Each memory through the various types of manual testing,make the product can used in different application environments,be able to provide users with both high-performance and high stability of the computer experience.Whether it is general user,gamers,or computer enthusiasts,can feel memory bring the performance improvement for computerHard disk/flash memory vendors are using decimal arithmetic:1MB=1000KB,1G=1000MB calculated,but the operating system is using binary arithmetic:1MB=1024KB,1GB=1024MB.Capacity:4GFrequency:1600MHzWorking voltage:1.5V,1333=CL9 1600=CL11Memory Channel:Dual ChannelNumber of pins:240PinaPlease note: Different batches, product appearance and color may be different, does not affect the useColour:greenMaterial:PCBSize:13.3 x 3cmPackage Contents:1 x 4GB DDR3 RAM2 x Cooling Vest(the appearance and color are random, don't accept the specified )2 x Sticker(the appearance and color are random, don't accept the specified )Only the above package content, other products are not included.Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.