Patriot 4GB 240-Pin DDR3 SDRAM DDR3 1600 (PC3 12800) Desktop Memory Model PSD34G160081 Cas Latency: 11 Voltage: 1.5V Buffered/Registered: Unbuffered Features: PC3-12800 (1600MHz) dual Data Rate 240-Pin Dual in-line memor y mo dule Non-ECC Unbuffered 1 Rank mo dule 7.8US Refresh Interval (8192 CY CLES/64MS) 1.5V Power Requirement Auto and self refresh capability PCB height: 1181(mil) Serial Presence-Detect (SPD) 100% Tested RoHS Compliant Compatible with Intel 6 Series or later and AMD 9 Series/FM Series or later