Inside Microsoft's Xbox 360
 

"Microsoft's first try at a gaming console amounted to essentially a very affordable PC. It used standard PC components, including a mobile Intel processor (a hybrid Pentium 3/Celeron), a desktop NVIDIA chipset, a Western Digital hard drive and relatively standard PC DVD-ROM. The original Xbox was such a PC in fact that there were quite a few users that wanted to mod it simply to have a cheap PC, not even for gaming - including ourselves. "

Another new article up over at AnandTech on the Xbox 360.