The Dell 4GB memory module with 1600 MHz memory speed has DDR3 SDRAM memory technology for higher data transfer rate. This memory module supports non ECC data integrity checking. Featuring a 240-pin UBDIMM form factor, this dual-rank CL 11 CAS latency module helps you to boost up the performance of your system and ensures seamless operation. It is compatible with Alienware, OptiPlex, Vostro, Inspiron and Precision series..CAS latency: CL 11.Desktop RAM is suitable for use with Alienware, OptiPlex, Vostro, Inspiron and Precision series workstation.Data integrity check: Non ECC.Signal processing: Unbuffered.Capacity: 4GB.Memory technology: DDR3 SDRAM.Memory standard: DDR4-1600/PC3-12800.Memory speed: 1600 MHz.Form factor: UBDIMM 240-pin.4GB memory module has DDR3 SDRAM technology, 240 pin UBDIMM form factor and DDR4-1600/PC3-12800 standard and allows to release full potential when working with 3D imaging, multimedia and other memory intensive applications.