FB DIMM (Fully Buffered DIMM) is a new generation server memory technology that is currently being standardized by JEDEC, the industry’s standard group.

     FB DIMM resolves DDR2 memory capacity issues and will enable two-way servers to reach 64GB of DDR2 memory in 2006.  These servers can provide 8, 12 or 16 FB DIMM socket configuration with main memory flexibility, can accommodate dual-rank FB DIMMs in all sockets. 

     There is a heatspreader helps to dissipate heat away from the memory modules.  Being, there is an Advanced Memory Buffer (AMB), is a controller or specialized processor, consume more power than older DDR2 Registered DIMMs.

     Users can mix up the single and dual-rank FB DIMMs in matching dual-channel sockets.  You can also mix 533MHz and 667MHz with lower speed.  For best performance and cost effectiveness, all FB DIMMs should be identically matched for speed.

DDR2 DIMM 240pins FB-DIMM