HP AlphaServer GS1280 Model 16 Specification page 25

QuickSpecs
ES/GS Common Options
For PCI-X capable slots:
All universal or 3.3V PCI and PCI-X cards are supported,
EXCEPT: UltraSCSI wide differential adapter, 32-bit/33-MHz PCI adapter (3X-KZPBA-CC)
PCI-X protocol is used on the bus, but reverts to PCI protocol in these cases:
When one or more PCI cards are in a bus segment
Gigabit Ethernet, Rev A (DEGXA-SA/TA) is in the bus segment
An I/O bus segment will operate at the least common denominator of the adapters installed or the lower speeds
dictated by bus loading (as shown in the tables), whichever is less.
The PCI-X card slots must be populated contiguously starting with slot 1; otherwise the bus will run at 33 MHz PCI.
2P Building Block Drawer Slot Specifications
Port (Bus) # Slot #
0
1
1 1
2
3
4
3 1
Standard I/O Drawer used in ES47, ES80, and GS1280 Systems
For PCI-X capable slots:
All universal or 3.3V PCI and PCI-X cards are supported,
EXCEPT: UltraSCSI wide differential adapter, 32-bit/33-MHz PCI adapter (3X-KZPBA-CC)
PCI-X protocol is used on the bus, but reverts to PCI protocol in these cases:
When one or more PCI cards are in a bus segment
With more than five (5) cards in a bus segment
Gigabit Ethernet, Rev A (DEGXA-SA/TA) is in the bus segment
PCI 5V slots support ONLY:
For cluster support, CI host bus adapter (CIPCA-BA)
A legacy UltraSCSI wide differential adapter 32-bit/33-MHz PCI adapter (3X-KZPBA-CC)
An I/O bus segment will operate at the least common denominator of the adapters installed or the lower speeds
dictated by bus loading (as shown in the tables), whichever is less.
The PCI-X card slots must be populated contiguously starting with slot 1; otherwise the bus will run at 33-MHz PCI.
Maximum Bus Speed
133 MHz
66 MHz
66 MHz
66 MHz
66 MHz
4X AGP
DA - 11921 Worldwide — Version 24 — July 23, 2007
HP AlphaServer GS1280 Systems
Bus Loading,
Adapters Installed
Signal Voltage
(contiguously starting
with Slot 1)
1 PCI
3.3V
1 PCI-X
3.3V
1 or 2 PCI
3.3V
3 or 4 PCI
3.3V
1 to 4 PCI-X
3.3V
1.5V 1 AGP
Max Bus Speed
66 MHz
133 MHz
66 MHz
50 MHz
66 MHz
4X
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