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.
MILPITAS, SUNNYVALE and SAN JOSE, Calif. - September 21, 2010: Open-Silicon, Inc., MIPS Technologies, Inc.(NASDAQ: MIPS), and Dolphin Technology today announced the successful tapeout of a ...