Thanks for the details! While I can't personally speak to the validity of any particular memory benchmark tool, I believe there must be a significant performance difference in memory access given the CPU differences. You can compare them side-by-side at ark.intel.com/.../37103,52207 The 2.4GHz E5530 memory controller operates at a maximum rate of 1066MHz. This is going to account for significant performance difference, and to a lesser extent the the fact that the R710 memory is ECC while the desktop memory is not. I hope that helps to clear things up!
Hi, I have a question about memory speed with 4G x 6 ( same size and manufacturer )  I'm confused with result of testing memory speed with sysbench is just 1982.40 MB/sec while my desktop local test server is 3032.88 MB/sec OS on both system is CentOS 6 and up to date. same packages and configurations. Locations of memory is A1,2,3 and B1,2,3 Is it normal or something wrong? Here's part of dmidecode (memory device parts) # dmidecode 2.11SMBIOS 2.6 present.Handle 0x1100, DMI type 17, 28 bytesMemory Device    Array Handle: 0x1000    Error Information Handle: Not Provided    Total Width: 72 bits    Data Width: 64 bits    Size: 4096 MB    Form Factor: DIMM    Set: 1    Locator: DIMM_A1     Bank Locator: Not Specified    Type: DDR3    Type Detail: Synchronous Registered (Buffered)    Speed: 1333 MHz    Manufacturer: xxxxxx    Serial Number: xxxxxx    Asset Tag: xxxxxx    Part Number: xxxxxx      Rank: 2Handle 0x1101, DMI type 17, 28 bytesMemory Device    Array Handle: 0x1000    Error Information Handle: Not Provided    Total Width: 72 bits    Data Width: 64 bits    Size: 4096 MB    Form Factor: DIMM    Set: 1    Locator: DIMM_A2     Bank Locator: Not Specified    Type: DDR3    Type Detail: Synchronous Registered (Buffered)    Speed: 1333 MHz    Manufacturer: xxxxxx    Serial Number: xxxxxx    Asset Tag: xxxxxx    Part Number: xxxxxx      Rank: 2Handle 0x1102, DMI type 17, 28 bytesMemory Device    Array Handle: 0x1000    Error Information Handle: Not Provided    Total Width: 72 bits    Data Width: 64 bits    Size: 4096 MB    Form Factor: DIMM    Set: 2    Locator: DIMM_A3     Bank Locator: Not Specified    Type: DDR3    Type Detail: Synchronous Registered (Buffered)    Speed: 1333 MHz    Manufacturer: xxxxxx    Serial Number: xxxxxx    Asset Tag: xxxxxx    Part Number: xxxxxx      Rank: 2......Handle 0x1109, DMI type 17, 28 bytesMemory Device    Array Handle: 0x1000    Error Information Handle: Not Provided    Total Width: 72 bits    Data Width: 64 bits    Size: 4096 MB    Form Factor: DIMM    Set: 5    Locator: DIMM_B1     Bank Locator: Not Specified    Type: DDR3    Type Detail: Synchronous Registered (Buffered)    Speed: 1333 MHz    Manufacturer: xxxxxx    Serial Number: xxxxxx    Asset Tag: xxxxxx    Part Number: xxxxxx      Rank: 2Handle 0x110A, DMI type 17, 28 bytesMemory Device    Array Handle: 0x1000    Error Information Handle: Not Provided    Total Width: 72 bits    Data Width: 64 bits    Size: 4096 MB    Form Factor: DIMM    Set: 6    Locator: DIMM_B2     Bank Locator: Not Specified    Type: DDR3    Type Detail: Synchronous Registered (Buffered)    Speed: 1333 MHz    Manufacturer: xxxxxx    Serial Number: xxxxxx    Asset Tag: xxxxxx    Part Number: xxxxxx      Rank: 2Handle 0x110B, DMI type 17, 28 bytesMemory Device    Array Handle: 0x1000    Error Information Handle: Not Provided    Total Width: 72 bits    Data Width: 64 bits    Size: 4096 MB    Form Factor: DIMM    Set: 6    Locator: DIMM_B3     Bank Locator: Not Specified    Type: DDR3    Type Detail: Synchronous Registered (Buffered)    Speed: 1333 MHz    Manufacturer: xxxxxx    Serial Number: xxxxxx    Asset Tag: xxxxxx    Part Number: xxxxxx      Rank: 2
PowerEdge R710 memory speed