The 8GB ADATA XPG AX4U2666W4G16-BRZ DDR4-2666 DIMM Desktop RAM is a set of two 4GB modules designed for desktop computers. With DDR4 SDRAM technology and a bus speed of PC4-21300 (DDR4-2666), these modules provide fast and efficient memory access. They have a total capacity of 8GB, with a capacity of 8GB per module, making them ideal for multitasking and handling memory-intensive tasks smoothly. Additionally, the modules feature ECC memory, ensuring reliable data transfers and error correction for added peace of mind.