Hardware Reference
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which also requires an external chipset North Bridge, in this case called an I/O Hub (IOH). Socket
LGA1366 uses a land grid array format, so the pins are on the socket, rather than the processor.
Socket LGA1366 is shown in Figure 3.14 .
Figure 3.14. Socket LGA1366 (Socket B).
Socket LGA1366 is designed to interface between a processor and an IOH, which is the new name
used for the North Bridge component in supporting 5x series chipsets. The LGA1366 interface
includes the following:
QPI (Quick Path Interconnect) —For data transfer between the processor and the IOH. QPI
transfers 2 bytes per cycle at either 4.8 or 6.4GHz, resulting in a bandwidth of 9.6 or 12.8GBps.
DDR3 triple-channel —For direct connection between the memory controller integrated into
the processor and DDR3 SDRAM modules in a triple-channel configuration.
LGA1366 is designed for high-end PC, workstation, or server use. It supports configurations with
multiple processors.
Socket LGA1155
Socket LGA1155 (also known as Socket H2 ) was introduced in January 2011 to support Intel's Sandy
Bridge (second-generation) Core i Series processors, which now include Turbo Boost overclocking.
Socket LGA1155 uses a land grid array format, so the pins are on the socket, rather than the
processor. Socket LGA1155 uses the same cover plate as Socket 1156, but is not interchangeable
with it. Socket LGA1155 is also used by Intel's Ivy Bridge (third-generation) Core i Series
processors. LGA1155 supports up to 16 PCIe v3 lanes and 8 PCIe 2.0 lanes.
Socket LGA1155 is shown in Figure 3.15 .
 
 
 
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