Chapter 3. IBM System x3850 X5 and x3950 X5 61
Figure 3-5 MAX5 connectors and LEDs
Figure 3-6 shows the internals of the MAX5 including the IBM EXA chip, which acts as the
interface to the QPI links from the x3850 X5.
Figure 3-6 MAX5 memory expansion unit internals
For an in-depth look at the MAX5 offering, see 3.5, “MAX5” on page 68.
3.1.4 Comparing the x3850 X5 to the x3850 M2
Table 3-1 on page 62 shows a high-level comparison between the eX4-based x3850 M2 and
the eX5-based x3850 X5.
Power-on
LED
Locate
LED
System
error
LED
AC LED (green)
DC LED (green)
Power supply
fault (error) LED
QPI
port 1
Power
connectors
EXA port 1
LEDlink
EXA port 2
LEDlink
EXA port 3
LEDlink
EXA
port 1
EXA
port 2
EXA
port 3
QPI
port 2
QPI
port 3
QPI
port 4
32 DIMM socketsIntel Scalable
Memory buffers
Five hot-swap
fans
MAX5 slides
out from the
front
IBM EXA chip
Power supply
connectors
62 IBM eX5 Implementation Guide
Table 3-1 Comparison of the x3850 M2 to the x3850 X5
Subsystem x3850 X5 x3850 M2
CPU card 򐂰 No Voltage Regulator Modules (VRMs),
4 Voltage Regulator Down (VRDs)
򐂰 Top access to CPUs and CPU card
򐂰 No Voltage Regulator Down (VRDs),
4 Voltage Regulator Modules (VRMs)
򐂰 Top access to CPU/VRM and CPU card
Memory 򐂰 Eight memory cards
򐂰 DDR3 PC3-10600 running at up to 1066
MHz (processor dependent)
򐂰 Eight DIMMs per memory card
򐂰 64 DIMMs per chassis, maximum
򐂰 With the MAX5, 96 DIMMs per chassis
򐂰 Four memory cards
򐂰 DDR2 PC2-5300 running at 533 MHz
򐂰 Eight DIMMs per memory card
򐂰 32 DIMMs per chassis, maximum
PCIe subsystem 򐂰 Intel 7500 “Boxboro” chip set
򐂰 All slots PCIe 2.0
򐂰 Seven slots total at 5 Gb, 5 GHz,
500 MBps per lane
򐂰 Slot 1 PCIe x16, Slot2 x4 (x8
mechanical), Slots 3 - 7 x8
򐂰 All slots non-hot-swap
򐂰 IBM CalIOC2 2.0 chip set
򐂰 All slots PCIe 1.1
򐂰 Seven slots total at 2.5 GHz, 2.5 Gb,
250 MBps per lane
򐂰 Slot 1 x16, slot 2 x8 (x4), slots 3 - 7 x8
򐂰 Slots 6 - 7 are hot-swap
SAS controller 򐂰 Standard ServeRAID BR10i with
RAID 0 and 1 (most models)
򐂰 Optional ServeRAID M5015 with
RAID 0, 1, and 5
򐂰 Upgrade to RAID-6 and encryption
򐂰 No external SAS port
򐂰 LSI Logic 1078 with RAID-1
򐂰 Upgrade key for RAID-5
򐂰 SAS 4x external port for EXP3000 attach
Ethernet controller 򐂰 BCM 5709 dual-port Gigabit Ethernet,
򐂰 PCIe 2.0 x4
򐂰 Dual-port Emulex 10Gb Ethernet adapter
in PCIe slot 7 on all models except ARx
򐂰 BCM 5709 dual-port Gigabit Ethernet
򐂰 PCIe 1.1 x4
Video controller 򐂰 Matrox G200 in IMM
򐂰 16 MB VRAM
򐂰 ATI RN50 on Remote Supervisor Adapter
(RSA2)
򐂰 16 MB VRAM
Service processor 򐂰 Maxim VSC452 Integrated BMC (IMM)
򐂰 Remote presence feature is standard
򐂰 RSA2 standard
򐂰 Remote presence feature is optional
Disk drive support 򐂰 Eight 2.5-inch internal drive bays or 16
1.8-inch solid-state drive bays
򐂰 Support for SATA and SSD
򐂰 Four 2.5-inch internal drive bays
USB, SuperIO design 򐂰 ICH10 chip set
򐂰 USB: Six external ports, two internal
򐂰 No SuperIO
򐂰 No PS/2 keyboard/mouse connectors
򐂰 No diskette drive controller
򐂰 Optional optical drive
򐂰 ICH7 chip set
򐂰 USB: Five external ports, one internal
򐂰 No SuperIO
򐂰 No PS/2 keyboard/mouse connectors
򐂰 No diskette drive controller
Fans 򐂰 2x 120 mm
򐂰 2x 60 mm
򐂰 2x 120 mm in power supplies
򐂰 4x 120 mm
򐂰 2x 92 mm
򐂰 2x 80 mm in power supplies
Power supply units 򐂰 1975 W hot-swap, full redundancy high
voltage, 875 W low voltage
򐂰 Rear access
򐂰 Two power supplies standard; two
maximum (most models)
a
a. Configuration restrictions at 110 V
򐂰 1440 W hot-swap, full redundancy high
voltage, 720 W low voltage
򐂰 Rear access
򐂰 Two power supplies standard; two
maximum

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