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.

For an understanding of Intel CPU architecture, see Intel microarchitectures. For Pentium 4 and Celeron D in LGA775 chip package. Includes Ethernet and HD Audio. 915GL includes graphics and ...

Chip firms Intel and AMD have both launched new additions to their processor ranges. Intel has launched a desktop Pentium 4 at 2.8GHz, while AMD has introduced a 0.13-micron version of its Athlon ...