CPU Release Dates
Intel CPU Releases
Family Name MHz Release Date
P1 90 and 100 MHz Pentium 100 03-07-1994
P1 120 MHz Pentium 120 03-27-1995
P1 133 MHz Pentium 133 06-12-1995
P1 150 and 166 MHz Pentium 166 01-04-1996
P1 200 MHz Pentium 200 06-10-1996
P2 233/266 and 300 MHz Pentium II 300 05-07-1997
P2 333 MHz Pentium II 333 01-26-1998
P2 350 and 400 MHz Pentium II 400 08-15-1998
P2 450 MHz Pentium II 450 08-24-1998
P3 450 and 500 MHz Pentium III 500 02-26-1999
P3 550 MHz Pentium III 550 05-17-1999
P3 600 MHz Pentium III 600 08-02-1999
P3 600E/650E/700E/533EB/667EB and 733EB 733 10-25-1999
P3 750E/800E and 800EB MHz Pentium III 800 12-12-1999
P3 1000EB MHz Pentium III 1000 03-08-2000
P4 1.4 and 1.5 GHz PGA423 Pentium 4 1500 10-20-2000
P4 1.7 GHz PGA423 1700 04-23-2001
P4 1.6 and 1.8 GHz PGA423 1800 07-02-2001
P4 1.9 and 2.0 GHz PGA423 and µPGA478 2000 08-27-2001
P4 2.0 and 2.2 GHz µPGA478 0.13 µm 2200 01-07-2002
P4 2.4 GHz µPGA478 0.13 µm 2400 04-02-2002
P4 2.26 GHz µPGA478 0.13 µm @ 533MHz FSB 2260 05-06-2002
P4 2.4 GHz µPGA478 0.13 µm @ 533MHz FSB 2400 05-06-2002
P4 2.53 GHz µPGA478 0.13 µm @ 533MHz FSB 2530 05-06-2002
P4 2.8 GHz. µPGA478 0.13 µm @ 533MHz FSB 2800 08-26-2002

 
AMD CPU Releases
Family Actual Clock Speed MHz/Rating Release Date
K5 PR75 and PR90 K5 90 03-27-1996
K5 PR100/PR120 and PR133 K5 133 10-07-1996
K5 PR166 K5 166 01-13-1997
K6 166/200 and 233 MHz K6 233 04-02-1997
K6 233 and 266 MHz K6 266 01-06-1998
K6 300 MHz K6 300 04-07-1998
K6-2 266/300 and 333 MHz K6-2 333 05-28-1998
K6-2 350 MHz K6-2 350 08-27-1998
K6-2 366/380 and 400 MHz K6-2 400 10-16-1998
K6-III 400 and 450 MHz K6-III 450 02-22-1999
K6-2 475 MHz K6-2 475 04-05-1999
K7 500/550 and 600 MHz 0.25 µm Athlon 600 06-23-1999
K7 650 MHz 0.25 µm Athlon 650 08-09-1999
K7 700 MHz 0.25 µm Athlon 700 10-04-1999
K7 550/600/650/700 and 750 MHz 0.18 µm 750 11-29-1999
K7 800 MHz 0.18 µm Athlon 800 01-06-2000
K7 850 MHz 0.18 µm Athlon 850 02-11-2000
K7 900/950 and 1000 MHz 0.18 µm Athlon 1000 03-06-2000
K7 1100 MHz TB 1100 08-28-2000
K7 1200 MHz TB 1200 10-17-2000
K7 1300 and 1333B MHz TB 1333 03-22-2001
K7 1400 and 1400B MHz TB 1400 06-06-2001
K7 1467 MHz XP 1700+  
K7 1333/1400/1466 and 1533 MHz XP 1800+ 10-09-2001
K7 1600 MHz XP 1900+ 11-05-2001
K7 1667 MHz XP 2000+ 01-07-2002
K7 1733 MHz XP 2100+ 03-13-2002

K7

 1800 MHz XP 2200+ 06-10-2002
K7 2000 MHz XP 2400+ 08-21-2002
K7 2133 MHz XP 2600+ 08-21-2002


Chart courtesy of Ace's Hardware - http://www.aceshardware.com/