If you check out the R910 Hardware Owners Manual ( HOM ) from pgs 91 - 107 it lays out the options there. I am not at site to check out our 910s and there doesn't seem to be a Slot Layout diagram in the manual.  So all references indicate the use of memory risers ( which we have ) so the references I include here will also. For a R910 with 4 CPUs and a RAM BIOS setting of "Power Optimized" ( pg 95 ) using 4x 16 GB DIMMS does not appear to be supported.  According to the manual to achieve 64 GB you would need to 4 x 4 GB DIMMs in Riser A of each CPU... If I am reading this right... To make use of the 16 GB DIMMs your RAM/CPU and Total RAM would need to be 256 GB / CPU for a total of 1024 GB.  To achieve this you will also need to be using "Power and Performance Optomized" or "Expandability" memory modes. Like I said we had a dickens of a time getting a working config for our systems so I would advise you use the HOM to identify the capacity you want and then get the DIMMs indicated for the Memory Mode you wish to run... "Table 3-2. Memory Configurations (Four Processors)" * I tried to paste in the table but the formatting went wonky... *
Hi, I have a R910 server, with E8837 * 4 CPU and 64 G memory (Windows Server 2008 standard can only support 32G), our application uses Intel IPP package to do some image processing job. if I bind our application to one of the CPU and run a performance test method, it takes 0.8 second. if launch 4 copy of our application, bind each copy to one CPU, invokes the test method at the same time, each will take 1.9 second, the time is doubled 4 application only uses 10G memory, why it's so slow when run the same method?   the hardware seems is OK after tested by Dell_DSET, so what causes the delay??     Probe Name  Status  Cause      System Board Power Optimized  Normal  [N/A]   Status  Connector Name  Processor Brand  Processor Version  Current Speed  State  Core Count                CPU1  Intel(R) Xeon(R) CPU E7- 8837 @ 2.67GHz  Model 47 Stepping 2  2666 MHz  Present  8   CPU2  Intel(R) Xeon(R) CPU E7- 8837 @ 2.67GHz  Model 47 Stepping 2  2666 MHz  Present  8   CPU3  Intel(R) Xeon(R) CPU E7- 8837 @ 2.67GHz  Model 47 Stepping 2  2666 MHz  Present  8   CPU4  Intel(R) Xeon(R) CPU E7- 8837 @ 2.67GHz  Model 47 Stepping 2  2666 MHz  Present  8   DIMM A1  28711928  NT4GC72B4PB0NL-CG  N/A  Nanya Technology (830B04B3830B)  Mon May 16 20:00:00 2011 DIMM A2  CE711926  NT4GC72B4PB0NL-CG  N/A  Nanya Technology (830B04B3830B)  Mon May 16 20:00:00 2011 DIMM A3  56721926  NT4GC72B4PB0NL-CG  N/A  Nanya Technology (830B04B3830B)  Mon May 16 20:00:00 2011 DIMM A4  DC711928  NT4GC72B4PB0NL-CG  N/A  Nanya Technology (830B04B3830B)  Mon May 16 20:00:00 2011 DIMM C1  1B72192A  NT4GC72B4PB0NL-CG  N/A  Nanya Technology (830B04B3830B)  Mon May 16 20:00:00 2011 DIMM C2  A1711926  NT4GC72B4PB0NL-CG  N/A  Nanya Technology (830B04B3830B)  Mon May 16 20:00:00 2011 DIMM C3  64721926  NT4GC72B4PB0NL-CG  N/A  Nanya Technology (830B04B3830B)  Mon May 16 20:00:00 2011 DIMM C4  6C701928  NT4GC72B4PB0NL-CG  N/A  Nanya Technology (830B04B3830B)  Mon May 16 20:00:00 2011 DIMM E1  62711928  NT4GC72B4PB0NL-CG  N/A  Nanya Technology (830B04B3830B)  Mon May 16 20:00:00 2011 DIMM E2  81721927  NT4GC72B4PB0NL-CG  N/A  Nanya Technology (830B04B3830B)  Mon May 16 20:00:00 2011 DIMM E3  37721927  NT4GC72B4PB0NL-CG  N/A  Nanya Technology (830B04B3830B)  Mon May 16 20:00:00 2011 DIMM E4  00711928  NT4GC72B4PB0NL-CG  N/A  Nanya Technology (830B04B3830B)  Mon May 16 20:00:00 2011 DIMM G1  49721929  NT4GC72B4PB0NL-CG  N/A  Nanya Technology (830B04B3830B)  Mon May 16 20:00:00 2011 DIMM G2  A271192A  NT4GC72B4PB0NL-CG  N/A  Nanya Technology (830B04B3830B)  Mon May 16 20:00:00 2011 DIMM G3  E9711927  NT4GC72B4PB0NL-CG  N/A  Nanya Technology (830B04B3830B)  Mon May 16 20:00:00 2011
Poor performance for R910 server