The CT51264BA1339 from Crucial is a 4GB DDR3 memory module engineered to improve the performance and responsiveness of your desktop computer. Featuring a 512Mx64 2Rx8 configuration, this module operates at a speed of 1333MHz (PC3-10600), offering a perfect balance between speed and latency for a variety of computing tasks. The module's 240-pin design ensures compatibility with a wide range of desktop systems. Built using 256Mx8 16C chips, it is designed for users who require a reliable memory upgrade to enhance their computer's multitasking capabilities and overall system performance. Crucial's reputation for quality and reliability is underlined by this module's robust performance and durability.