Haswell's predecessor, Ivy Bridge, has a maximum of 16 EUs.
driver is the last planned driver release on Windows 7/8.1. Hardware graphics support for Direct3D 11.1 and OpenGL 4.3.15 W or 11.5W TDP processors for the Ultrabook platform (multi-chip package like Westmere) leading to reduced heat, which results in thinner as well as lighter Ultrabooks, but the performance level is slightly lower than the 17 W version.37, 47, 57 W thermal design power (TDP) mobile processors.New advanced power-saving system due to Haswell's new low-power C6 and C7 sleep states, not all power supply units (PSUs) are suitable for computers with Haswell CPUs.Fully integrated voltage regulator (FIVR), thereby moving some of the components from motherboard onto the CPU.In August 2014 Intel announced that a bug exists in the TSX implementation on the current steppings of Haswell, Haswell-E, Haswell-EP and early Broadwell CPUs, which resulted in disabling the TSX feature on affected CPUs via a microcode update. Intel Transactional Synchronization Extensions (TSX) for the Haswell-EX variant.
Only certain quad-core variants and BGA R-series stock keeping units (SKUs) receive GT3e ( Intel Iris Pro 5200) integrated graphics.ULT = Ultra Low TDP ULX = Ultra Low eXtreme TDP.10 W TDP class (SoC): Haswell-ULX (for tablets and certain UltraBook-class implementations).13.5 W and 15 W TDP classes ( MCP): Haswell-ULT (for Intel's UltraBook platform).