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.
Xserve
On January 8, 2008 Xserve was updated to use Intel Xeon ('Harpertown') processors faster memory, and a maximum storage capacity of 3 TB when used with three 1 TB drives. The front-mounted FireWire 400 port featured in previous models was also replaced with a USB 2.0 port. The Xserve RAID was discontinued on February 19, 2008.