Whether you are looking to upgrade a few computers or your entire server infrastructure, Centon has the solution to maximize your hardware. Upgrading your systems is a cost effective way to increase your productivity. All Centon DDR2 solutions are backed by a lifetime warranty. Enables efficient and smooth execution of all your heavy-duty applications with maximum productivity 800 MHz of memory speed makes your computer great at multitasking 4 GB memory smoothly executes complex apps and games 240-pin-pin DDR2-800/PC2-6400 operates at up to 400 MHz data bus speed with minimal power consumption and as a result, you get optimal computer performance with an improved memory heat dissipation 2 x 2GB modules for dependable storage efficiency and maximum convenience 240-pin for faster, dependable performance and better access to data and information DIMM form factor with 240-pin and 4 GB memory size for enhanced performance and speed to allow maximum usability Unbuffered signal processing allows higher accuracy and enhanced ram module performance