Haswell (microarchitecture)
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.
| General information | |
|---|---|
| Launched | June 4, 2013 |
| Marketed by | Intel |
| Designed by | Intel |
| Common manufacturer(s) |
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| CPUID code | 0306C3h |
| Product code |
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| Performance | |
| Max. CPU clock rate | 800 MHz to 4.4 GHz |
| QPI speeds | 9.6 GT/s |
| DMI speeds | 4 GT/s |
| Cache | |
| L1 cache | 64 KB per core (32 KB instructions + 32 KB data) |
| L2 cache | 256 KB per core |
| L3 cache | 2–45 MB (shared) |
| L4 cache | 128 MB of eDRAM (Iris Pro models only) |
| Architecture and classification | |
| Technology node | 22 nm (Tri-Gate) |
| Microarchitecture | Haswell |
| Instruction set | x86-16, x86-32, x86-64 |
| Extensions | |
| Physical specifications | |
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| GPU(s) |
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| Socket(s) |
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| Products, models, variants | |
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| History | |
| Predecessor(s) | Sandy Bridge (Tock) Ivy Bridge (Tick) |
| Successor(s) | Broadwell (Tick/Process) Skylake (Tock) |
| Support status | |
| Unsupported | |
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 2022 — the Pentium G3420. Windows 7 through Windows 10 were released for the Haswell microarchitecture.