HP ProLiant G7 c-Class server blades with Intel® Xeon® processors

Table 1 summarizes the choices available for DDR3 memory.

Table 1. DDR3 memory options

Type DIMM

capacity

(GB)

Rank Max. data rate in

MT/s (1 or 2*

DIMMs/channel)

Max. data rate in MT/s

(3 DIMMs/channel)

PC3-10600R RDIMM 2 dual 1333 800

PC3-10600R RDIMM 4 dual 1333 800

PC3-10600R RDIMM 8 dual 1333 800

PC3-10600E UDIMM 1 single 1333** N/A

PC3-10600E UDIMM 2 dual 1333** N/A

PC3L-10600R RDIMM 4 single 1333 800

PC3L-10600R RDIMM 8 dual 1333 800

PC3-8500R RDIMM 16 Quad 1066 N/A

PC3-10600E UDIMM 4 dual 1333** N/A

* HP branded DIMMs only

**1333 MT/s in platforms with 12 DIMM slots. 1066 MT/s in platforms with 18 DIMM slots

For detailed memory configuration guidelines, use the Online DDR3 Memory Configuration Tool

available on the HP website:

www.hp.com/go/DDR-3memory-configurator.

I/O technologies

HP has been a leader in the development and implementation of industry-standard I/O technology

and continues to be an active member of the PCI Special Interest Group.

HP ProLiant c-Class server

blades support PCI Express (PCIe), serial attached SCSI (SAS), serial ATA (SATA) I/O technologies,

FlexFabric CNA or Multifunction 1Gb or 10Gb Ethernet adapters, 4Gb or 8Gb Fibre Channel, and

4X QDR (40Gb) InfiniBand.

PCI Express technology

PCIe allows administrators to add internal expansion cards that support various system capabilities

and connection to external storage blades. The PCIe serial interface provides point-to-point

connections between the chipset I/O controller hub and I/O devices. Each PCIe serial link consists of

one or more dual-simplex lanes. Each lane contains a send pair and a receive pair to transmit data at

the signaling rate in both directions simultaneously (Figure 5). PCIe 1.0 has a signaling rate of

2.5Gb/s per direction per lane. PCIe 2.0 doubles this per-lane signaling rate to 5Gb/s. This

flexibility allows slower devices to transmit on a single lane with a relatively small number of pins

while faster devices can transmit on more lanes as required.

For additional information about PCI Express technology, see the technology brief titled “HP local I/O

technology for ProLiant and BladeSystem servers”:

http://h20000.www2.hp.com/bc/docs

/support/SupportManual/c00231623/c00231623.pdf.