, the potential of the P6 architecture proved to be shiny. In fact, the P6 architecture has been Intel's vessel for more than 6 yrs until last week, when the Northwood was released! This means that (Pentium Socket 7 PPro), Pentium II (Klamath core), Pentium 3 (Katmai Core), Pentium3 (Coppermine Core), Pentium 3 (Tulatan Core), and Pentium4 (Williamette Core) were all based upon the P6 architecture!
Back a while 2 1/2 years ago, AMD released the Slot A Athlon CPU, which crushed the the 1st core Pentium3 (Katmai) to peices. During this time, Intel had already began its work on Pentium4(Williamette), and even had 2 more sweet Pentium 3 cores under development. Intel racked their brains to rush CuMine, Tully, & Willy before AMD did too many of their own core updates. Coppermine was released & perfomed only 5% or 10% better than SLot A Athlons, but was enough for AMD to gripe about. I think by mid 2000, AMD released Athlon Thunderbird with its new (200MHz or 266MHz?) FSB. This put AMD finally back into the lead. In November 2000, P4 was released but Intel had such a downturn, I belieive the Pentium4 either looked like a joke, was recalled, or something horribly wrong. Darn, I really forget! (Is this right or is the Pentium3 1.13GHz that was recalled?) The reason for this is because Intel had to drop out alot of stuff while developing the Pentium4, like the 512KB Cache, and a whole load of other stuff. According to many, Northwood Is what what Intel meant for the Pentium4 to be originally. When was Tully injected in the battle? I do not know. In early Fall 2001, AMD released the ATHlon XP, as we all know. All Athlon XP's had a better Price/peformance compared to Intel's fastet P4 models CPUs; the Athlon XP 1500+ had an ABSOLUTELY AWESOME price/perfomance ratio for any of the Athlon SOcketA/Pentium4 bunch; and the Athlon XP 1800+, and later 1900+ were the top performers in most benchmarks.
A look into the future: Intel motherboards with 533MHz FSB should be available in a few months. AMD's .13 micron Thoroughbred should be released in a few months as well. And if Intel doesn't do something fast with (Itanium?), Hammer will rip apart Intel's fastest products for sure.
Who do I hope wins? Both AMD & Intel. Fans of both companies can get CPUs from their favorite manufacturer at lower prices ever than before. Just becuase I prefer AMD CPU's over Intel's Price/Performance ration, doesn't mean I am up in arms against Intel fans. Intel has their strong points as well, and if it wern't for both companies being matched competitors, Brand new CPUs would still cost around $800
My OS features preemptive multitasking, a fully interactive command line, & support for 640K of RAM!