Additional memory information: The DDR3 memory interface consists of three channels, with up to two RDIMMs or UDIMMs per channel for single/dual rank and up to two RDIMMs per channel for quad rank. The interface uses 2 GB, 4 GB, 8GB or 16 GB RDIMMs; only 1 GB or 2 GB UDIMMs are supported. The memory mode is dependent on how the memory is populated in the system: Three channels per CPU populated identically Typically, the system will be set to run in Memory Optimized (Independent Channel) mode in this configuration. This mode offers the most DIMM population flexibility and system memory capacity, but offers the least number of RAS (reliability, availability, service) features. -All three channels must be populated identically. -The first two channels per CPU populated identically with the third channel unused  Typically, two channels operate in Advanced ECC (Lockstep) mode with each other by having the cache line split across both channels. This mode provides improved RAS features (SDDC support for x8-based memory). -For Memory Mirroring, two channels operate as mirrors of each other-writes go to both channels and reads alternate between the two channels. -One channel per CPU populated This is a simple Memory Optimized mode. No mirroring or sparing is supported. The R610 memory interface supports memory demand and patrol scrubbing, single-bit correction and multi-bit error detection. Correction of a x4 or x8 device failure is also possible with SDDC in the Advanced ECC mode. Additionally, correction of a x4 device failure is possible in the Memory Optimized mode. -If DIMMs of different speeds are mixed, all channels will operate at the fastest common frequency. -RDIMMs and UDIMMs cannot be mixed. -If memory mirroring is enabled, identical DIMMs must be installed in the same slots across both channels. The third channel of each processor is unavailable for memory mirroring. -The first DIMM slot in each channel is color-coded with white ejection tabs for ease of installation. -The DIMM sockets are placed 450 mils (11.43 mm) apart, center-to-center in order to provide enough space for sufficient airflow to cool stacked DIMMs. -The R610 supports up to 12 DIMMs. DIMMs must be installed in each channel starting with the DIMM slot farthest from the processor. Population order will be identified by the silkscreen designator and the System Information Label (SIL) located on the chassis cover. o Memory Optimized: {1, 2, 3}, {4, 5, 6} o Advanced ECC or Mirrored: {2, 3}, {5, 6} o Quad Rank or UDIMM: {1, 2, 3}, {4, 5, 6} In the scenario's you have presented, each one will work in Optimized mode.  However, adding 1300mhz memory with a 1060 will result in all the memory running at 1060, the fastest common denominator.     Regards,
We would like to upgrade our server's memory but we are confused about the supported configurations. Currently we have 24 GB in 6 slots (4 GB each in A1, A2, A3, B1, B2, B3 slots).  These memory modules are DDR3 1066MHz.  We would like to populate the remaining 6 slots with as much RAM as possible. Questions:1) Do I need to purchase 1066MHz RAM, or can I buy 1333 or 1600?2) Can I buy 6 x 8 GB dual-ranked RDIMM modules and simply install them into slots A4, A5, A6, B4, B5, B6?3) If not, what would be the best configuration to get the maximum amount of RAM? Thanks in advance!
R610 RAM Upgrade