Monday, April 25, 2011

5 Things to Consider when Buying a Computer

What to look for when buying a computer.

This is a rather huge topic so this blog post will hardly be "exhaustive" by any stretch. Rather, these are just a few simple things you may or may not already know about buying a new computer.

1. What will this computer be used for? If you want a travelling machine that you can take on holiday and type emails along the way, you don't need anything high end. Almost any cheap (or rather, "inexpensive") laptop will do. Creative writing, spreadsheets, databases, power point presentations are all pretty easy on any computer and none require a lot of horsepower. On the other hand, if you are planning to record and edit high def video, a cheap machine just will not do the job. If you're semi-serious about editing video then more than likely you'd want a desktop type PC that won't be moved around much after it's initial set up to get that job done, so a laptop will not likely meet your needs. Try to do at least a bit of homework by talking to some computer literate friends or co-workers before you go shopping and at lease figure out what you need this machine to do.

2. Does it need to be portable? Here's something to remember: a laptop is a compressed and flattened down version of a desktop computer. What is gained in space is lost to upgradeability. What is gained in portability is lost to less available internal components. Eight hundred dollars (at today's economy) can buy a pretty skookum PC these days, or a decent laptop. More than likely you'll get a better bang for your buck with the desktop than you would with the laptop. Also, desktops can usually easily be upgraded with a new video card, more ram, nicer monitor, faster harddrives, processors, etc., while you are pretty much stuck with what you get with a laptop.

3. Laptops are meant to be portable, not durable. They will not take much in the way of physical punishment. If you accidently drop a laptop or have one get yanked off the coffee table onto the floor by someone tripping over the power cable, you can almost be assured of some damage.

4. There are three main criteria I look for in a new PC.
- CPU speed. Amount of RAM. Harddrive space.
Firstly, I want to know the CPU speed in GHz (ie. is it a 3.2GHz, or 2.3GHz?). The higher the number the better and the number of cores is good to know too. There are single core processors, dual core processors, tri-core processors, quad-core processors, and even hexi-core processors. The more cores the better. The lower numbered ones will be cheaper, of course, but will be working the hardest to get the job done.

Secondly, I want to know how much RAM it has. Older 32-bit machines have a maximum of about 3 gigs of ram. Some can take 4 gigs but will only read 3.5 at the most. The newer 64-bit machines are usually 4 gigs and up. Sixty-four bit is the way to go if you're buying a new machine today. For those who have older software, SOME of it will not work on 64-bit machine, but that 'some' is very few. Most 32-bit programs will run on 64-bit machine just fine; there are of course exceptions. But we move on.

Lastly, I look for harddrive space. Usually, the more the better, but if you'll be using the computer to write a novel and keep notes and maybe some pictures, you won't need a whole bunch of harddrive space; even a few hundred gigs is probably far more than you'd ever normally use. On the other hand, if you're the person who likes to download stuff and collects every video your friends have sent you in the last 10 years, you'll want to make sure you get lots of disk space. As of today, a laptop sized 1TB sells for roughly $140 to $160 here in Canada. (In five years, if you are reading this blog, you'll either laugh at that price or cry. I remember seeing my friend pay about 800 dollars to upgrade his 486 from 4 megs to 8 megs of ram; when 2 megabyte chips were $200 each. Ouch! I myself paid over $500 for a 10gigabyte harddrive. You would be hard-pressed to even find a 10gig drive today. And it sure wouldn't be a months' rent for it either!)

5. If you are considering building a computer yourself or having one built for you, please don't buy a cheap power supply; and if your data is important, make sure you also buy an uninterupted power supply (UPS) to go with your power supply. That is so you won't have to deal with power issues later on. Get prepared now rather than wish you had later.

I hope that helps.

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