Tech Guide: Notebook buying
We cover every aspect you need to consider in making a notebook purchase in our extensive tech guide.
Notebook specs vary widely depending on what you need to get out of
your portable computer. Manufacturers make trade-offs--slower processors allow
for smaller batteries, for instance--so it's important to know what you'll have
to sacrifice to get the notebook of your dreams. Many vendors offer
configuration choices when you buy your notebook. We've broken out the most
important specs so that you understand your choices.
Options:
Processor | Memory | Display
size
What are my processor, screen, and memory options?
Processor
Sometimes
referred to as the
CPU, or central processing unit, the processor is the
brains of the computer. It's the most important chip in a notebook, and it has
power-management features that extend battery life. Notebooks use a variety of
processor types depending on their focus. We've explained each in the chart
below:
|
PROCESSOR |
NOTEBOOK TYPE |
PROS AND CONS |
| Mobile AMD Athlon
4 |
Budget notebooks |
Inexpensive but a bit slower than Intel
Pentium chips, according to CNET Labs' tests. |
| AMD Althon XP-M
chips |
Desktop replacement, thin-and-light
notebooks |
Still undergoing tests. No conclusion
yet. |
| Apple PowerPC
G3 |
Apple iBook (budget
notebook) |
Long battery life and relatively inexpensive,
but slower clock speeds limit performance, especially under OS
X. |
| Apple PowerPC
G4 |
Apple PowerBooks (performance and
desktop-replacement notebooks) |
Excellent performance and reasonable battery
life but expensive, and clock speeds top out at 1GHz. |
| Mobile Intel
Celeron |
Budget notebooks |
Extremely inexpensive, slightly slower than
Intel Pentium chips. |
| Mobile Intel Pentium
III-M |
Ultraportable notebooks |
Less expensive than many other processors but
not as powerful. Longer battery life allows for lower system
weight. |
| Mobile Intel Pentium
4-M |
Desktop-replacement, thin-and-light
notebooks |
Very fast and expensive. Allows for only
mediocre battery life. |
| Intel Pentium
M |
Desktop-replacement, thin-and-light, some
ultraportable notebooks |
Part of Intel's Centrino technology, the PM
is both very fast and allows for long battery life. Very
expensive. |
| Intel Pentium
4 |
Desktop-replacement
notebooks |
A chip intended for desktops, the Intel P4 is
very fast and is less expensive than Pentium 4-M and PM chips, but it runs very
hot and allows only poor battery life. |
| Transmeta
Crusoe |
Ultraportable notebooks |
Long battery life but very
slow. |
Memory
Every
computer comes with a certain amount of physical memory, usually referred to as
main memory or
RAM (random-access memory). Computers store
currently running applications and data in this area. To find out how much
memory you'll need, take into account your operating system and the applications
that you plan to use. A general rule of thumb: You'll need 256MB for Windows XP
or Mac OS X and 128MB for all other Windows and Mac operating systems.
If you're planning to hang on to your notebook for a long time, look for
a laptop with easy-to-access memory slots, as memory is typically one of the
first specs you'll want to upgrade.
Display size
Unlike
traditional desktop CRT (cathode-ray tube) monitors, notebooks ship with thin,
liquid-crystal displays (LCDs). Notebook LCDs range in size from 12.1 inches
(diagonal) to 17 inches. For comfortable viewing at the preferred Windows
resolution of 1,024x768, most people like 14.1-inch or larger LCDs.
 |
 |
| The ultraportable Fujitsu LifeBook P
series (left) has one of the smallest screens--just 10.6 inches--in order to
accommodate its feather-light, 3.1-pound weight. The giant 17-inch Apple
PowerBook (right), on the other hand, has the biggest notebook screen we've ever
seen. |
Notebook LCDs once varied
widely in brightness, colour, and sharpness, but today, you'll find much better
quality across the board. Unfortunately, when it comes to LCDs, the specs reveal
little about actual picture quality, so if you're picky about screens, compare
some at your local dealer.
Graphics card capability also is important to a desktop replacement notebook. Also neat little features, like the location of the microphone away from internal sound sources (ideally two one at each top corner of the display, haven't seen it yet) manual off switch on all wireless connections, hardware firewall chip for all external network connections, intergrated numeric keypad on 17" models. The most important thing of course is an effective stand to get the notebook off your lap when relaxing in a rocker recliner and doing some power computing (games ÷Þ).