Asus P4SDR-VM - Manual (Page 26)

2-4 Chapter 2: Hardware information
2.4 Central Processing Unit (CPU)
2.4.1 Overview
The motherboard comes with a surface mount 478-pin Zero Insertion
Force (ZIF) socket. The socket is designed for the Intel Pentium 4
Processor in the 478-pin package with 512KB/256KB L2 cache on 0.13
micron process. This processor includes the Intel
® NetBurst™ micro-
architecture that features the hyper-pipelined technology, rapid execution
engine, 100 MHz system bus, and execution trace cache. Together, these
attributes improve system performance by allowing higher core
frequencies, faster execution of integer instructions, and data transfer rate
of 3.2GB/s.
Note in the illustration that the CPU has a gold triangular mark on one
corner. This mark indicates the processor Pin 1 that should match a
specific corner of the CPU socket.
Incorrect installation of the CPU into the socket may bend the pins and
severely damage the CPU!
Gold Mark