Sun Microsystems X4600, X4600 M2 - page 16

Sun Microsystems, Inc.
Front of Server
Rear of Server
Figure 2-2: CPU Module Placement
Note: The Sun Fire X4600 server supports four and eight CPU configurations. Two, four, six, and eight CPU configurations
are supported in the Sun Fire X4600 M2.
In Sun Fire X4600 systems, each processor contains an integrated memory controller that supports a 128-bit-
wide path to memory and three 16x16-bit HyperTransport links. Each HyperTransport link runs at speeds up to
1 GHz and is clocked on both edges of the clock pulse, which allows for a maximum of 4 GB/sec. (2
gigatransfers/sec., 2 bytes wide) throughput in each direction (8 GB/sec. aggregate data rate bi-directionally).
Memory support is for registered DDR400 184-pin SDRAM DIMMs. There are four DIMM slots per CPU.
DIMMS are accessed in pairs with an available memory bandwidth up to 6.4 GB/sec. (with PC3200) per
processor.
Figure 2-3: 8-DIMM Processor Board
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