These were used but are still in working condition. These Patriot 4GB Desktop RAM memory modules are a set of two DDR3 SDRAM DIMM with a total capacity of 8GB (4GB each). Bus speed = PC3-10600 (DDR3-1333) and 288 pins These RAM modules are manufactured in Taiwan by the brand Patriot. Ideal for upgrading or replacing existing memory modules in a computer system, these modules deliver reliable performance and capacity to enhance system functionality.