HP GS1280 manual Adapters Installed Max Bus Speed, Pci, 4X AGP

QuickSpecs

HP AlphaServer GS1280 Systems

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

				Bus Loading,
Port (Bus) #	Slot #	Maximum Bus Speed	Signal Voltage	Adapters Installed	Max Bus Speed
				(contiguously starting
				with Slot 1)
0	1	133 MHz	3.3V	1 PCI	66 MHz
				1 PCI-X	133 MHz
1	1	66 MHz	3.3V	1 or 2 PCI	66 MHz
	2	66 MHz	3.3V
				3 or 4 PCI	50 MHz
	3	66 MHz	3.3V
				1 to 4 PCI-X	66 MHz
	4	66 MHz	3.3V
3	1	4X AGP	1.5V	1 AGP	4X

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.

DA - 11921 Worldwide — Version 24 — July 23, 2007 Page 25