HP Vectra XU5 Reference Manual page 17

Processor
The Pentium processor uses 64-bit architecture and is 100% compatible with Intel's family of
x86 microprocessors. All application software that has been written for Intel 386 and
Intel 486 microprocessors can run on the Pentium without any modification. It contains all
the features of the Intel 486 microprocessor, with the following features added to enhance
performance:
Superscaler Architecture
Floating Point Unit
Dynamic Branch Prediction
Instruction and Data cache
Data Integrity
Supports MultiProcessor Specification (MPS) 1.1
PCI Bus Architecture.
The microprocessor is seated in a Zero Insertion Force (ZIF) socket.
Vectra XU Technical Reference System Overview 17