Computers: speed, memory and buying well
Diagnose a slow computer properly, understand what memory and storage do, and buy a laptop on the specifications that change daily use rather than the ones on the box.
A computer that needs a long minute to become usable after you log in is rarely worn out. It is usually clogged, short of memory, or busy running something you never chose to install, and telling those apart decides whether you spend an afternoon or several hundred on a replacement. Speed, memory and buying decisions are where most people spend money they did not need to spend, usually on the wrong part.
If the machine in front of you is the problem, work through the causes of a slow computer in the right order, since the fix depends on whether the drive, the memory or the software is the bottleneck. If you keep hitting a wall with a video call and a pile of browser tabs open, settle how much memory you actually need before you buy any. Only then reach for a laptop buying checklist that separates the specifications you feel every day from the ones printed on the box. If the slowdown arrived suddenly alongside pop ups, treat it instead as a cleanup job.
For a small business the sums change, because a slow machine is paid for daily in staff time, so a replacement that looks extravagant for one person often pays for itself across a team.
A computer stays safe only as long as its maker keeps fixing it, and tablets are the least clear case. How long tablets get security updates gathers the end dates for iPads, Fire, Galaxy Tab and Pixel tablets in one place.
The battery is usually the first part of a laptop to wear out. How many charge cycles a laptop battery lasts puts Apple, HP and Dell's ratings in one table, from 300 cycles to 1,000, and shows how to read your own count.
Articles in this hub
- Why your computer is slow and what actually fixes itThe real causes of a slow machine in order of likelihood, the fixes worth doing, and the optimizer software that makes things worse.
- How much RAM do you need in 2026, honestlyWhat RAM actually does, the difference between used and needed, how much different kinds of work require, and why soldered memory changes the buying decision.
- The laptop buying checklist that survives the marketingThe specifications that change daily use, the ones that do not, and the questions to answer before reading a single review.
- Is 256GB enough for a laptop?A 256 GB drive shows as 238 GB in Windows and leaves about 138 GB for you. The worked budget, what fits in it, and who should buy 512 GB.
- How long will my laptop get security updates?Chromebook, Windows 11, Surface, Mac and Linux support periods in one table, why laptops have no printed end date, and the October 13 Windows deadline.
- How long do tablets get security updates?iPad, Fire, Galaxy Tab, Pixel Tablet and Lenovo support periods with end dates, why brand tables disagree, and why most tablets escape UK disclosure law.
- How many cycles does a laptop battery last?300 to 1,000 charge cycles. Apple, HP and Dell ratings in one table, what counts as a cycle, how to read your count on Mac and Windows, and when to replace.