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### Sun Fire X4640 Server Features and Components

The Sun Fire X4640 server takes full advantage of the exceptional power and performance of the AMD Opteron processor. The server is a four rack-unit chassis capable of supporting up to eight vertically-mounted customer-replaceable (CRU) CPU modules. Each CPU module is a single-board unit containing a CPU, eight DIMM slots, and on-board diagnostics.

This server provides the following maximum system configurations:

- Eight CPUs (six-core)

- 64 DIMMs (maximum 512 GB)

- Four 2.5-inch (63.5-mm) SAS hard disk drives

- Eight PCI Expansion slots (two PCI-X slots and six PCI-Express (PCIe) slots)

This server is 24 inches (610-mm) deep and is compatible with all data center 28-inch (711.2-mm) racks. Airflow is strictly front-to-back and supports the highest-performance Opteron CPUs at 95° F (35° C) ambient temperature.

Standard I/O includes four 10/100/1000BASE-T Gigabit Ethernet ports, VGA video, serial, four USB ports, and one 10/100BASE-T Ethernet management port. An SAS on-board disk controller supports up to four SAS disk drives.

The Sun Fire X4640 server includes an extensive set of Reliability, Availability, and Serviceability (RAS) features, such as hot-swappable and redundant hard disk drives (when RAID1 is used), fans, and power supplies. The servers also provide an integrated lights out management (ILOM) service processor function, which includes remote boot and remote software upgrades.

Feature or Component | Sun Fire X4640 Server
--- | ---
CPU | Four or Eight CPU modules, each with an AMD Opteron six-core processor (6 Mbyte L3 cache)
Dual Dynamic Power Management | (Split-plane CPU modules only.) Per-processor power management that can reduce idle power consumption.
Processor BIOS | 8 Mbit flash EEPROM with LPC interface
Memory | Up to 64 DIMMs of DDR2
Hard Drives (HDs) | Up to four Serial-Attached SCSI (SAS) HDDs (2.5 inch or 63.5 mm)
Service Processor (SP) | Motorola MPC8248 @ 266 MHz
RAID Options | Four-channel SAS RAID disk controller
Network I/O | Four 10/100/1000BASE-T Gigabit Ethernet ports (RJ-45 connectors) One 10/100BASE-T Ethernet net management port (RJ-45 connector) One RS-232 serial port (RJ-45 connector)
PCI I/O | Two 100-MHz low-profile PCI-X slots Four 8-lane low-profile PCIe slots Two 4-lane low-profile PCIe slots
Other I/O | Five USB 2.0 ports (4 external, 1 internal) One VGA video port
Removable media devices | Internal slim DVD-ROM drive
Power | Four power supplies, 1133W each
Fans | Four front fan modules; also one fan in each power supply Cooling is front-to-back forced air.

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