The term computer memory refers to the parts of a digital computer which retain physical state (data) for some interval of time.
In its most common usage, "computer memory" refers to very fast storage which does not retain its stored data when the power is turned off. Compare this to "storage", such as hard drive space, which is slow but keeps its data even without power. An analogy is to think of the storage as human memory, with the hard disk computer memory as long-term memory, and the computer memory as short-term memory.
* Random access computer memory, or RAM, which is used to temporarily store things such as programs and data while the computer is using them. Since RAM computer memory can be accessed at very high speeds, it is well suited for this task.
* Cache computer memory is a small amount of very high speed dedicated computer memory. Cache computer memory is used to allow quicker access to data which ordinarily is slow to retrieve. Because of cache computer memory's high speed nature, storing data into cache computer memory before it is actually accessed can allow quicker response times. Cache computer memory is often found in microprocessors and hard drives among many others.
This article is licensed under the GNU Free Documentation License
. It uses material from the Wikipedia article "Memory (computers)"
What is computer memory?
The definition of computer memory
Computer memory is used to save bytes of data and programs either temporarily
(computer memory type: RAM) or permanently(computer memory type: ROM) or cache
data within an electronic computer. A computer memory stores and interprets
data in binary
format which is a series of 1s and 0s.
The computery type of memory,
RAM usually known simply as "memory" is
an acronym for the word Random Access Memory which of course is the computer
memory we discussed above.
People sometimes confuse "computer memory" with the Hard Disk which
is not a computer memory in the save way because it can save much more data
than computer memory, but computer memory is supposably faster.
The amount of computer
memory in the computer is very important because it established how many programs
can be running simultaneously, and how much computer memory is available for
each program. Computer memory is generally available as gigabytes or GB. A
a basic amount of computer memory (512MB), Windows XP, and an Internet browser
will perform very slow because of its computer memory. While a computer with
2GB or more of computer memory will perform much faster.
Let's make a simple distinction of RAM vs. Hard Disk.
RAM computer memorydoesn't preserve information when the computer is
turned off. Where as, the Hard Disk does retain information when the power
to your personal computer is turned off.
Today's computer memory implements the use of integrated circuits that have
transistors made from silicon. The two main types of memory at the very top
level are volatile and non volatile memory.
An emachines memory card
How to install an emachines memory card
There are two essential sorts of memory card that can be installed in an eMachines
computer. The first is an external memory card, which may take several diverse
forms. These memory cards are used as extra storage devices, and are most frequently
used for tasks like transferring multimedia like pictures from digital cameras
onto a computer's hard drive. The second category of memory card is an internal
usually used to upgrade your system's RAM. Whether you're upgrading your eMachine's
RAM or just transferring data, knowing how to install the memory card is the
1.Shut down your eMachines computer and remove the power cable.
2.Detach the thumb screws and slide the cover from the emachines computer.
Depending on you model, there may be one or two screws to detach. If they are
to be removed by hand, they can be detached with a Phillips-head screwdriver.
3.Insert your internal emachines memory card into the fitting slot. The slots
for memory are normally positioned behind the processor, and will in most cases
be black. There will also be clips on either side of the slot that will snap
the card is fully inserted.
Restore the cover to its original place and secure again the thumb screws.
Computer Memory Upgrade
Frequently Asked Questions about Computer Memory Upgrade
How to upgrade your computer memory ?
Purchase the right memory for your computer memory upgrade.
First of all we need to know that computer memory varies in many ways. Most
computers nowadays use DDR2 or DDR3 types of memory as their main computer
Memory). Firstly you have to find a computer memory chip which is compatible
for your motherboard. But even then among compatible memory chips, there
are a number of manufacturer's from
RAM that's compatible with your computer, it's important to choose top quality
RAM. Many computer problems are a result of the use of bad quality RAM. For
top quality RAM without paying extra the place to go is Corsair, Crucial
Crucial memory comes with a lifetime guarantee and ships free.
And they take the uncertainty out of knowing which RAM is right for your
with their handy RAM advisor. Start by selecting your computer make (such
as Compaq computers, Dell computers, Gateway computers, etc) or motherboard
(such as ABit, ASUS, EPoX, MSI, etc.), clicking Go and then follow the selections
to find the RAM compatible for your computer memory upgrade! The page listing
the compatible memory modules will also show the maximum amount of memory
your particular brand and model of computer supports.
Do You Need a Memory Upgrade?
How often should you upgrade your memory ?
When your computer is running slow,getting freezes or crashes, you could
fix all that with a proper a memory upgrade. Operating systems, software
keep getting bigger and more demanding each year, which can slow down many
of the top of the line computers. If a virus scan shows that your computer
is clean and
having performance problems, it's time to get some more RAM.
PC RAM plugs into a DIMM slot inside your desktop and connects using 168-pin,
184-pin or 240-pin slots. You'll need to know which type of memory connector
you have on your motherboard, as this will limit your choices. The goal is
to get as much RAM as
possible into the available slots.
Desktop Memory Upgrades
Desktop computer memory is available in three varieties: SDRAM and DDR RAM
and RD RAM. Although SDRAM was the standard a few years ago, it's now the
of PC memory available. DDR SDRAM is faster than SDRAM, making it a popular
choice for memory upgrades.
How much computer memory should I have?
A proper answer whould be as much as your computer will
hold. Although the computer may function with 512MB of RAM or even less,
nowadays 1024MB is a reasonable minimum. Especially computers
Windows XP and Windows Vista should have at least this much, but you should
see a performance improvement with 2048MB of RAM. It's fully acceptable
to have more than 2048MB , especially if you are using Windows Seven.
You should also know that when you use more than 3048MB of RAM then you can
use 64-bit operating systems which can overall improve your computer performance.
What's the cost-performance consideration when it comes to computer memory?
It's safe and easy to
say you should get the fastest memory your motherboard supports (see MHz
speed) and you should also have as much memory as your computer or motherboard
supports. RAM is a botteneck that imprisons overall system performance. It's
the speed of the
RAM that counts, but more important its about the quantity of RAM (computer
memory) and sometimes a well-known vendor can make a difference. In plain
terms, one type of memory may be 33% faster than
system performance you actually observe without severe computer memory testing
will more likely be in the range of 5% to 10% if are good enough to notice
What is SDRAM, DDR, DDR2 and DDR3? These terms mentioned are types
of RAM. SDRAM was manufactured first, so of course it is the slowest of
these memory types, followed over time
and then DDR3, with each providing greater memory speeds, at least theoritically.
A computer cannot use two different memory types simultaneously. In most
cases the newer the motherboard, the better the memory chip, again theoritically
Laptop DDR Computer Memory
Reasons to Upgrade laptop computer memory
I don’t know about you, but I always seem to
be pushing the envelop with what my laptop can do. I used to get frustrated
and just go out and buy another laptop and give my old one to one of my kids.
I spent a ton of money this way–that is until I learned that a notebook
memory upgrade was a whole lot less expensive than a new laptop.
A good laptop
ddr memory upgrade will definately increase the overall stability and performance
of your laptop. If your RAM is not sufficient it could mean that your
computer is spending a lot of its time moving chucks of files back and forth
your hard disk. A laptop memory upgrade will solve this problem,
by giving the laptop
essentially a more convenient space to work on.
More accurately, here are
a few great things a laptop memory upgrade can do for your laptop.
A laptop memory upgrade will drastically improve
your computer’s performance.
You’ll see this not only in speed (which will be at least
15% better), but also in the number of programs your computer can run simultaneously.
If you replace or add a memory module that is faster , you’ll increase the
general speed and stability of your laptop, too.
If you add more memory on your computer or laptop then you automatically open
the room for new hardware or software upgrades that would interest you in the
Most laptops nowadays face a problem with memory and if you are a gamers you
will need plently of memory. Games are always great and fun
to play, especially if it's a game you couldn't before
memory upgrade, you’ll take care
issue once and for all.
Do you like multimedia and file editing? Your computer has to be able to move
a lot of data and files around effortlessly and quickly for this to work as
expected. And that's another good reason
for the memory upgrade for your laptop.
Finally, your increased memory will make surfing the Internet even better!
let's say that you’re convinced about the laptop memory upgrade…the
question now is, what's so good about the DDR memory upgrade?
read by computers per each cycle of the computer’s clock. What’s
great about DDR, or double data rate, is that it reads the memory not once
per cycle, but twice. This fact instantly makes those memory types twice
as fast as
single data rate memory types.
Laptop Memory Upgrades Do you really need This?
DDR3 Laptop memory
is now the state of the art. And if you’re interested in upgrading, this
is usually the way folks go–buy more memory. But is this the thing to do?
And do you really need to upgrade your laptop's memory ? Let’s take a look
at this question, so you can see if DDR3 memory upgrades are something you
just a waste of time and money.
Why would you consider upgrading your laptop memory ?
You can see
if your laptop wants more memory by inspecting the following symptoms. Slugginess,
or it inclines on locking up when there are a lot
of windows open. If your computer is slow and unresponsive, then this could
easily be soothed by laptop memory upgrades, such as adding a new 1GB memory
chip module. Your computer essentially has two memories, so to speak, the
RAM and the internal main hard drive. The RAM is where it puts data and programs
using currently. If the RAM is too small, then your computer will be spending
a lot of its
resources moving bits and pieces of files to and from the hard drive.
for a computer that doesn’t perform well when there are a lot of windows
open. This is usually caused by the same problem, lack of enough memory.
And has the same solution ddr memory upgrades.
So, how much memory do you
need anyway? Well, it used to be that you only needed about 128Mb of RAM
just for basic functions, say 256 Mb for something
like word processing. If you’re on the internet for any period of time, you’re
probably looking at at least 512 Mb of RAM. Notice I said used to be–as in
two years ago. Now, I don’t care who you are you’re probably doing a lot
of teleconferencing, audio and video streaming, and other high data jobs
with your computer. Personally, for this 1Gb, which is what most notebooks
and laptops currently come with is not enough. I like 2 Gb. That seems to
make my computer and all its applications run smoothly.
So, memory upgrades
are definitely mandatory and essential if you are into computers or laptops.