JXT6966

Trenton JXT6966 92-506966-XXX System Host Board

The JXT6966 and JXTS6966 are combo-class, PICMG® 1.3 system host boards that support the Intel®

Xeon® C5500 processors. These CPUs feature the Nehalem micro-architecture and were developed under

the codename Jasper Forest. The processors have a DDR3 integrated memory controller that supports three

DDR3-1333 memory interface channels per processor resulting in six direct access memory interfaces on

the JXT6966 board version. The six interfaces connect to six DDR3 Mini-DIMM sockets. With 4GB

DDR3 Mini-DIMMs the total system memory capacity for a JXT6966 is 24GB and will double to 48GB

once 8GB DDR3 Mini-DIMMs come on the market. The maximum theoretical system memory capacity

for the JXT6966 is 192GB. The system memory capacities are cut in half for the single processor

JXTS6966 board version.

PCI Express 2.0/1.1 links are built into the processors and the Intel® Quick Path Interface (Intel® QPI)

between processors on the JXT6966 enables CPU resource sharing for an additional system throughput

speed boost. All of the PCI Express interface links needed for a PICMG 1.3 compliant backplane are

provided by the PCIe links out of CPU1 and the additional link out of the Intel® 3420 Platform Controller

Hub (PCH). CPU2 on the JXT6966 provides four additional x4 PCI Express 2.0 or 1.1 links to a backplane

via an optional plug-in card called the Chassis Plans PEX10. These extra links provide added bandwidth to

systems equipped with a backplane such as the Chassis Plans BPC7009 or BPC7041. An optional IOB33

module provides an extra x1 PCIe 1.1 link to a backplane equipped with a PCIe expansion slot.