HP 520 5/XX, 525 5/XX Level-1 Cache Memory, Level-2 Cache Memory, Pentium Processor D4051-63001

2System Board - (SiS Chipset) (Part Number: D4051-63001) Devices on the Processor Local Bus (D4051-63001)

Level-1 Cache Memory

The L1 cache memory is divided into two separate banks:

•L1 I-cache for instruction words.

•L1 D-cache for data words.

For more information about Level-1 cache, refer to “Instruction and Data Cache” on page 46.

Level-2 Cache Memory

The L2 cache memory, when installed, has a 32-byte line size. It is controlled by the Host Bridge chip (SiS 5511) in the system board chipset. A single HP cache memory module consists of 256 KB of direct mapped, synchronous, static random access memory (SRAM).

Pentium Processor (D4051-63001)

The Pentium processor uses 64-bit architecture and is 100% compatible with Intel’s family of x86 processors. All application software that has been written for Intel386 and Intel486 processors can run on the Pentium without modification. The Pentium processor contains all the features of the Intel486 processor, with the following added features which enhance performance:

•Superscalar Architecture

•Floating Point Unit

•Dynamic Branch Prediction

•Instruction and Data cache

•Data Integrity

•Supports MultiProcessor Specification (MPS) 1.1

•PCI bus architecture

•Advanced Power Management capability for reducing power consumption The processor is seated in a Zero Insertion Force (ZIF) socket.

45