I had cause recently to have an online conversation with a reader who believed that the only worthwhile computer equipment was the very fastest thing you can get. This person was looking at the needs equation from their own perspective which was as a gamer. This is so small a percentage of computer users, particularly mobile computer users, that all I can say is that they were completely and utterly wrong for the vast majority.
The vast majority use a computer to process documents (either read or create or both), browse the internet, read email, access social networking sites (business and/or personal), play music and play video. This is self evident in so many ways, and points to the fact that today a computer, particularly a mobile one, only has to be fast enough. In the old days the development of software outpaced the hardware periodically, requiring the hardware to be replaced just to get an acceptable basic performance. Today even a five year old laptop can run the latest word processor, web browser, email program, and music/video player. The issue is now so much more about battery life, weight, and ease of use.
So what is good enough today? Well as many have shown, most users are perfectly happy with netbook/notebook/notbooks that run with single/dual core 1.5/1.6GHz processors with 1-2GB of RAM. You can see these sorts of PCs still being heavily sold and also cropping up in most homes and schools. I will say though that the experience is not really swish with the lowest specification but they are good enough for almost everyone.
What do I use? Well I do have a number of netbooks with a minimum of 2GB RAM and 1.6GHz Atom processors and they run well enough although can be a little sluggish at times with some software combinations. For my main machine, I have a 1.2GHz Dual Core processor with 4GB of RAM and this is perfectly fine and gives excellent performance (along with the fact that I get excellent battery life at the same time). This is even good enough for some light encoding work (albeit slower than having a 2.2GHz Dual Core). This is what you should go for and nothing less. It is going to take more than a couple of years for people to come up with software that needs more than this. The most important things to have are RAM and Dual Core for that snappy response, as the enemy of all machines is having lots of disk access due to swapping and having a processor locked up doing something else.
