Manufacturer part number is a unique identifier of a part used in a particular industry. Its purpose is to simplify referencing to that part. A part number unambiguously defines a part within a single manufacturer.
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UNSPSC is the acronym for the United Nations Standard Products and Services Code, it is a coding system to classify both products and services for use in eCommerce.
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Computer memory refers to devices that are used to store data or programs on a temporary or permanent basis for use in an electronic digital computer. Volatile memory is computer memory that requires power to maintain the stored information. There are two main types of memory: volatile and non-volatile. Current volatile memory technology is usually either static RAM (SRAM) or dynamic RAM (DRAM).
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DDR3 SDRAM or double-data-rate three synchronous dynamic random access memory is a random access memory technology used for high speed storage of the working data of a computer or other digital electronic device. DDR3 is part of the SDRAM family of technologies and is one of the many DRAM (dynamic random access memory) implementations. DDR3 SDRAM is an improvement over its predecessor, DDR2 SDRAM. The primary benefit of DDR3 is the ability to run its I/O bus at four times the speed of the memory cells it contains, thus enabling faster bus speeds and higher peak throughput than earlier memory technologies. However, greater bus speed and throughput is achieved at the cost of higher latency. In addition, the DDR3 standard allows for chip capacities of 512 megabits to 8 gigabits, effectively enabling a maximum memory module size of 16 gigabytes.
More on “DDR3 SDRAM” at en.wikipedia.org