This Samsung DDR1 SDRAM module has a total capacity of 256MB, with a capacity per module also being 256MB. It has a bus speed of PC-2700 (DDR-333) and is designed in DIMM form factor. This memory module also features ECC Memory and is a perfect fit for upgrading your computer's RAM. This item is ideal for computer enthusiasts and professionals who require efficient RAM for their computer systems. With its high-speed performance and reliability, this Samsung DDR1 SDRAM module is a valuable addition to any computer system.