Hello ciberspace_retro,   Yes you can mix those DIMMs. Please note No RDIMM support only UDIMM are supported .   Additional memory specifics regarding memory include:   Supports 2 channels per processor Supports Un-buffered (UDIMM) ECC DDR3 DIMMs. Single Rank and Dual Rank UDIMMs supported No RDIMM support Non-ECC DIMMs are not supported Support for up to 32GB UDIMM memory (with 4 x 8GB UDIMMs) No support for quad rank DIMMs   Example DIMMS: Part#: 0NY71 DIMM,4G,1600,1RX8,UBE,LV,YWJTR 4GB, DIMM, 1600MHZ, 256x16, Unbuffered, DDR3L, 240 Pin, Single Rank, 1.35V, Unbuffered error correction code, Low Voltage WM5YY DIMM,4GB,1600,2RX8,240,UBE 4GB, DIMM, 1600MHZ, Unbuffered, DDR3, 240 Pin, Dual Rank, 1.5V, Unbuffered error correction code   Other memory information can be found in the Owner's manual  System Memory page 86 [URL]  
Hi, Can i mix two low voltage 1.35v 2x4GB and other two 1.5v 2x4GB on this server? Thank you  
Dell PowerEdge T110 II mixed memory 2x1.35v + 2x1.5v works