NEW! 4GB (2x2GB) DDR2-667 Memory for Dell OptiPlex GX520 Could be Samsung, Kingston, Hynix, Smart, Corsair, Elpida, Micron, or Nanya Warranty: LIFETIME WARRANTY WorldWide Shipping to most countries & USA Capacity: 4gb (2x2gb) - You receive 2 Sticks of the 2gb LONG DIMMS for a total of 4gb