HBM2, or High Bandwidth Memory 2, is a type of computer memory designed to provide faster data transfer rates and improved performance compared to traditional memory types like DDR4. It achieves this by stacking memory chips vertically and connecting them with a wide interface, allowing for higher bandwidth and lower power consumption. This technology is commonly used in high-performance applications, such as graphics cards, supercomputers, and AI processors. By enabling quicker access to data, HBM2 helps enhance the overall efficiency and speed of computing tasks, making it ideal for demanding workloads in gaming, scientific research, and machine learning.