The original Athlon, or Athlon Classic, was the first seventh-generation x86 processor and, in a first, retained the initial performance lead it had over Intel's competing processors for a significant period of time. AMD has continued the Athlon name with the Athlon 64, an eighth-generation processor featuring x86-64 (later renamed AMD64) technology.

Produced: From mid 1999 to 2005
Manufacturer: AMD
CPU Speeds: 500 MHz to 2.33 GHz
FSB Speeds: 100 MHz to 200 MHz
Process: (MOSFET channel length) 0.25 µm to 0.13 µm
Architecture: x86
Sockets:
Slot A
Socket A
 
Cores:
K7 (Argon)
K75 (Pluto/Orion)
Thunderbird
Palomino
Thoroughbred A/B
Barton
Thorton