All Pentium 4 chips are single core, while dual-core Pentium models such as Pentium D and Pentium Processor Extreme Editions omit the "4" designation. See Pentium. Available in both 32-bit and 64 ...
The first CPU to reach a clock speed of 4 GHz was the Pentium 4 570 released in November 2004 as part of Intel's NetBurst microarchitecture, but this milestone wasn't achieved out of the box.
Following is a brief history of PC CPUs, starting with the most current. Starting in 1994, AMD introduced its first Pentium-compatible CPU, the K5. It was followed by the K6 and then the Athlon ...