Intel® Server Board SE7520BD2 Technical Product Specification
Product Overview
Revision 1.3
Intel Confidential
15
2.8.1 DDR-1
266
Memory
For DDR-I 266-MHz installation, 6 loads per channel are allowed on the Server Board
SE7520BD2, although the Intel® E7520 chipset supports 8 loads. This means that for both
single/dual rank DIMMs, the test setups previously listed can be populated with no further
considerations. The test setups assume dual channel operation. The maximum memory that
can be populated is 24GB once 4-GB DIMMs are available.
2.8.2 DDR-1
333
Memory
For DDR-I 333-MHz installation, 4 loads per memory channel are allowed. This is a limitation of
the data duty cycle of the higher frequency. This means that for both single/dual rank DIMMs,
the test setups previously listed must be populated according to the following table for each
memory channel. The test setups assume dual-channel operation. Empty slots are also noted.
The maximum memory that can be populated is 16 GB once 4-GB DIMMs are available. TSOP
DDR333 DIMMs are not supported due to memory timing violations. Based on this, the Server
Board SE7520BD2 and all Intel®-based E7520 chipset boards only support DDR333 memory in
the BGA package. Thus, the Server Board SE7520BD2 does not support DDR333 SDRAMs in
TSOP packages.
The following diagram identifies the memory bank locations on the baseboard.
Figure 7. DIMM Socket Configuration
Table 3. DDR-1 266-MHz Memory Population
DIMM Configuration
DIMM1
DIMM2
DIMM3
1 Single Rank
Single Rank
Empty
Empty
1 Dual Rank
Dual Rank
Empty
Empty
2 Single Rank
Single Rank
Single Rank
Empty
1B
1A
2B
2A
3B
3A
Bank 1
Bank 2
Bank 3
MCH
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