This 1GB DDR memory module is a reliable and high-quality option for your computer. With a capacity of 1GB per module and a bus speed of PC2100 (DDR-266), it is perfect for those looking to upgrade their system's performance. This particular module also features ECC technology for added reliability and stability. The form factor is DIMM and the module is designed for use in desktop computers. This DDR1 memory is compatible with a variety of computer components and parts, making it a versatile option for any user. So, whether you're a gamer or a professional, this Samsung memory module is a great choice to boost your computer's performance.