DDR3 for Dummies – 2nd Edition “eBook” just released get your copy now!

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Need to understand the difference between an RDIMM or UDIMM, single-rank vs. dual rank memory, “x4” vs “x8”?   How about knowing which memory to choose or how to populate your server for optimal performance?  Memory terminology and population rules can be confusing, but they shouldn't be.   The latest “DDR3 for Dummies – 2nd HP Special Edition” demystifies many of the things you need to know and ensures you’re getting the right memory for your HP ProLiant server.  

Continuing on from the wildly successful DDR3 for Dummies series, the new edition introduces the population rules for the AMD 2- socket and 4-socket servers along with updated diagrams and speed tables.  The HP Memory capacity and speed tables now include the recent 16GB dual rank and 32GB quad rank memory which improve performance and increase the overall max memory capacity.    The latest edition includes all the new Intel 4-socket servers capable of running in “hemisphere mode” for maximum performance.  Finally, the “10 Common Questions” section covers many memory topics including “why buying HP memory” makes sense.

The DDR3 for Dummies – 2nd HP Special Edition eBook is available at no cost by registration and download  

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RDIMMs have a register on-board the DIMM (hence the name “registered” DIMM). The register/PLL is used to buffer the address and control lines and clocks only. Consequently, none of the data goes through the register /PLL on an RDIMM (PLL is Phase Locked Loop. On prior generations (DDR2), the Register - for buffer the address and control lines - and the PLL for generating extra copies of the clock were separate, but for DDR3 they are in a single part).