Haswell: A Family of IA 22 nm Processors
Nasser A. Kurd, Muntaquim Chowdhury, Edward A. Burton, Thomas P. Thomas, Christopher Mozak, Brent Boswell, Praveen Mosalikanti, Mark Neidengard, Anant Deval, Ashish K. Khanna, Nasirul Chowdhury, Ravi Rajwar, Timothy M. Wilson, Rajesh Kumar · IEEE Journal of Solid-State Circuits · 2014
We describe the 4th Generation Intel® Core™ processor family (codenamed “Haswell”) implemented on Intel® 22 nm technology and intended to support form factors from desktops to fan-less Ultrabooks™. Performance enhancements include a 102 GB/sec L4 eDRAM cache, hardware support for transactional synchronization, and new FMA instructions that double FP operations per clock. Power improvements include Fully-Integrated Voltage Regulators ( ~ 50% battery life extension), new low-power states (95% standby power savings), optimized MCP I/O system (1.0-1.22 pJ/b), and improved DDR I/O circuits (40% active and 100x idle power savings). Other improvements include full-platform optimization via integrated display I/O interfaces.