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.
Lexicon Branding
Intel hired Lexicon again in 1998 to name the Celeron and Xeon chips. The "San Jose Mercury News" described Lexicon's reasoning behind the former name: "Celer is Latin for swift. As in 'accelerate.' And 'on.' As in 'turned on.' Celeron is seven letters and three syllables, like Pentium. The 'Cel' of Celeron rhymes with 'tel' of Intel." Placek told the "San Francisco Chronicle" said that the "X" of "Xeon" evokes "the next generation", "eon" refers to the long period of time, and the novelty of the name as a whole reflects the product's novelty. It also was supposed to recall "Pentium's Greek roots".