Year
Transistor Count
Processor Model
1971
2,300
Intel 4004
1972
3,500
Intel 8008
1974
4,500
Intel 8080
1976
6,500
Intel 8085
1978
29,000
Intel 8086
1979
29,000
Intel 8088
1982
55,000
Intel 80186
1982
134,000
Intel 80286
1985
275,000
Intel 80386
1989
1,180,235
Intel 80486
1993
3,100,000
Pentium
1995
5,500,000
Pentium Pro
1997
7,500,000
Pentium II
1999
9,500,000
Pentium III
2000
42,000,000
Pentium 4
2008
47,000,000
Atom
2002
220,000,000
Itanium 2 McKinley
2006
291,000,000
Core 2 Duo
2003
410,000,000
Itanium 2 Madison 6M
2004
592,000,000
Itanium 2 with 9MB cache
2008
731,000,000
Core i7 (Quad)
2011
1,160,000,000
Quad-Core + GPU Core i7
2010
1,170,000,000
Six-Core Core i7 (Gulftown)
2012
1,400,000,000
Quad-Core + GPU Core i7
2006
1,700,000,000
Dual-Core Itanium 2
2008
1,900,000,000
Six-Core Xeon 7400
2010
2,000,000,000
Quad-Core Itanium Tukwila
2011
2,270,000,000
Six-Core Core i7/8 Core Xeon E5
2010
2,300,000,000
8-Core Xeon Nehalem-EX
2011
2,600,000,000
10-Core Xeon Westmere-EX
2012
3,100,000,000
8-Core Itanium Poulson
2012
5,000,000,000
62-Core Xeon Phi
In 2010, the processor model that was the first to have two billion transistors on its chip was known as the Quad-Core Itanium Tukwila.
Over the years, the growth in the count of transistors on a single chip appears reasonable. Although the growth appears to be surprising fast, it is safe to say that every new chip made has about double the amount of transistors as the previous one. I believe we can expect to have chips that have 100 billion transistors on them within the next five years. Within ten years, I expect we will be seeing chips with over a trillion transistors on them.
References
A History of Microprocessor Transistor Count. (2013, August 29). Retrieved March 22, 2014, from Wagnercg:
References: A History of Microprocessor Transistor Count. (2013, August 29). Retrieved March 22, 2014, from Wagnercg: http://www.wagnercg.com/Portals/0/FunStuff/AHistoryofMicroprocessorTransistorCount.pdf