Buying new computers always been a tricky question for all the home users who doesn't have much knowledge on computers. Buying new computer that fits users needs depends upon below questions with the suggestion

Why do you want to buy a computer ? For what purpose will you use the computer? Will it be used in a business or at home? What applications will be used on it? This is the primary question in my opinion. A computer that will used for email and surfing the internet at home, has very different resource requirements than one that will be used to run a powerful photo edting  program like PhotoShop. In general, the more resource intensive the application that will be run, the more powerful the computer needs to be. In addition, when you buy a computer, you may need to order specific hardware to accomplish specific tasks. For instance: Do you want to buy a computer that will allow you to watch and make movies? You'll need to buy a DVD ROM Burner. Are you going to run any graphic intensive programs or play video game? You’ll need to buy graphic card with more video RAM, more RAM in general and a faster processor.

Who will be using the computer ? Will it be you, or your 6 year old? Again, different users will require different hardware and/or software, which in turn means you'll need to purchase the RAM or hard drive space that fits those needs.For example, if you're buying the computer to play the most recent 3D computer games, then you'll need some latest technology hardware, as gaming computers use a lot more computer processor and graphics power. Note: Games for little kids can run from very simple to amazing resource hogs, so before you buy a computer, do your homework on the specific requirements for each game your little one will be using. On each software package, there should be a "requirements" note that will talk about the RAM and hard drive space needed.

How long are you planning to run this computer ? If you plan on keeping your new computer for a while, consider purchasing the maximum amount of memory and hard drive space you can afford.You don’t need to buy the top of line processor, but you will need one from the higher end, at least. If you try to go cheap and buy the low end, you won't be happy. I can tell you that 2 or 3 years down the road, when your work computer has been upgraded to the newest, fastest processor, your home computer will start to feel like it's REALLY slow. Research before you buy.