DDR3 Desktop Memory Module 240 Pins DIMM 1.5V — 4GB & 8GB (1333 / 1600 / 1866MHz)

Available configurations: 1x4GB = 4GB total (one 4GB module), 2x4GB = 8GB total (two 4GB modules), 1x8GB = 8GB total (one 8GB module), 2x8GB = 16GB total (two 8GB modules). These are DDR3 desktop memory modules designed for 240 Pins DIMM slots and operate at 1.5V. Speed and PC3 ratings by module size: 4GB DDR3 — 1333MHz / PC3-10600, 1600MHz / PC3-12800, 1866MHz / PC3-14900; 8GB DDR3 — 1333MHz / PC3-10600, 1600MHz / PC3-12800, 1866MHz / PC3-14900.