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Concept
Haswell (microarchitecture)
Summary
Haswell is the codename for a processor microarchitecture developed by Intel as the "fourth-generation core" successor to the Ivy Bridge (which is a die shrink/tick of the Sandy Bridge microarchitecture). 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 "U" suffix.
Haswell CPUs are used in conjunction with the Intel 8 Series chipsets, Intel 9 Series chipsets, and Intel C220 series chipsets.
At least one Haswell-based processor was still being sold in 2022the Pentium G3420.
The Haswell architecture is specifically designed to optimize the power savings and performance benefits from the move to FinFET (non-planar, "3D") transistors on the improved 22 nm process node.
Haswell has been launched in three major forms:
Desktop version (LGA 1150 socket and the LGA 2011-v3 socket): Haswell-DT
Mobile/Laptop version (PGA socket): Haswell-MB
BGA version:
47 W and 57 W TDP classes: Haswell-H (for "All-in-one" systems, Mini-ITX form factor motherboards, and other small footprint formats)
13.5 W and 15 W TDP classes (MCP): Haswell-ULT (for Intel's UltraBook platform)
10 W TDP class (SoC): Haswell-ULX (for tablets and certain UltraBook-class implementations)
ULT = Ultra Low TDP; ULX = Ultra Low eXtreme TDP
Only certain quad-core variants and BGA R-series stock keeping units (SKUs) receive GT3e (Intel Iris Pro 5200) integrated graphics. All other models have GT3 (Intel HD 5000 or Intel Iris 5100), GT2 (Intel HD 4200, 4400, 4600, P4600 or P4700) or GT1 (Intel HD Graphics) integrated graphics. See also Intel HD and Iris Graphics for more details.
Due to the low power requirements of tablet and UltraBook platforms, Haswell-ULT and Haswell-ULX are only available in dual-core configurations. All other versions come as dual- or quad-core variants.
Official source
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