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.
HTC One X
The HTC One X for North America has been carried in Canada since and the United States since by Rogers and AT&T respectively. It is 0.4 mm longer than the international model, and features a 1.5 GHz dual-core Qualcomm Snapdragon S4 (MSM8960) SoC with an integrated on-die LTE (4G) modem instead of the Nvidia Tegra 3 which requires an external modem and is LTE-incompatible, and 16 GB of internal storage instead of 32 GB. Benchmarks have shown the battery life of the North American One X to be marginally better than the international model for various common tasks, except for web browsing where the North American model placed 15-30% better. This is primarily due to a smaller manufacturing process, 28 nm, of the Snapdragon S4 SoC compared to 40 nm for the Nvidia Tegra 3 inside the international HTC One X. AT&T cites incompatibility between Nvidia's Tegra 3 processor and LTE radios currently available on the market as the reason for the difference in processors.