Hardware Operations
1230B0026701
2-10
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The motherboard supports twelve DDR2 667MHz vertical DIMMs to provide up to 48GB with ECC
support. The 667MHz differential memory clocks are driven by the AMD processor with length
matching and impedance controlled through all the DIMM slots.
1U Chassis only support low-profile or Ultra low-profile DIMM.
The location of the DIMM sockets on the motherboard is shown below:
Figure 2-14 System Memory Location
2.5.1 DIMM Population
There are two groups of DIMMs, six in each group on the motherboard to support the processor0 and
processor1 correspondingly. The twelve DIMM sockets are respectively processor0 DIMMA0,
processor0 DIMMB0, processor0 DIMMA1, processor0 DIMMB1, processor0 DIMMA2, processor0
DIMMB2; and processor1 DIMMA0, processor1 DIMMB0, processor1 DIMMA1, processor1 DIMMB1,
processor1 DIMMA2, processor1 DIMMB2. When you insert the DIMM(s), you have to always start
with DIMMA2 and DIMMB2 as a pair.
