Intel SR1670HV Service Guide - Page 31

Hardware Setup Figure 20. DDR3 DIMM Sockets Location 2.3.2 Memory Support Supported memory follows the DDR3 specification and meets the following characteristics: ƒ 800 MHz, 1066 MHz or 1333 MHz operating frequencies ƒ Single-rank (SR), dual-rank (DR), and quad-rank (QR) ƒ Registered DIMM (RDIMM) or Unbuffered DIMM (UDIMM) ƒ RDIMMs must be ECC only ƒ UDIMMs can be ECC or non-ECC and can be mixed within a common configuration ƒ The Channel Independent mode is the only memory RAS mode that supports non-ECC DIMMs. ƒ The presence of a single non-ECC UDIMM results in the disabling of ECC functionality. ƒ RDIMMs and UDIMMs cannot be mixed within a common system memory configuration The following table shows the maximum memory amounts using RDIMM type memory: Table 7. Maximum Memory Allocation Using RDIMMs Single Rank RDIMMs 800 MHz and 1066 MHz Dual Rank RDIMMs 800 MHz and 1066 MHz Quad Rank RDIMMs (1) 800 MHz only 48 GB (12x 4GB DIMMs) 96 GB (12x 8GB DIMMs) 96 GB (12x 8GB DIMMs) NOTE: Due to thermal requirements needed to support Quad Rank x4 DDR3 DIMMs, the Intel® Server System SR1670HV does not support this memory type. 16 Intel® Server System SR1670HV Service Guide