Specifications

5102ch01.fm Draft Document for Review May 12, 2014 12:46 pm
6 IBM Power System S822 Technical Overview and Introduction
򐂰 Two 10-core, 3.42 GHz processors (#EPXD) requires that twenty processor activation
codes be ordered. A maximum of twenty processor activation code features (#EPY1) is
required.
Table 1-3 summarizes the processor features that are available for the Power S822.
Table 1-3 Processor features for the Power S822
1.4.5 Memory features
A minimum 32 GB of memory is required on the Power S822 system. Memory upgrades
require memory installed in pairs. The minimum memory is two 16 GB, 1600 MHz DDR3
memory modules (#EM83).
Plans for future memory upgrades should be taken into account when deciding which
memory feature size to use at the time of initial system order.
Table 1-4 lists memory features that are available on the Power S822 system.
Table 1-4 Summary of memory features
1.4.6 PCIe slots
The Power S822 has up to nine PCIe hot plug Gen3 slots, providing excellent configuration
flexibility and expandability. For future usage of even more PCIe slots, there is a Statement of
Direction for an I/O drawer with PCIe slots available.
With two POWER8 processor dual-chip modules (DCM), a maximum of nine PCIe Gen3 slots
are available. Four are x16 LP slots, and five are x8 Gen3 LP slots.
With one POWER8 processor DCM, a maximum of six PCIe Gen3 slots are available. Two
are x16 LP slots, and four are x8 Gen3 LP slots.
The x16 slots can provide up to twice the bandwidth of x8 slots because they offer twice as
many PCIe lanes. PCIe Gen3 slots can support up to twice the bandwidth of a PCIe Gen2 slot
and up to four times the band-width of a PCIe Gen1 slot, assuming an equivalent number of
PCIe lanes.
The new servers are smarter about energy efficiency for cooling PCIe adapter environment.
They sense which IBM PCIe adapters are installed in their PCIe slots and if an adapter
Feature code Processor module description
EPX1 6-core 3.89 GHz POWER8 processor card
EPXD 10-core 3.42 GHz POWER8 processor card
Feature code DIMM capacity Access rate Maximum quantity
EM83 16 GB 1600 MHz 16
EM84 32 GB 1600 MHz 16
EM85 64 GB 1600 MHz 16
Note: One of the x8 PCIe slots is used for a PCIe2 LP 4-port 1Gb Ethernet Adapter
(#5260).