"I usually upgrade my computer when there's a new one with four times the memory and speed," he says.
Unlike in the UK, where people usually upgrade to bigger homes as soon as they can afford to, a house is bought or built for life.
Apple usually upgrades its processors to make them faster and more efficient as the demands of smartphones grow over time with new apps and processes.
In today's world of computer upgrades, you're usually upgrading from a processor that is already fast enough for most tasks, to one that is slightly faster — it's the RAM, video cards and Bus speeds that seem to matter just as much.
While you can usually upgrade the storage or the memory, you cannot upgrade the processor or video card, which will eventually leave your laptop lagging behind.
Usually, upgrading to the latest version of iOS will fix this problem.
Windows usually upgrades their operating system every four to six years, and upgrades can cost anywhere from $100 to $400 depending on the version and the features you need (Business users, home users, gamers, basic users, etc).
Many newer machines, however, come what is called a flash BIOS; the BIOS is stored on a flash memory chip, which can usually be upgraded with newer versions of the BIOS software.
Lifting solar to second and third floor elevations will usually require upgrading the pump size to accommodate the additional lift forces.
"But people with lower status are usually not getting upgraded anyway".
