Family 15h: Difference between revisions

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{{Infobox
  |title = Family 15h
  |label1 = Introduced
  |data1 = October 12, 2011
}}
'''Family 15h''' (also known as '''fam15h''', or ambiguously as '''fam15''') is a family of AMD microprocessors corresponding to the [[Bulldozer]], [[Piledriver]], [[Steamroller]], and [[Excavator]] microarchitectures.
'''Family 15h''' (also known as '''fam15h''', or ambiguously as '''fam15''') is a family of AMD microprocessors corresponding to the [[Bulldozer]], [[Piledriver]], [[Steamroller]], and [[Excavator]] microarchitectures.


Like other AMD family names, 15h ("15 hexadecimal") is a mostly-arbitrary, somewhat-sequential (new processor families receive unused higher family numbers) number, returned by the x86 <code>CPUID</code> instruction as a "Family number", and commonly written in hexadecimal. 15 in hexadecimal corresponds to the number 21 in decimal, meaning that while "Family 21" would also be a valid, if confusing, name for these CPUs, "Family 15" might in fact refer to fam0Fh (K8 CPUs, first released in 2003).
Like other AMD family names, 15h ("15 hexadecimal") is a mostly-arbitrary, somewhat-sequential (new processor families receive unused higher family numbers) number, returned by the x86 <code>CPUID</code> instruction as a "Family number", and commonly written in hexadecimal. 15 in hexadecimal corresponds to the number 21 in decimal, meaning that while "Family 21" would also be a valid, if confusing, name for these CPUs, "Family 15" might in fact refer to fam0Fh (K8 CPUs, first released in 2003).

Revision as of 08:05, 26 August 2024

Family 15h
IntroducedOctober 12, 2011

Family 15h (also known as fam15h, or ambiguously as fam15) is a family of AMD microprocessors corresponding to the Bulldozer, Piledriver, Steamroller, and Excavator microarchitectures.

Like other AMD family names, 15h ("15 hexadecimal") is a mostly-arbitrary, somewhat-sequential (new processor families receive unused higher family numbers) number, returned by the x86 CPUID instruction as a "Family number", and commonly written in hexadecimal. 15 in hexadecimal corresponds to the number 21 in decimal, meaning that while "Family 21" would also be a valid, if confusing, name for these CPUs, "Family 15" might in fact refer to fam0Fh (K8 CPUs, first released in 2003).