Haswell (microarchitecture)

Haswell is the codename for a processor microarchitecture to be developed by Intel's Oregon team as the successor to the Sandy Bridge architecture. It will use a 22 nm process. Intel is expected to release CPUs based on this microarchitecture in 2013, approximately one year after the April 2012 release of Ivy Bridge, according to their Tick-Tock strategy. Intel showed a working Haswell chip at the 2011 Intel Developer Forum.

Technology

Features carried over from Ivy Bridge:

• A 22 nm manufacturing process.
• 3D tri-gate transistors (Ivy Bridge processors and onwards).
• A 14 stage pipeline (since the Core microarchitecture).

Haswell is confirmed to have:

• Advanced Vector Extensions 2 (AVX2) instruction set, also called Haswell New Instructions. (includes gather, bit manipulation, Floating Point Multiply Accumulate, and FMA3 support)
• Direct3D 11.1 and OpenGL 3.2 graphics unit.

Haswell is expected to have:

• A new cache design.
• Thunderbolt technology.
• Integrated GPU up to 20 EUs.
• New advanced power-saving system.
• Support for hardware-based transactional memory.
• 1MB L2 cache per core and up to a 32MB L3 cache.
• Up to 2~6 cores available in consumer market and 10 core in server version.
• New sockets - LGA 1150 for desktops and rPGA947 & BGA1364 for the mobile market.
• Fully integrated voltage regulator, thereby moving another component from the motherboard onto the CPU.
• 37, 47, 57W TDP mobile processors.
• 35, 45, 65, 95W TDP desktop processors.
• 15W TDP processors for the Ultrabook platform (multi-chip package like Westmere).

Broadwell

In keeping with Intel's tick-tock principle, the 14 nm shrink of Haswell is due out the year after the introduction of the microarchitecture and will be codenamed Broadwell.

It is said to become the chip maker’s first true system on a chip (SoC) design.

Successor

The Skylake microarchitecture will be the successor to the Haswell and Broadwell architectures.

Intel CPU core roadmaps from NetBurst and P6 to Skylake