There are two basic types of transistors: bipolar junction transistors (BJT) and metal-oxide-semimconductor field effect transistors (MOSFET). The method of operation of BJTs and MOSFETs is quite different and both have existed for more than 40 years.
In general BJTs are faster but consume more power so are used in chips containing a few hundred to several thousand transistors. Check out the current draw per transistor - 1mA. If you had 10 million of these things in your Athlon, you would need a power supply capable of delivering 10kA! This IBM technology is a form of BJT technology so you won't be seeing it in your CPUs.
CPUs use MOS technology and it will be a while before a MOSFET clocks 210 GHz.
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There are two basic types of transistors: bipolar junction transistors (BJT) and metal-oxide-semimconductor field effect transistors (MOSFET). The method of operation of BJTs and MOSFETs is quite different and both have existed for more than 40 years.
In general BJTs are faster but consume more power so are used in chips containing a few hundred to several thousand transistors. Check out the current draw per transistor - 1mA. If you had 10 million of these things in your Athlon, you would need a power supply capable of delivering 10kA! This IBM technology is a form of BJT technology so you won't be seeing it in your CPUs.
CPUs use MOS technology and it will be a while before a MOSFET clocks 210 GHz.