Xeon
Introduced in May 2013, Xeon E3-12xx v3 is the first Xeon series based on the Haswell microarchitecture. It uses the new LGA 1150 socket, which was introduced with the desktop Core i5/i7 Haswell processors, incompatible with the LGA 1155 that was used in Xeon E3 and E3 v2. As before, the main difference between the desktop and server versions is added support for ECC memory in the Xeon-branded parts. The main benefit of the new microarchitecture is better power efficiency.
Power Architecture
2005 saw the specifications of the Cell processor, jointly developed by IBM, Sony and Toshiba over a four-year period. Its primary use is for Sony's PlayStation 3. Cell uses a single 64-bit Power Architecture core, and adds 8 independent SIMD cores called SPEs. IBM also revealed the Xenon processor, a tri-core 64-bit processor for use in Microsoft's Xbox 360. With the 32-bit PowerPC based Broadway processor that Nintendo would use for its Wii console, IBM had put Power Architecture processors in all three of the major seventh-generation game consoles.