Hyperx impact 16gb 2x8gb memory kit 1866mhz ddr3l cl11 sodimm non ecc unbuffered 135v hyperx hx318ls11ibk216 is a kit of two 1g x 64 bit 8gb ddr3l 1866 cl11 sdram synchronous dram 2rx8 low voltage memory modules based on sixteen 512m x 8 bit ddr3 fbga components per module total kit capacity is 16gb each module kit has been tested to run at ddr3l 1866 at a low latency timing of 11 11 11 at 135v or 15v jedec standard 135v 128v 145v and 15v 1425v 1575v power supply vddq 13