Complex sentence: Pentium 4 is a brand by Intel for an entire series of single-core CPUss for desktops, laptops and entry-level servers, were shipped from November 20,2000 until August 8,2008.
Split into simpler sentences: Pentium 4 is a brand by Intel for an entire series of single-core central processing units (CPUs) for desktops, laptops and entry-level servers. The Pentium 4-brand was introduced on November 20,2000 and shipped until August 8,2008.