CPU Guide - Detailed Information About the CPU of a Computer
CPU - Central Processing Unit
The brain of the computer. A lot of people like to call the entire
case the CPU, but actually, the CPU is a tiny chip connected directly to the
motherboard, with a big fan connected directly to it. Without the fan, the CPU
would burn up very quickly.
There are two primary brands of CPU on the market right now, Intel & AMD. A
better of the two is hard to state, but you can check Toms Hardware for more in
depth hardware reviews.
One thing to note about CPU's is that you can't just slap any CPU into any
Motherboard. The Motherboard must support your specific CPU, which can make
upgrades very hairy, so typically, if you're going to upgrade one, it's a good
idea to upgrade the other. See more on Motherboards on the Motherboard page.
There are also two different types of CPU's, socket and slot. Socket snaps
directly into the motherboard, with a fan directly attached, while slot has a
casing which holds the CPU, with a fan connected to the casing. Again, there
really is no better of the two, but Socket is becoming more common, and is
generally easier to keep cool, which is a BIG factor in CPU's at higher speeds.
CPU speeds are rated in Megahertz (Mhz), up to 1000, then they are referred
to as Gigahertz (Ghz). One major misconception regarding CPU's is that the
bigger the number (the megahertz/gigahertz), the faster the CPU. While this is
generally true, there are several other factors that effect the overall speed of
Front Side Bus - Regulates the speed of communication
between the Ram and the CPU
Onboard Cache - Comparable to Ram, except used strictly by
the CPU to speed up calculations
So the next time you're shopping for CPU's, remember to not only look at the
CPU speed, but check out the other factors most people don't generally notice.
When buying a CPU, it's very important to know what you need it for. Most basic
users only need internet and some word processing and basic picture editing.
Using Windows XP (since it's the most common home Operating System right now)
2.0 Ghz should be your minimum. This speed is just right for these basic
functions, and should be fast enough to last a while, and most of all, it is
One thing to note here is that the price difference between the 2.0 Ghz and
the upper 2.x Ghz CPU's (like 2.6 or 2.9) is so slight that you might be better
off to get the one slightly higher to last longer over time.
I do NOT suggest buying the fastest cpu on the market,
ever.. simply because what you pay six hundred dollars or more for now, will be
only a few hundred dollars in a couple of months, and this will always be true
as long as cpu speeds keep increasing.
Donny Duncan, the author of Computer
Discounts Guide has been in the computer field for over thirteen years.