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52 007-4653-001
3: Cx-brick
Overview
The Cx-brick is a new brick type for the SGI Origin 3000 series product line; it is
equivalent to four Origin 3000 series C-bricks and one R-brick in one 4U-high enclosure
(see Figure 3-1).
The hardware that is equivalent to four C-bricks is contained on four IP53 node boards;
one IP53 node board is equal to one C-brick. The Cx-brick supports the following two
types of IP53 node boards:
• Four-processor node board that has 8 MB of L2 cache per processor and up to 8
DIMMs.
• Zero-processor node board that has up to 8 DIMMs (no L2 cache).
The hardware that is equivalent to the R-brick is contained on a single printed circuit
board (PCB). The key component on this PCB is the router ASIC, which is the same ASIC
used in the R-brick. This router ASIC enables the internal IP53 node boards to connect to
other Cx-bricks via the NUMAlink 3 interconnect. This PCB also transfers I/O and
system control signals between I/O devices and the IP53 node boards via XIO ports.
Figure 3-1 Front and Rear Views of Cx-brick
Front view
Rear view