Hi, 16GB DIMM support was added in BIOS 1.1.5.  The memory speed of each channel depends on the memory configuration: – For single or dual-rank memory modules: • One memory module per channel supports up to 1333 MHz. • Two memory modules per channel supports up to 1067 MHz. – For quad-rank memory modules: • One memory module per channel supports up to 1067 MHz. • Two memory modules per channel are limited to 800 MHz, regardless of memory module speed.  memory population rules Page 120
Hello,I need to update my memories DELL R410 server, but information on the Internet is unclear. I can not find reliable information related to the maximum amount of memory that supports this server. I need to install memories 128 GB (4 GB x16), and I would like to know the maximum frequency (1066 MHz or 1333 MHz). In some DELL documents specified to be 1066 MHz and in others that may be of 1333 and other documents specified that the maximum amount supported is 64GB. It is possible a recommendation of memories from other manufacturers? regards 
PowerEdge R410 Memory Upgrade