HyperX Computer Ram memory 4GB=2GB*2 DDR2 1066 [1] strong stock [2] 3 month warranty These ... are a set of 4GB (2 x 2GB) HyperX DDR2-1066 and they run great. I threw the package they ... in away, so I have them in an old package for protection. Description:4GB 1066MHz DDR2 Non-ECC CL5 DIMM (Kit of ... :Standard 256M X 64 Non-ECC 1066MHz 240-pin Unbuffered DIMM (DDR2, 2.3V, CL5, Gold) (Datasheet)Mfgr's System ...