Specifications
NTM6900 / WTM7026 Technical Reference
DDR3 Memory
Each processor on the motherboard supports three, dual-channel, DDR3-1333 memory interfaces. There are
twelve DIMM sockets on the board and each one can support up to 12GB DIMMs for a total possible DDR3
system memory capacity of 144GB. DDR3 memory capacities of 2GB, 4GB and 8GB are more common in
today’s market; thereby, making the maximum practical limit of system memory supported 96GB. The
memory channel transfer rates is 1333MHz when using PC3-10600 (i.e. DDR3-1333) DIMMs. Each of the
channels (BK##A and BK##B) terminates with two dual in-line memory module (DIMM) sockets. The
System BIOS automatically detects memory type, size and speed.
The motherboard uses industry standard gold finger memory modules, which must be PC3-10600, PC3-8500
or PC3-6400 compliant and have the following features:
Gold-plated contacts
ECC registered (72-bit) DDR3 memory
240-pin
The following DIMM sizes are supported:
MT/s
DIMM Type
Rank
Component Density
1333 PC3-10600
Single, Dual, Quad 1GB, 2GB, 4GB, 8GB, 12GB
1066 PC3-8500
Single, Dual, Quad 1GB, 2GB, 4GB, 8GB, 12GB
800 PC3-6400
Single, Dual, Quad 256MB, 512MB, 1GB, 2GB
NOTE 1:
To maximize memory interface speed, populate each memory channel with DDR3 DIMMs having
the same interface speed. The motherboard will support DIMMs with different speeds, but the memory
channel interface will operate speed of the slowest DIMM.
NOTE 2:
Low voltage (DDR3L) DIMMs are not supported.
NOTE 3:
PC3-10600 DIMMs (DDR3-1333) are supported when one DIMM per channel is populated. If two
PC3-10600 DIMMs are installed in the same channel then the BIOS will log an error and operate the memory
channel at 1066 MT/s.
NOTE 4:
Populating the memory channels with DIMMs having different speeds is supported on the
motherboard; however, the overall memory interface speed will run at the speed of the slowest DIMM.
NOTE 5:
If populating a memory channel with a Quad-rank and a Single- or Dual-rank DIMM place the
Quad-rank DIMM farthest from the processor.
NOTE 6:
Populate the memory channels starting with the DIMM socket farthest from the CPU and work you
way toward the processor as illustrated in the chart below:
Population order
CPU1
CPU2
1 BK02A
BK12A
2 BK01A
BK11A
3 BK00A
BK10A
4 BK02B
BK12B
5 BK01B
BK11B
6 BK00B
BK10B
If populating a memory channel with a Quad-rank and a Single- or Dual-rank DIMM place the Quad-rank
DIMM farthest from the processor.
TRENTON Technology Inc.
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