Patriot Memory’s Signature Line DDR3 Non-ECC Unbuffered memory delivers the quality, reliability and performance expected for today’s computer needs. These 4GB modules are designed to run at PC3-10600 (1333MHz) at CAS 9 latency timings. Built using specific build-of-materials (BOMs) we ensure that every module meets and exceeds industry standards: offering you a hassle-free upgrade. We certify every component that goes into our modules, including the modules themselves, which must pass strict standards to ensure compatibility, quality and reliability. With free customer service and a lifetime warranty, Patriot Memory’s Signature memory modules are a perfect system upgrade option.PC3-10600 (1333MHz) dual D ata R ate240-Pin D ual in-line memor y mo duleNon-ECC U nbuffered1 R ank mo dule7.8US R efresh Interval (8192 CY CLES/64MS)1.5V Power R equirementAuto and self r efresh c apabilityPCB height: 1181(mil)Serial Presence-Detect (SPD)100% TestedRoHS CompliantCompatible with In tel® 6 S eries or la ter and AMD 9 S eries/FM S eries or later.