Sun Microsystems, Inc.
Figure 1-3: Internal View of the Sun Fire X4600 Server
The Sun Fire X4600/X4600 M2 server also provides the following system architecture features:
• Sun Fire X4600: Embedded dual-channel DDR1 memory controllers on each CPU to provide maximum
memory capacity and bandwidth scaling and deliver up to 64 GB of capacity and 51.2 GB/sec. of
aggregated bandwidth with eight populated CPUs and 2 GB DIMMs.
• Sun Fire X4600 M2: Embedded dual-channel DDR2 memory controllers on each CPU to provide maximum
memory capacity and bandwidth scaling and deliver up to 256 GB of capacity and up to 85.6 GB/sec. of
aggregated bandwidth with eight populated CPUs and 4 GB DIMMs.
• AMD Direct Connect Architecture that directly connects CPU-to-CPU with Coherent HyperTransport
TM
links
to deliver 8 GB/sec. aggregate bandwidth per link, CPU-to-I/O with non-Coherent HyperTransport links to
deliver 8 GB/sec. aggregate bandwidth per link, CPU-to-memory using the integrated DDR controller, and
CPU cores to each other on the same die in dual-core processors
• Two PCI-X and six PCI-E slots to deliver high-performance I/O with over 160 GB/sec. of I/O plug-in
bandwidth
• Embedded quad Gigabit Ethernet and a SAS disk controller to leave the two PCI available for expansion
needs
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