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CEC 1
CPUs
L4 Cache Processor/cache controller Memory controller Memory DIMMs
2 GBps
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| 2 GBps |
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| Port A | PCI bridge |
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| PCI bridge |
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| 66 MHz |
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| 33 MHz |
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| Video |
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| Ultra160 |
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| SCSI |
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| USB |
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| Kbd/Ms |
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| Gigabit |
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| Ethernet |
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| RSA |
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Figure 3-2 x440 block diagram showing the internal PCI-X slots
These slots can accept adapters rated at speeds ranging from 33 MHz to 133 MHz. When deciding which adapters to put in which slots, we recommend you use the Active PCI Manager wizard to help you determine the best slots to use. See 5.1, “Active PCI Manager” on page 130 for details.
You should also consider the following:
Each adapter has a maximum rated speed and each bus also has a maximum rated speed.
Installed adapters in a single bus will operate at the slowest of three speeds:
–The rated speed of adapter 1
–The rated speed of adapter 2 (if the bus the adapter is installed in has two slots)
–The rated speed of the bus
Bus B supports one adapter at up to 133 MHz or two adapters at up to 100 MHz.
Chapter 3. Planning 69