why is xbox crap?
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CISC
Pronounced sisk, and stands for Complex Instruction Set Computer. Most PC's use CPU based on this architecture. For instance Intel and AMD CPU's are based on CISC architectures.
Typically CISC chips have a large amount of different and complex instructions. The philosophy behind it is that hardware is always faster than software, therefore one should make a powerful instructionset, which provides programmers with assembly instructions to do a lot with short programs.
In common CISC chips are relatively slow (compared to RISC chips) per instruction, but use little (less than RISC) instructions.
RISC
Pronounced risk, and stands for Reduced Instruction Set Computer. RISC chips evolved around the mid-1980 as a reaction at CISC chips. The philosophy behind it is that almost no one uses complex assembly language instructions as used by CISC, and people mostly use compilers which never use complex instructions. Apple for instance uses RISC chips.
Therefore fewer, simpler and faster instructions would be better, than the large, complex and slower CISC instructions. However, more instructions are needed to accomplish a task.
An other advantage of RISC is that - in theory - because of the more simple instructions, RISC chips require fewer transistors, which makes them easier to design and cheaper to produce.
Finally, it's easier to write powerful optimised compilers, since fewer instructions exist.
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in a nutshell.... RISC cpus put more emphasis on the software while CISC cpus but more emphasis on hardware....
now for PCs (computers), the CISC architechture (x86 platform) is the best since we can always upgrade the hardware and keep up with newer technologies and software...
but a console is a dummy box.. everything is proprietary and nothing can really be upgraded (kinda like a mac)... but the RISC architecture allows the software/games to be the scaler.... the hardware remains the same but newer software comes out and the hardware just scales to the software... that is why RISC is just SUPERIOR for apples and consoles... think back to the Playstation... the first generation playstation (psx) games looked like crap and were pretty simplistic... but evolved by leaps and bounds through newer software and programming without even upgrading the machine... with a computer, we get better performance from upgrading hardware (cpu, ram, video card, etc)...
now the PS2 and Gamecube are built on traditional RISC architectures... while the XBOX has a pc based x86 CISC chip.... also the fact that the XBOX cpu is only 32bit brings it down to the level of the PS2's 128bit processor (even thought it is more mhz, kinda like IPCs when comparing intel to amd). the thing is that the XBOX games look great.... but they will look about the same 2 years from now... and without any hardware upgrades that are available to a PC, the life of an XBOX will be greatly reduced.... The PS2 and gamecube games also look great.. but the thing is that their RISC architectures allow the machines to scale to software, so in 2 years from now, you will see MUCH improved gaming performance from these two consoles...