Hardware Reference
In-Depth Information
Installing the CPU and Heatsink
Before you install your new motherboard, you should install the processor and memory.
Thisusuallyismucheasiertodobeforetheboardisinstalledinthechassis.Somemother-
boards have jumpers that control both the CPU speed and the voltage supplied to it. If
these are set incorrectly, the system might not operate, might operate erratically, or might
even damage the CPU. Modern boards control voltages either automatically or via the
BIOSsetup program.Ifyouhavequestions aboutthepropersettings, check theboardand
processor documentation.
See
“
CPU Operating Voltages
,”
p.
83
(
Chapter 3
)
.
All processors today run hot enough to require some form of heatsink to dissipate heat
from the processor. To install the processor and heatsink, use the following procedure:
1.
Prep the motherboard. Take the new motherboard out of the antistatic bag it was sup-
plied in and set it on the bag or the antistatic mat, if you have one.
2.
Install the processor. First, find pin 1 on the processor; it usually is denoted by a
corner of the chip that is marked by a dot or bevel. Next, remove the cover from the
processorsocket(ifsoequipped-see
Figures19.4
and
19.5
)
andfindthecorrespond-
ing pin 1 (or land 1) of the socket for the CPU on the motherboard (see
Figures 19.5
and
19.6
); it also is usually marked on the board or with a bevel in one corner of the
socket.Besurethepinsontheprocessororsocketarestraightandnotbent;iftheyare
bent,thechipwon'tinsertproperlyintothesocket.Ifnecessary,usesmallneedle-nose
pliersorahemostattocarefullystraightenanypins.Don'tbendthemtoomuch—they
mightbreakoff,ruiningthechiporthemotherboard.InserttheCPUintothesocketby
