Power Supply - Intel E39545-004 Service Manual

Workstation Board Features
Channel Population Requirements for Memory RAS Modes
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The Intel Workstation Board S5520SC supports two memory RAS modes: Independent Channel Mode, and Mirrored
Channel Mode. The rules on channel population and channel matching vary by the RAS mode used. Note that support of
RAS modes that require matching DIMM population between channels (Mirroring) and require that ECC DIMMs be populated.
Independent Mode is the only mode that supports non-ECC DIMMs in addition to ECC DIMMs.
Independent Channel Mode
You can populate channels in any order in Independent Channel Mode. You can populate all three channels in any order and
have no matching requirements. All channels must run at the same interface frequency, but individual channels may run at
different DIMM timings (RAS latency, CAS latency, and so forth).
Mirrored Channel Mode
In Mirrored Channel Mode, the memory contents are mirrored between Channel A (D) and Channel B (E). As a result of the
mirroring, the total physical memory available to the system is half of what is populated. Mirrored Channel Mode requires that
Channel A (D) and Channel B (E) must be populated identically. DIMM slot populations within a channel do not have to be
identical but the same DIMM slot location across Channel A (D) and Channel B (E) must be populated the same. Channel C
(F) is unused in Mirrored Channel Mode.
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NOTE
For help with memory population rules, see the Intel

Power Supply

A minimum of 670 W is required. Your supply must provide a minimum of 3 A of 5-V standby current or the board will not boot.
Intel® Workstation Board S5520SC Service Guide
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Workstation Board S5520SC Technical Product Specification.
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