These memory modules are made to exacting standards for your specific machine. Each RAM stick is made to the original specs specified by the manufacturer and are backed by our lifetime guarantee. Feel free to call us with any of your memory qestions, we are here to help. Or if you prefer, hit the 'Add to Cart' button and proceed to our memory checkout page. After you memory order is submitted, we'll have your RAM order packed up that same day if received by 3pm CST.