Improve overall performance of selected ThinkCentre of ThinkStation systems by upgrading with additional memory. PC3-10600 DDR3-1333 DDR3 UDIMM Non-ECC memory offers maximum data transfer rates up to 1333MB/sec to help you increased performance of memory intensive applications such as streaming video, graphics and CAD programs. Adding more system memory is one of the least expensive ways to help boost overall system performance and allows more multitasking which saves time and hassle. Compatible to ThinkCentre M90, M90p Small Form Factor (SFF), Tower, ThinkCentre A63 and ThinkStation E20. Features & Benefits: - Test-proven 100% compatibility listed for supported ThinkCentre and ThinkStation systems - Lenovo limited warranty - Lenovo memory installed in a new Lenovo system automatically assumes system warranty Note: This memory is also available in 25-pack by ordering option part number: 57Y4420