*AMD Athlon (1999 - Present)
In June of 2000, AMD released the Athlon Thunderbird. This chip came with an improved 0.18 micron design, on-die full speed L2 cache (new for Athlon), DDR RAM support, etc.
In May 2001, AMD released Athlon "Palomino", also dubbed the Athlon 4. While the Athlon had now been out for about 2 years, it was now being beaten by Intel's Pentium IV.
the Athlon XP 1600+ performs at 1.4 GHz, but the average computer user will think 1.6 GHz, which is what AMD wants. But, this is not to say that AMD is tricking anybody. In fact, the Athlon XP 1800+ can out-perform the Pentium IV at 2 GHz. In June of 2002, AMD announced the 0.13 micron Thoroughbred-based 2200+ processor.