Cost
The cost for a laptop is considerably higher than for a desktop with comparable speed and power. Although laptop prices are falling.
Service and repair costs are much higher too for labtop.To get at the parts, laptops pretty much have to be taken apart. The parts themselves are more expensive--almost double--and labor costs more. With a desktop, you can just open the back or side panel and replace the parts.
Because desktop components can be added or removed separately, unlike many la
ptops' all-in-one design, desktops can operate without some parts.
Laptops' size and design also limit your upgrading options.This is a secondary cost: I
n a relatively short time your portable becomes obsolete.With a desktop, you can extend the life by adding peripherals more easily.
Power
For years, users found lack of speed and power to be a problem with laptops, but it's no longer a major issue. With the smallest laptops, battery life still can be less than with mid-range ones--or desktops--but the newest processors significantly extend laptops' running speed and battery life.
After testing budget desktop and laptop models, Consumer Repor
ts found the speed ranges to be equivalent. And many budget laptops have battery life of at least four hours, long enough for an airline flight.