Technical Product Specification

Functional Architecture Intel® Server Board S5520UR and S5520URT TPS
Intel order number E44031-012 Revision 1.9
20
– Single- and Dual-Rank
– x8 DRAM with 1 Gb or 2 Gb technology
– DDR3 1333, DDR3 1066, and DDR3 800
 The Intel
®
Xeon
®
Processor 5600 Series on the Intel
®
Server Board S5520UR,
S5520URT supports the following DIMM and DRAM technologies:
o RDIMMs:
– Single-, Dual-, and Quad-Rank
– The Intel
®
Xeon
®
Processor 5600 Series support all Intel
®
Xeon
®
Processor 5500 Series memory configuration.
– Any combination of x 4 or x8 RDIMMs, with 1 Gb, 2 Gb or 4Gb DRAM
density, is supported.
– All channels in a system will run at fastest common frequency.
– If 1.35V and 1.5V DIMMs are mixed, the DIMMs will run at 1.5V
o UDIMMs:
– Single- and Dual-Rank
– The Intel
®
Xeon
®
Processor 5600 Series support all Intel
®
Xeon
®
Processor 5500 Series memory configuration.
– Any combination of x 8 or x16 UDIMMs, with 1 Gb, 2 Gb DRAM density, is
supported.
– 2 DIMMs Populated per Channel at 1333 MT/s is only supported on
UDIMMs with ECC support.
– DDR3 1333, DDR3 1066, and DDR3 800
– If 1.35V and 1.5V DIMMs are mixed, the DIMMs will run at 1.5V
– The Intel
®
Xeon
®
Processor 5600 Series and DDR3L UDIMMs without
ECC is not a validated configuration.
3.2.2 Processor Cores, QPI Links and DDR3 Channels Frequency Configuration
The Intel
®
Xeon
®
5500 series processor and Intel
®
Xeon
®
5600 series processor connects to
other Intel
®
Xeon
®
5500 series processor and Intel
®
Xeon
®
5600 series processor and Intel
®
5520 IOH through the Intel
®
QPI link interface. The frequencies of the processor cores and the
QPI links of Intel
®
Xeon
®
5500 series processor and Intel
®
Xeon
®
5600 series processor are
independent from each other. There are no gear-ratio requirements for the Intel
®
Xeon
®
Processor 5500 Series and Intel
®
Xeon
®
5600 series processor.
Intel
®
5520 IOH supports 4.8 GT/s, 5.86 GT/s, and 6.4 GT/s frequencies for the QPI links.
During QPI initialization, the BIOS configures both endpoints of each QPI link to the same
supportable speeds for the correct operation.
During memory discovery, the BIOS arrives at a fastest common frequency that matches the
requirements of all components of the memory system and then configures the DDR3 DIMMs
for the fastest common frequency.