HP Workstation x2000 hp workstation x2000 - Technical Reference and Troublesho - Page 73

Cache Memory

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System Board System Bus Voltage Regulation Module (VRM) One VRM is integrated on the system board, complying with VRM specification 9.0. The system supports high-current and low-voltage processors. The processor requires a dedicated power voltage to supply the CPU core and Level 2 cache. The processor codes through Voltage Identification (VID) pins with a required voltage level of 1.30V to 2.05V. The VID set is decoded by the VRM on the system board that in return supplies the required power voltage to the processor. Note, however, that voltage may vary from one processor model to another. Cache Memory The Pentium IV integrates the following cache memories on the same die as the processor cache: • A trace instruction and Level 1 data cache. The trace cache is 4-way set associative. • A 256KB Level 2 cache. The Level 2 cache is 8-way associative. Intel sets the amount of cache memory at the time of manufacture. You can't change the value. Chapter 2 73

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System Board
System Bus
Chapter 2
73
Voltage Regulation Module (VRM)
One VRM is integrated on the system board, complying with VRM
specification 9.0. The system supports high-current and low-voltage
processors.
The processor requires a dedicated power voltage to supply the CPU core
and Level 2 cache. The processor codes through Voltage Identification
(VID) pins with a required voltage level of 1.30V to 2.05V. The VID set is
decoded by the VRM on the system board that in return supplies the
required power voltage to the processor. Note, however, that voltage may
vary from one processor model to another.
Cache Memory
The Pentium IV integrates the following cache memories on the same die
as the processor cache:
•
A trace instruction and Level 1 data cache. The trace cache is 4-way
set associative.
•
A 256KB Level 2 cache. The Level 2 cache is 8-way associative.
Intel sets the amount of cache memory at the time of manufacture. You
can’t change the value.