Crucial 240-pin Dimms Are Used In Ddr3 Memory For Desktop Computers. Ddr3 Is The Latest Generation Of Memory With An Improved Architecture That Allows It To Transmit Data More Quickly. a Dual Inline Memory Module (dimm) Consists Of A Number Of Memory Components (usually Black) That Are Attached To A Printed Circuit Board (usually Green). The Gold Pins On The Bottom Of The Dimm Provide A Connection Between The Module And A Socket On A Larger Printed Circuit Board. The Pins On The Front And Back Of A Dimm Are Not Connected To Each Other.