8BPCI Riser Cards and Assembly
Intel® Server System SR2500AL
Revision – 1.6
Intel order number D31980-009
72
9.1 Riser Card Options
The Intel
®
Server Board S5000PAL has two riser slots capable of supporting riser cards for both
1U and 2U system configurations. Because of board placement resulting in different pin
orientations, and expanded technology support associated with the full-height riser, the riser
slots are not the same and require different riser cards.
The low profile riser slot (J5B1) utilizes a 98-pin connector. It is capable of supporting up to two
low profile PCIe* add-in cards. The x8 PCIe bus can support bus speeds of up to 20Gb/S. The
following table provides the supported bus throughput for the given riser card used and the
number of add-in cards installed.
Low Profile Riser
1 add-in card
2 add-in cards
2U X4 X4
Note:
There are no population rules for installing a single low profile add-in card in the 2U low
profile riser card; a single add in card can be installed in either PCI Express* slot. While each
slot can accommodate a x8 card, each slot will only support x4 bus speeds.
The full height riser slot (J4F1) implements Intel
®
Adaptive Slot Technology. This 280-pin
connector is capable of supporting riser cards that meet either the PCI-X* or PCI Express*
technology specifications. The following tables show the maximum bus speed supported with
different add-in card populations.
Full Height Riser
PCI-X “Passive” (Product
Order Code –
ADRPCIXRIS)
1 add-in card
2 add-in cards
3 add-in cards
2U – 3 add-in card slots
Up to 100MHz in top PCI
slot
Up to 100MHz using top
and middle slots
66MHz
Note:
For the 2U PCI-X* (passive) riser card, add-in cards should be installed starting with the
top slot first, followed by the middle, and then the bottom. Any add-in card populated in the
bottom PCI slot will cause the bus to operate at 66MHz.
Full Height Riser
PCI-X “Active” (Product
Order Code –
ADRACTRIS)
1 add-in card
2 add-in cards
3 add-in cards
2U
Up to 133MHz
Up to 133MHz
Up to 133MHz
Note:
Each PCI slot on the 2U PCI-X* (active) riser card operates on an independent PCI bus.
Using an add-in card that operates below 133MHz will not affect the bus speed of the other PCI
slots.
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