page_title: Haswell (microarchitecture)
section_title: Desktop processors
hierarchical_section_title: Haswell (microarchitecture) / List of Haswell processors / Desktop processors
caption_attribution_description: English: Intel Haswell i7-4771 CPU, sitting atop its original packaging that contains an OEM fan-cooled heatsink
context_page_description: Haswell is the codename for a processor microarchitecture developed by Intel as the "fourth-generation core" successor to the Ivy Bridge. Intel officially announced CPUs based on this microarchitecture on June 4, 2013, at Computex Taipei 2013, while a working Haswell chip was demonstrated at the 2011 Intel Developer Forum. With Haswell, which uses a 22 nm process, Intel also introduced low-power processors designed for convertible or "hybrid" ultrabooks, designated by the "Y" suffix.
  Haswell CPUs are used in conjunction with the Intel 8 Series chipsets, Intel 9 Series chipsets, and Intel C220 series chipsets.
context_section_description: All models support: MMX, SSE, SSE2, SSE3, SSSE3, SSE4.1, SSE4.2, F16C, Enhanced Intel SpeedStep Technology (EIST), Intel 64, XD bit (an NX bit implementation), Intel VT-x, and Smart Cache.
  Core i3, i5 and i7 support AVX, AVX2, BMI1, BMI2, FMA3, and AES-NI.
  Core i3 and i7, as well as the Core i5-4570T and i5-4570TE, support Hyper-Threading (HT).
  Core i5 and i7 support Turbo Boost 2.0.
  Although it was initially supported on selected models, since August 2014 desktop variants no longer support TSX due to a bug that was discovered in its implementation; as a workaround, a microcode update disabled the TSX feature.
  SKUs below 45xx as well as R-series and K-series SKUs do not support Trusted Execution Technology or vPro.
  Intel VT-d, which is Intel's IOMMU, is supported on all i5 and i7 SKUs except the i5-4670K and i7-4770K.  Support for VT-d requires the chipset and motherboard to also support VT-d.
  Models i5-4690K and i7-4790K, codenamed Devil's Canyon, have a better internal thermal grease to help heat escape and an improved internal voltage regulator ("FIVR"), to help deliver cleaner power in situations like overclocking.
  Transistors: 1.4 billion
  Die size: 177 mm²
  Intel HD and Iris Graphics in following variants:
  R-series desktop processors feature Intel Iris Pro 5200 graphics (GT3e).
  All other currently known i3, i5 and i7 desktop processors include Intel HD 4600 graphics (GT2).
  The exceptions are processors 41xxx, which include HD 4400 graphics (GT2).
  Celeron and Pentium processors contain Intel HD Graphics (GT1).
  Pentium G3258, also known as the Pentium Anniversary Edition, has an unlocked multiplier. Its release marks 20 years of "Pentium" as a brand.
  The following table lists available desktop processors.
  ᵃ  Some of these configurations could be disabled by the chipset. For example, H-series chipsets disable all PCIe 3.0 lane configurations except 1×16.
  ᵇ  This feature also requires a chipset that supports VT-d like the Q87 chipset or the X99 chipset.
  ᶜ  This is called 20th Anniversary Edition and has an unlocked multiplier.
  SKU suffixes to denote:
  K –  unlocked (adjustable CPU multiplier up to 63x)
  The Pentium G3258 CPU is unlocked despite not having the K-suffix.
  S –  performance-optimized lifestyle (low power with 65 W TDP)
  T –  power-optimized lifestyle (ultra low power with 35–45 W TDP)
  R –  BGA packaging / High-performance GPU (currently Iris Pro 5200 (GT3e))
  X –  extreme edition (adjustable CPU ratio with no ratio limit)
caption: Intel Haswell i7-4771 CPU, sitting atop its original packaging that contains an OEM fan-cooled heatsink
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