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If you have little knowledge on RAM upgrade, like to Add IMAC Memory, you should consult experienced computer service shop that may help customers to avoid any pitfalls when upgrading computer memory. They will make sure that RAM modules that you are purchase are exact match that are originally installed by the factory. This should be a good assurance for any IT manager that sometimes burdened by memory upgrade that are often problematic and costly.

Upgrading memory (also known as RAM) today is one of the most straightforward and most efficient way of to upgrade a computer, several CPU or even the whole LAN network. Doubling the RAM of any computers can often cost less than $100 per machine, delaying the need to replace to the latest computer models for a year or so.

Adding Computer RAM can often lead to trouble if the different kind of RAM or memory module is installed. These problems can become very complex, and become very costly, when buying memory upgrades for the whole offices.

The RAM upgrade should follow an established line, for example you may want to upgrade to DDR PC2700 Memory if you currently have DDR PC2100 Memory. However, if you prefer to choose DDR2 memory, that means you have chosen a different generation of RAM, which necessitate the change of mainboard or even new processor, if your old processor cannot be installed to your new mainboard.

In addition to all the regular equipment, you will need to consider the 5 following questions when choosing a laptop:

• Weight. Almost all laptops sold today, fall within the range of 4 to 7 pounds. The laptops with more weight have more features. The lightest models may have fewer features or simply less advanced features, but they are generally more expensive. You pay more on light laptop, but curiously you pay more for a heavier one too, if they have additional features.
• Dimension. Most laptops are less than 1 inch thick and about as big and wide as a small coffee table book. They could get smaller than this, but there is a limit based on the size of the keyboard and screen size.
• Display. Recently, manufacturers have discovered that people love larger LCD displays on a laptop - despite the fact that larger display add to laptop size and weight. For a laptop used at a desk and only rarely being on travel, a large screen is beautiful. But if you want portability, and longer battery life, consider a smaller screen.
• The battery life. Despite claims on the brochure, most laptops last two to three hours unplugged. They had even less if you do a lot with the laptop, which means lots of disk access and networking and projects that require numerous amounts of electricity.
• Battery type. There are many types of batteries, but what you want in your laptop battery is a lithium-ion. You do not want a nickel-cadmium or NiCad “battery. The lithium-ion batteries can be recharged at any time and do not have the” memory ” of NiCad problem. They have a maturity of more and keep a more powerful charge longer.

Many times we consider in purchasing memory upgrade to speed up our computer. If you are a long time Microsoft Windows user, you should be aware that these operating systems love a lot of memory.

The lack of memory is noticeable with sluggish performance. This is especially true, when you are using an older computer and then installing a new software or game that may have steeper hardware requirement than usual.

How much RAM that is really needed? Well, it really depends on your needs. One basic method is to

• Load all softwares that you usually use, concurrently, like an internet browser and a graphic editing software.
• Work with your computer for an hour or so, just as usual.
• In Windows XP, press Ctrl-Alt-Del and in task manager pop-up windows, select Performance tab.
• Look down into Commit Charge (k) section and read the amount of memory peak

The amount of memory peak can be roughly used as an indication how much memory that you need in your daily use of your computer. Add another 128 or 256 Mb and you have enough memory to optimize the speed of your PC
I have seen a couple of very slow computer that come alive with just adding 256 Mb of RAM, but with really affordable memory price today, it is logical to buy 1 Gb RAM upgrade to give you plenty of space when you buy newer softwares and games in the next few months. But, you should be aware that excessive RAM upgrade might be just a complete waste of money. When you use your PC lightly and your RAM requirement never exceed 1 Gb, an upgrade to 4GB Memory Upgrade or even 8 Gb memory upgrades would be useless. It is like building 4 or 8 rooms in your home, when you only need one room. The extra cash should be used to buy faster processor instead.
How about using the new Windows Vista? If you are using the sleek Aero user interface, large memory size is not the only requirement, a fast and direct-X 10 capable VGA card is good to have. Some PC user had make a large memory upgrade and then find that there is only a tiny improvement in speed. I suggest that you buy 2 Gb memory Upgrade when using Vista, as the OS requires close to 1 Gb of RAM itself.