The DDR SO-DIMM modules are suitable for a wide selection of notebook and laptop computers. Ranging in capacity from 256MB to 1GB and in speed from 266MHz to 400MHz, the DDR SO-DIMMs are suitable for various tasks such as gaming, entertainment, and working. Manufactured by Adata, G.Skill, and Transcend the DDR SO-DIMM are available in PC2100 (266MHz), PC2700 (333MHz), PC3200 (400MHz). The CAS latencies for the DDR SO-DIMM are very low: CL2.5 or CL3 which makes them compatible with lots of notebook computers that use this kind of memory.