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DDR3 RAM is the latest generation of computer memory, with more bandwidth and lower power consumption than previous versions. It is also forward-compatible with DDR2 and DDR, meaning it can be used in place of either memory type in most computers. However, there are some important differences between DDR3 and its predecessors that users should be aware of. First, DDR3 operates at a higher voltage than DDR2, which can cause compatibility issues in some systems. In addition, DDR3 modules are not compatible with older motherboards that use DDR or DDR2 slots. As a result, users who want to upgrade to DDR3 will also have to buy a new motherboard. Despite these potential drawbacks, DDR3 is still the fastest and most efficient type of memory on the market today.