
Table 1. Features and specifications
Microprocessor (not standard on
System x3950 Emodels):
vIntel
®
Xeon
™
MP
v1MB (minimum) Level-2 cache
v4MB or 8MB Level-3 cache
v667 MHz front-side bus (FSB)
vSupport for up to four microprocessors
Note: Use the Configuration/Setup Utility
program to determine the type and speed
of the microprocessors.
Memory (not standard on System x3950
Emodels):
vMinimum: 2GB depending on server
model, expandable to 64 GB
vType: 333 MHz, registered, ECC,
PC2-3200 double data rate (DDR) II,
SDRAM
vSizes: 1GB, 2GB, or 4GB in pairs
vConnectors: Two-way interleaved, four
dual inline memory module (DIMM)
connectors per memory card
vMaximum: Four memory cards, each
card containing two pairs of PC2-3200
DDRII DIMMs
Drives:
vSlim DVD-ROM: IDE
vSerial Attached SCSI (SAS) hard disk
drives
Expansion bays:
vSix SAS, 2.5-inch bays
vOne 12.7-mm removable-media drive
bay (DVD drive installed, standard on
some models only)
Expansion slots:
Six PCI-X 2.0 hot-plug 266 MHz/64-bit
slots
Upgradeable microcode:
System BIOS, diagnostics, service
processor, BMC, and SAS microcode
Power supply:
vStandard: Two dual-rated power
supplies
–1300 watts at 220 Vac input
–650 watts at 110 Vac input
v
Hot-swappable at 220 Vac only
Size:
v3U
vHeight: 128.35 mm (5.05 in.)
vDepth: 715 mm (28.15 in.)
vWidth: 440 mm (17.32 in.)
vWeight: approximately 38.5 kg (85 lb)
when fully configured or 31.75 kg (70
lb) minimum
Integrated functions:
vBaseboard management controller
vIBM EXA-32 Chipset with integrated
memory and I/O controller
vService processor support for Remote
Supervisor Adapter II SlimLine
vLight path diagnostics
vThree Universal Serial Bus (USB) ports
(2.0)
–Two on rear of server
–One on front of server
v
Broadcom 5704C dual 10/100/1000
Gigabit Ethernet controllers
vATI 7000-M video
–16 MB video memory
–SVGA compatible
v
Mouse connector
vKeyboard connector
vSerial connector
vSMP Expansion Ports
Acoustical noise emissions:
vSound power, idle: 6.6 bel declared
vSound power, operating: 6.6 bel
declared
Environment:
vAir temperature:
–Server on:
-10° to 35°C (50° to 95°F); altitude:
0to 914 m(3000 ft). If the server
has adual-core microprocessor, at
maximum power reduce the 35°C
by 1°C per 300 mabove sea level,
or the microprocessor might throttle
to remain within the internal thermal
specifications.
-10 to 32°C (50° to 90°F); altitude:
914 mto 2133 m(7000 ft).
–Server off: 10° to 43°C (50.0° to
109.4°F); maximum altitude: 2133 m
(6998.0 ft)
vHumidity:
–Server on: 8% to 80%
–Server off: 8% to 80%
Heat output:
Approximate heat output in British thermal
units (Btu) per hour:
vMinimum configuration: 1364 Btu (400
watts) per hour
vMaximum configuration: 5780 Btu (1700
watts) per hour
Electrical input:
vSine-wave input (50-60 Hz) required
vInput voltage low range:
–Minimum: 100 Vac
–Maximum: 127 Vac
v
Input voltage high range:
–Minimum: 200 Vac
–Maximum: 240 Vac
v
Approximate input kilovolt-amperes (kVA):
–Minimum: 0.40 kVA
–Maximum: 1.6 kVA
Scalability support:
Maximum configuration:
vEight nodes
v32-way operation
v128 DIMMs
v48 SAS hard disk drives
v48 PCI-X adapters
4IBM System x3950 Type 8872 and System x3950 EType 8874: User’s Guide