G.Skill 32GB PC3-14900. Memory: 32768 MB, DDR3, 1866 MHz, PC/server, 4 x 8192 MB, 240-pin DIMM, PC3-14900, DIMM. Energy management: 1.5 V. Weight & dimensions: 40 mm. Other features: Rampage IV Extreme P9X79 DELUXE X79A-GD45 X79A-GD65 (8D) X79 Extreme 4 X79 Extreme 9 Pure black X79N