Server Board Features
Intel® Server Board SE7520BD2
7
Hardware Requirements
To avoid integration difficulties and possible board damage, your system must meet the
requirements outlined below. For a list of qualified components, see the links under Additional
Information and Software.
Processor
The Intel® Server Board SE7520BD2 supports up to two Intel® Xeon™ processors with an FC-
mPGA4 using Socket 604, and an 800-MHz Front Side Bus (FSB) with frequencies starting at 2.8
GHz using the 90-nanometer technology. Previous generations of the Intel Xeon™ processors are
not supported.
When two processors are installed, both must be of identical revision, core voltage, cache size, and
bus/core speed. When a single processor is installed, it must be in the socket labeled CPU1.
For a link to the complete list of supported processors, see:
http://support.intel.com/support/motherboards/server/se7520bd2/sb/CS-013540.htm
Memory
The Intel® Server Board SE7520BD2 includes three banks of DIMMs across two channels.
Channel A consists of DIMMs 1A, 2A, and 3A. Channel B consists of DIMMs 1B, 2B, and 3B.
Bank 1 (DIMMs 1B and 1A) is closest to the edge of the server board. DIMMs must be identical
within each bank.
The minimum allowed memory is 256 MB, using a single 256 MB DIMM in DIMM slot 1B. The
system operates in single channel when only a single DIMM is installed. The maximum allowed
usable memory is 24 GB of DDR 266 and 16 MB of DDR333, using 4 GB DIMMs.
DIMMs must meet the following requirements:
Use only DDR-266/333 ECC, registered DDR DIMM modules
Have a DIMM organization x72 ECC
Use 184-pin DIMM modules
Support the following sizes: 256 MB, 512 MB, 1 GB, 2 GB, 4GB
i
DDR-333 memory is only supported with BGA package memory on the Intel® Server Board
SE7520BD2. TSOP SDRAM packages will not be supported on DDR-333 DIMMs on the
SE7520BD2 server board
For a complete list of supported memory DIMMs, see:
http://support.intel.com/support/motherboards/server/se7520bd2/sb/CS-013543.htm
.
The Intel® E7520 chipset includes hardware that supports memory mirroring and memory on-line
sparing. Both memory mirroring and memory on-line sparing provide a way to prevent data loss in
case a DIMM fails.
With memory mirroring the system maintains two copies of all data in the memory subsystem. If a
DIMM fails, the data is not lost because the second copy of the data is available from the mirrored
DIMM. The system will not fail due to memory error unless both the primary and the mirrored
copy of the data become corrupt at the same time.
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