Description:8GB 1333MHz DDR3 Non-ECC CL9 DIMM (Kit of 2) HyperX Blu
Detailed Specifications:Standard 512M X 64 Non-ECC 1333MHz 240-pin Unbuffered DIMM (DDR3, 1.5V, CL9, FBGA, Gold)  (Datasheet)
Mfgr's System P/N's:N/A
Form Factor:Memory Module
Pieces/Unit:2 (Two 4GB modules, totaling 8GB)