IBM X3950 X5 Problem Determination And Service Manual page 46

Table 10. Memory expansion module features and operating specifications
v Intel 7500 or 7510 scalable memory
buffer (depending on your model)
with eight memory ports (four
DIMMs on each port)
v Xcellerated Memory Technology
v EXA5 chip set
v QuickPath Interconnect (QPI)
architecture technology:
– Four 6.4 gigatransfers (GT) per
second QuickPath Interconnect
links (for up to 2
microprocessors)
– Three 10.0 GT per second EXA5
scalability links
v Scalability:
– Connects to the (4U) rack
servers using QPI cables
– Connects to other memory
expansion modules, using EXA5
link cables
– Scales up to 2 nodes (two
memory expansion modules +
two servers)
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IBM System x3850 X5 and x3950 X5 Types 7145, 7146, 7143, and 7191: Problem Determination and Service Guide
DIMMs:
v Minimum: 2 DIMMs, 4 GB
v Maximum: 32 DIMM slots (up to
512 GB, 1 TB when 32 GB DIMMs
are available, of memory,
depending on the DIMM size)
v Type of DIMMs: PC3-10600R-999,
1067 MHz, ECC, DDR3 registered
SDRAM dual inline memory
modules (DIMMs)
v Supports 2 GB, 4 GB, 8 GB, and 16
GB DIMMs (32 GB DIMMs when
available)
Fans:
v Five hot-swap 40 mm fans
Power supply:
v One 675-watt (110 - 220 V ac
auto-sensing) standard
v Supports up to two 675-watt (110 -
220 V ac auto-sensing) hot-swap
power supplies with built-in fans
for redundancy support
Light path diagnostics LEDs:
v Board
v Configuration
v Fan
v Link(for QPI and EXA5 links)
v Locate
v Memory
v Power-on
v Power supply