Intel's spring cleaning began early, with the company discontinuing twelve processor models spanning across the Core and Celeron lines, based on the 32 nm "Sandy Bridge" silicon. The company issued a PDN (product discontinuation notice) to that effect. A majority of these are mobile parts, whose market lifetime is stretched to keep up with OEM orders. Among the chips are the Core i7-2960XM, i7-2860QM, i5-2557M, i7-2637M, and Celeron B710, and 857. According to the PDN, Intel will stop accepting orders for the chips from July 11, 2013, and the last orders will have shipped out by January 14, 2014.