This lot includes 18 Samsung RAM memory modules, each with a total capacity of 1 GB. The modules come in the form factor of DIMM and feature DDR3 SDRAM technology, with a bus speed of PC2-6400 (DDR2-800). The model number is M378T2863RZS-CF7 and each module has a capacity of 1 GB. This RAM memory is compatible with various computer systems and is perfect for upgrading or adding memory to your computer. Use it for gaming, video editing, or any other memory-intensive tasks. With this lot of 18 modules, you can enhance the performance of your computer at an affordable price.