This 4GB DDR3 RAM memory module is the ideal solution for those who want to enhance the performance of their desktop computer. Designed to offer stability and reliability, this memory allows you to speed up multitasking, reduce application loading times and improve overall responsiveness of the operating system. The memory counter operates at a frequency of 1066MHz (PC3-8500), representing the optimal standard for most motherboards that support DDR3 technology. As a DIMM memory, it is intended exclusively for use on fixed PCs (Desktop) and is not compatible with notebooks (which require SO-DIMM modules). Specifications Brand : Simpletek Capacity : 4GB Memory Type : DDR3 SDRAM Shape Factor : DIMM 240-pin (for Desktop) Speed : 1066 MHz (PC3-8500) Voltage : 1.5V Configuration : Unbuffered, Non-ECC Compatibility : Universal with Intel and AMD chipset that support the DDR3 1066M standard