The Crucial 4GB DDR3 RAM module is a tested and reliable choice for enhancing your computer's performance. With a total capacity of 20GB spread across 5 modules of 4GB each, this memory upgrade is perfect for boosting multitasking capabilities and overall system speed. The DDR3 SDRAM technology, along with a bus speed of PC3-12800 (DDR3-1600), ensures smooth and efficient data processing. Additionally, the Crucial brand is known for its lifetime warranty and high-quality components, making this RAM module a dependable choice for your computing needs.