Patriot Memory's Signature Line Non-ECC UnNeck Scarfered memory delivers the quality reliability and performance expected for today's computer needs. Built using a 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. FEATURES: PC3-12800 (1600MHz) Dual Data Rate 240-Pin Dual in-line memory module Non-ECC UnNeck Scarfered 2 Rank Double-sided module 7.8US Refresh Interval (8192 CYCLES/64MS) 1.5V Power Requirement Auto and self-refresh capability SPECIFICATIONS: Form Factor: 240-Pin Dual in-line memory module Capacity: 4GB (1x4GB) Frequency: 1600MHz (PC3-12800) Voltage: 1.5v Certifications/Safety: RoHS Dimensions: 13.4 x 2.9 x 0.4 cm Weight: 18g WHAT'S IN THE BOX: Patriot Signature Line 4GB 1600MHz DDR3 Single Rank Desktop Memory - Green x1