1) a reader shouldn't need to know what directx is to understand that the X-Box is a stripped down computer
2) Classifying generations by "n-bit" is tempting but demonstrably incorrect.
- chronologically this makes no sense. the dreamcast is 64 bit, yet comes after the jaguar, which came before the N64.
- does "n-bit console" mean CPU or graphics chip? traditionally, it means CPU, yet the turbografx/pc engine called itself 16 bit when the CPU was 8, and Neo Geo called itself 24 bit when they combined the 16 bit processor with the 8 bit sound chip. The CPU on the dreamcast is 64 bit, and people refer to it as a 128 bit console due to its graphics chip. The jaguar distributed "CPU" functionality between 7 distinct processor architectures for all tasks.
It would probably benefit from a chronology that marks where between consoles a generation was defined. But on the otehr hand, there is some dispute as to whether the dreamcast is a next-gen or not. While it doesn't quite stand up to the gamecube or PS2, it is certainly a massive step up from playstation and N64.
--Alan D