Datasheet
Intel
®
Server Board S5000PAL/S5000XAL TPS Functional Architecture
Revision 2.0
Intel order number: D31979-011
15
3.1.2.1 Processor Population Rules
When two processors are installed, both must be of identical revision, core voltage, and
bus/core speed. Mixed processor steppings are supported.
However, the stepping of one
processor cannot be greater than one stepping back of the other. When only one processor is
installed, it must be in the socket labeled CPU1. The other socket must be empty.
The board is designed to provide up to 130A of current per processor. Processors with higher
current requirements are not supported.
No terminator is required in the second processor socket when using a single processor
configuration.
3.1.2.2 Common Enabling Kit (CEK) Design Support
The server board complies with Intel’s Common Enabling Kit (CEK) processor mounting and
heat sink retention solution. The server board ships with a CEK spring snapped onto the
underside of the server board, beneath each processor socket. The heat sink attaches to the
CEK, over the top of the processor and the thermal interface material (TIM). See the figure
below for the stacking order of the chassis, CEK spring, server board, TIM, and heat sink.
The CEK spring is removable, allowing for the use of non-Intel heat sink retention solutions.
Note: The processor heat sink and CEK spring shown in the following diagram are for reference
purposes only.
The actual processor heat sink and CEK solutions compatible with this
generation server board may be of a different design.
Heatsink assembly
Thermal interface material (TIM)
Server board
CEK spring
Chassis
Figure 11. CEK Processor Mounting
3.1.3 Memory Sub-system
On the Intel
®
Server Board S5000PAL/S5000XAL, the MCH provides four channels of Fully
Buffered DIMM (FB-DIMM) memory. Each channel can support up to 2 Dual Ranked FB-DIMM
DDR2 DIMMs. FB-DIMM memory channels are organized in to two branches for support of
RAID 1 (mirroring). The MCH can support up to 8 DIMMs or a maximum memory size of 64 GB
physical memory in non-mirrored mode and 32 GB physical memory in a mirrored configuration.
The read bandwidth for each FB-DIMM channel is 4.25 GB/s for DDR2 533 FB-DIMM memory
which gives a total read bandwidth of 17 GB/s for four FB-DIMM channels. Thus, this provides
8.5 GB/s of write memory bandwidth for four FB-DIMM channels. The read bandwidth for each