How Much Do You Need?
It's been said that you can never have enough money, and the same
holds true for RAM, especially if you do a lot of graphics-intensive work or gaming. Next to the CPU itself, RAM is the most
important factor in computer performance. If you don't have enough, adding RAM can make more of a difference than getting
a new CPU!
If your system responds slowly or accesses the hard drive constantly, then you need to add more RAM. If you are running
Windows XP, Microsoft recommends 128MB as the minimum RAM requirement. At 64MB, you may experience frequent application problems.
For optimal performance with standard desktop applications, 256MB is recommended. If you are running Windows 95/98, you need
a bare minimum of 32 MB, and your computer will work much better with 64 MB. Windows NT/2000 needs at least 64 MB, and it
will take everything you can throw at it, so you'll probably want 128 MB or more.
Linux works happily on a system with only 4 MB of RAM. If you plan to add X-Windows or do much serious work, however,
you'll probably want 64 MB. Mac OS X systems should have a minimum of 128 MB, or for optimal performance, 512 MB.
The amount of RAM listed for each system above is estimated for normal usage -- accessing the Internet, word processing,
standard home/office applications and light entertainment. If you do computer-aided design (CAD), 3-D modeling/animation or
heavy data processing, or if you are a serious gamer, then you will most likely need more RAM. You may also need more RAM
if your computer acts as a server of some sort (Web pages, database, application, FTP or network).
Another question is how much VRAM you want on your video card. Almost all cards that you can buy today have at least 16
MB of RAM. This is normally enough to operate in a typical office environment. You should probably invest in a 32-MB or better
graphics card if you want to do any of the following:
- Play realistic games
- Capture and edit video
- Create 3-D graphics
- Work in a high-resolution, full-color environment
- Design full-color illustrations
When shopping for video cards, remember that your monitor and computer must be capable of supporting the card you
How to Install RAM
Most of the time, installing
RAM is a very simple and straightforward procedure. The key is to do your research. Here's what you need to know:
- How much RAM you have
- How much RAM you wish to add
- Form factor
- RAM type
- Tools needed
- Where it goes
In the previous section, we discussed how much RAM is needed in most situations. RAM is usually sold in multiples of 16
megabytes: 16, 32, 64, 128, 256, 512, 1024 (which is the same as 1GB). This means that if you currently have a system with
64 MB RAM and you want at least 100 MB RAM total, then you will probably need to add another 64 MB module.
Once you know how much RAM you want, check to see what form factor (card type) you need to buy. You can find this
in the manual that came with your computer, or you can contact the manufacturer. An important thing to realize is that your
options will depend on the design of your computer. Most computers sold today for normal home/office use have DIMM slots.
High-end systems are moving to RIMM technology, which will eventually take over in standard desktop computers as well. Since
DIMM and RIMM slots look a lot alike, be very careful to make sure you know which type your computer uses. Putting the wrong
type of card in a slot can cause damage to your system and ruin the card.
You will also need to know what type of RAM is required. Some computers require very specific types of RAM to operate.
For example, your computer may only work with 60ns-70ns parity EDO RAM. Most computers are not quite that restrictive, but
they do have limitations. For optimal performance, the RAM you add to your computer must also match the existing RAM in speed,
parity and type. The most common type available today is SDRAM.
Additionally, some computers support Dual Channel RAM configuration either as an option or as a requirement. Dual Channel
means that RAM modules are installed in matched pairs, so if there is a 512MB RAM card installed, there is another 512 MB
card installed next to it. When Dual Channel is an optional configuration, installing RAM in matched pairs speeds up the performance
of certain applications. When it's a requirement, as in computers with the Mac G5 chip(s), the computer will not function
properly without matched pairs of RAM chips.
Before you open your computer, check to make sure you won't be voiding the warranty. Some manufacturers seal
the case and request that the customer have an authorized technician install RAM. If you're set to open the case, turn off
and unplug the computer. Ground yourself by using an anti-static pad or wrist strap to discharge any static electricity.
Depending on your computer, you may need a screwdriver or nut-driver to open the case. Many systems sold today come in tool-less
cases that use thumbscrews or a simple latch.