Used Computers (Desktops/Laptops) – What To Look For?

By: Christophe Catesson

Nowadays desktops and laptops are much more durable and dependable that they were just five years ago. Therefore, buying a used or refurbished computer is becoming more of a trend.

Suppliers replace their computers on average every 6 months and companies frequently upgrade their equipment. Buying one of these used or refurbished computers can save you a lot of money while still using a quite up to date technology. This is even more relevant if you are not a heavy user (i.e. most of your time on a computer is spent online, you may use a few standard applications once in a while). Even modestly priced computers will more than suffice for these types of demand.

Thinking about buying a used or refurbished desktop or laptop?

Buying a computer is not at all an easy job, one has look get detailed information of the available computers of good and reputed brands. One must take into consideration the size, color, configurations, features etc… While your computer should correspond to your personality and lifestyle, you should always keep in mind the reputation of the brand in the market. Brand counts a lot; you can render good service by the manufacturer if your computer is damaged.

Important handy Tips before buying a computer...

* Verify if the brand is reputed and always buy a good reputed brand. Read about customer service experience for that specific computer issues
* Check the warranty/guarantee of the computer (seek out computers which still have warranty/guarantee remaining)
* Compare the price of the new model in the market with what price your buying your used computer, try to get the best bargain. i.e. a two year old computer should not be bought for more than half of its original price.
* Check if the computer is outdated (if out of production it is difficult to get spare parts)
* Is the operating system current (Windows Vista/Windows Xp). Earlier versions probably run slower (windows 2000) and would not be advisable unless your needs are limited (i.e. web surfing, Word...). In any event, stay away with computers running on Windows 98 (granted you don't find many anymore). Also be aware of Windows Vista. Many users are reverting back to XP and that is even more obvious in the corporate world. Why? Vista looks nice but doesn't bring many technical improvements; therefore IT managers are not willing to implement something new when what they have works just fine. Some domestic users just don't like the new way of navigation within the Vista Operating System.
* Check if the configuration of the computer you are buying is good.
* Check the speed of the processor. If possible start the computer and see how long it takes to fully turn on. If its slow just turning on, imagine the lack of speed once you start adding software..

Additional Tips for laptops

* Is the battery life good? (search for the computers with a very good battery backup (2 hours minimum).
* Check for the screen size of the computer your buying and see to it that it is not exceeding the Normal (normally the screen size should be between 15-17). Less than that generally translates in older computers and increases the chance of age failure. Once the screen breaks, you are often better of changing the whole computer.
* Review the connectivity of the computer (Network, USB, Video, Audio…) look to it that it has a good connectivity including wireless
* Check out the weight. Ensure the computer is light enough for you to carry (light 7pounds)

Where to buy used computers:

* Online auctions. Pro: Often offer the best prices. Cons: Cannot validate the accuracy of the described item. No warranty. Tip 1: Some companies will offer warranty for up to two years, the cost is about 12 of the purchase price. Tip2: Buy from sellers with great feedback, do not hesitate to contact the seller with questions prior to bidding
* Online marketplaces: Pro: Set prices and quantities - Sometime warranty is available. Cons: Prices can vary a lot, do your homework
* Craiglist.com Contacting sellers on Craiglist.com in your local area gives you a chance to meet with the owner and physically test the computer before the purchase

Where to buy refurbished computers:

Refurbished computers can be a great way to buy as they have warranties and are generally sold by manufacturers or companies affiliated with them.

* Manufacturers websites will tell you how to buy directly from them or from their authorized sellers. Pros: Warranty, established companies. Cons: Prices are higher than regular auctions (you pay more for peace of mind)

Buying a used or refurbished computer can be a great way to save money. If you use some of the advice discussed above you can avoid many pitfalls. One last thing concerning laptops, make sure you have a good bag to protect your computer from a fatal accident. Your bag should be big enough for a 17 inch screen computer as it is rapidly becoming the norm, you will probably change your computer within a few years, the bag you may keep a lot longer.

Good Buy!

About The Author Christophe Catesson - Communication Manager for http://www.bestlaptopsreviews.com. A source of unbiased information on laptops/notebooks. Supporting companies and individuals with their computer purchasing, deployment, maintenance, upgrade...

Laptop Buying Guide

Story by Bigshop

A laptop is the ideal replacement for your desktop computer. The greatest advantage of a laptop is its portability. Unlike desktop computers, you can easily move a laptop around your home, carry it to work or class and take it with you when you travel. Laptops are a big investment, so before buying one, you should consider many factors like the manufacturer, performance and features.

What kind of laptop user are you?

A home user wants all the features of a desktop PC in the form of a notebook. If you are a home user, then choose a notebook which is easy to carry and comes with the most basic computer applications. Students should opt for an affordable laptop which is light and durable. Frequent fliers need slim notebook models with long-lasting batteries. A business user should purchase a laptop with plenty of hard disk space and advanced security features while a gamer needs a fast processor and the latest graphics card.

What are the different kinds of laptop computers available?

Laptops for Entertainment:

Multimedia laptops are always more expensive and heavier than your standard model. These laptops come with a powerful processor, abundant memory and a large hard drive. You can use these laptops as a mobile DVD player, MP3 jukebox and a digital photo album. If you buy a TV tuner card, you can even use your multimedia notebook as a television set. These notebooks are ideal for PC gaming.

Laptops for Business:

Laptops especially designed for business use are ultra portable. These laptops are durable and more secure than the basic laptop. They are best suited for consumers who are always on the move. A good business laptop should offer a fingerprint reader or SmartCard support to prevent data theft. These notebooks usually have advanced computer applications and wireless capabilities, so you can work even when you are away from your desk.

Laptops for Home:

The home user typically uses a laptop for checking mail and browsing the web. These laptops perform general tasks. A high speed processor is an unnecessary luxury and tends to be wasted on most home users. Opt for a notebook with at least a 14-inch screen and a comfortable keyboard. These laptops are generally heavy, weighing more than 4 kg at times. Their average battery life is less than three hours.

What constitutes a good laptop?

Ergonomics:

If you are going to use your laptop extensively, then you need to be comfortable with the keys. Try a laptop with slightly larger keys to avoid straining your fingers from typing. Most laptops come with a touch pad or a tracking pointer instead of a mouse. If you are a PC gamer, buy a separate mouse which can keep up with the fast-paced action on screen.

Operating Systems:

The Windows XP Media Center Edition is a good operating system for entertainment laptops. It makes optimal use of multimedia features like TV tuners, radio tuners and media players. If you are a professional who prefers Apple notebooks but are concerned about compatibility, check out the dual boot models by Apple that allow you to install and run Windows as well as Mac OS X. If you prefer PCs, Microsoft Vista is an ideal alternative to Windows XP. Vista comes in several editions, including Vista Home Basic and Vista Home Premium for the home user, Vista Business for the professional and Vista Ultimate for the best of both worlds.

Memory and Storage:

All data and applications are stored in the RAM (random access memory). Many laptops commonly use 256 MB of RAM. Most business laptops and entertainment laptops come with 512 MB or more of RAM. The more RAM you buy, the more data you can store.

The hard drive stores all programs and files. For the average home user, a 20 GB hard drive will more than suffice. If you buy a laptop for entertainment or business purposes, a 60 GB hard drive will better serve your needs. Some entertainment laptops even have multiple hard drives for better performance. Hard drives come with different speeds. Most laptop hard drives have a speed of 5,400 rpm. However, faster hard drives go up to 7,200 rpm.

Display:

The size of a laptop is based on the size of the screen. Screen size starts as small as 10.6 inches and goes up to 20 inches diagonally. Most laptops have an LCD monitor. However, if you are using your laptop for CAD, a CRT monitor will serve you just as well, if not better. The screen resolution determines the crispness of your image. A 12.1 inch display uses WXGA resolutions (1,280 by 800). A 14 or 15 inch display typically uses WSXGA+ (1680 by 1,050), although a small number of notebook computers use WUXGA (1,920 by 1,200) instead.

Processor:

It is more difficult to upgrade a notebooks processor than it is to upgrade a desktop computer. For this reason, you should buy a processor with a speed that will best suit your use. Also, it is wise to choose a processor with less battery consumption. Processors with 1.4 to 1.6 Ghz are preferred by most users.

Battery:

Lithium ion batteries are commonly used in laptops. The average battery life is about 3 hours. It takes around 75 minutes to fully recharge a lithium ion battery.

Graphics Card:

A graphics card, sometimes referred to as a video adapter, is responsible for generating the images you see on a laptops display. For businessmen who need to do lot of presentations, a graphics card containing 32 or 64 MB of dedicated memory is the right choice. There are also specially designed cards for gaming. These cards are expensive and should be avoided unless you require excellent graphics.

USB Ports:

Laptop computers come with at least one USB port so that you can connect peripherals to the notebook. Recent models have a FireWire connection that lets you transfer digital information from camcorders or MP3 players.

Optical Drives:

Most laptops come with either a CD-ROM (compact disc, read-only memory), a CD-RW (compact disc, re-writeable) or a DVD-ROM (digital versatile disc, read-only-memory). The DVD+RW/+R with CD-RW is a combination drive which will read a CD or a DVD and write data to a DVD as well.

Modem:

Laptops are available with integrated modems for dial-up connections, Ethernet ports for cable internet and DSL and wireless modems for Wi-Fi connections. Many business laptops also have a cellular wireless modem so you can browse at broadband speeds with just a mobile phone signal.

About the Author

Bob Shanty has been researching and writing articles that help shoppers make more
educated buying decisions on laptops and notebooks for online shopping
mega store BIGshop for years. For more articles by Bob please visit http://www.bigshop.com.au.

Source: ArticleTrader.com

Laptops Are Becoming Increasingly More Popular. But Why?

by: Robert Michael

In the Lap of Luxury

Laptops are becoming increasingly more popular, and have evolved so much that some business people and individuals are using them as their only computer. The reasons laptops are popular is that they are portable, they use far less power than desktop computers, and they make less noise. The disadvantages of laptops, however, are that they are usually slower than desktop models, have fewer graphics, and their power to process sound is not as robust. As laptops are upgraded, however, many of these differences are not substantial enough to even be noticeable to the average computer user.

Laptops are generally more costly than desktop computers, although that may not be the cost for much longer. The price of both is falling continually, with the price of laptops dropping more quickly. As of May 2005 more laptops were sold in the United States than desktop computers.

Laptops and desktops are actually quite similar in design, with the same basic software, hardware and operating systems. The basic difference between the two is in how these components are fitted together. Laptops, of course, of necessity, must have more compact components.

Desktop computers have motherboards, hard drives, video cards and their other hardware components assembled together and housed in a large case, commonly referred to as the CPU (central processing unit) or the tower. In a desktop model the keyboard, mouse, monitor, printer and other peripherals are connected to the tower by wire or through the newest technology are connected wirelessly. Each CPU or tower has plenty of extra internal space for additional cards, cables and the circulation of air.

A laptop, of course, is considerably smaller and lighter weight than the smallest tower for a desktop. Neither the mouse, keyboard nor monitors are peripherals, but rather part of the laptop unit itself. There isn’t a lot of extra space for circulation of air or addition of cards. Not only must laptop components be compact but their heat production must be considerably lower than that of desktop components, and they must conserve considerably more power. Thus the additional cost.

The CPU, also called the microprocessor, works with the laptop’s operating system to control the computer. This CPU is the brain for laptops. In a desktop computer a CPU generates a considerable amount of heat, so it must have a fan and a heat sink. The heat sink is made up of plates, channels and radiator fins that work systematically to draw heat away from the processor.

Laptops have CPUs that run at lower clock speeds and voltage. The heat is reduced, and power is not consumed as greatly, but the processor is slower as a result. Most laptops will run faster and at a voltage that is higher when they run on electricity than when they run on batteries.

Laptop processors don’t use pins to mount to their motherboard, which saves room. The two alternatives are for the processors to mount right to the laptop motherboard without any socket, or to use a micro-FCBGA (Flip Chip Ball Grid Array.) The latter replaces pins with balls. The disadvantage of this, however, is that the owner cannot replace or upgrade the processor because it can’t be removed from the motherboard.

Laptops have slow-down, hibernation or sleep modes. These reduce the speed of the CPU when the laptop is not in use. One Macintosh processor actually prioritizes its data to help minimize the drain on its battery.

Some laptops use CPUs made for desktops, but that are designed to run at slower clock speed. Performance is improved in these laptops but they tend to run considerably hotter than other laptops, and their battery life is reduced a great deal.

About The Author

Robert Michael is a writer for http://nhmxservers.com which is an excellent place to find Notebooks links, resources and articles. For more information go to: Laptops & Notebooks.