PC2100 and PC2700 DDR memory for eMachines desktop computers is available at affordable prices at Memory America. These modules may be hard to find in retail stores as older modules such as the DDR memory modules for eMachines computers such as the C1641 have been replaced on store shelves by DDR3 240-pin DIMMs. If you have an older eMachines desktop that still works, there is no need to get rid of it simply because you have had a hard time finding new memory for the computer. All eMachines modules at Memory America are brand new and have been manufactured to meet or exceed OEM specifications. You can be assured that our eMachines desktop memory modules will be compatible with your system as all modules are pre-tested before they are made available to the public. All modules come with a lifetime warranty so if the module does not work on your system, you can return it for a replacement module.