4GB DDR3 1333 MHz

HP VH638AA-RFB is a refurbished 4 GB memory module for PC or server upgrades and replacement. It provides a single DDR3 module with a rated speed of 1333 MHz, giving a straightforward way to add this memory specification to a compatible system.

The module uses a 240-pin DIMM form factor and is listed as non-ECC memory, with a stated voltage of 1.5 V. These details identify its physical format and memory type for systems designed for this specification.

It is supplied as one 4 GB refurbished module. The listing identifies its condition as refurbished, so this description refers to that condition rather than a new item.