Patriot DDR3 4 GB (2 x 2GB) CL9 PC3-10600 (1333MHz) Desktop Memory Dual Channel Kit PSD34G1333K PC3-10600 (1333MHz) dual Data Rate 240-Pin Dual in-line memory module for Desktop PCs 4GB (2 x 2GB) Non-ECC Unbuffered kit 100% Tested and compliant with RoHS standards Lifetime Warranty