Environmental
Upgrading versus replacing digital systems
When a digital system becomes slow or unreliable, an organisation can upgrade parts or replace the whole system. The choice balances cost, performance and environmental impact.
Upgrading
An upgrade keeps the main system and improves one or more parts. In a traditional desktop, adding more memory (RAM) or fitting a larger solid-state drive can often be done with little effort. Upgrading extends the system's life and reduces waste, so fewer new devices are made. However, it is limited by compatibility: a new part must work with the existing processor, connections and software. An upgraded machine may also not match the performance of a newly designed system.
Replacing
A replacement means buying a new system and moving the organisation’s work onto it. This may be needed when upgrades cannot deliver enough performance, when an old system needs frequent repairs, or when its software updates have been discontinued. Replacing avoids downtime (time when a system cannot be used) from repeated breakdowns. Newer hardware is faster, so staff complete tasks more quickly and are more productive. Newer systems are usually more energy-efficient, so electricity bills are lower. They also have better support, because manufacturers and software companies still provide updates and help.
Weighing it up
| Consideration | What it means |
|---|---|
| Cost | Upgrading a few parts is often cheaper than buying all new equipment, but repeated repairs add up. |
| Performance improvement | A new system may be much faster than an upgraded old one. |
| Compatibility | An upgrade only works if new parts fit the existing system and software. |
| Energy efficiency | Newer systems often use less electricity. |
| Support | New systems receive updates and technical help for longer. |
| Environmental impact | Upgrading extends life and reduces waste; replacing creates more waste. |
For example, a small three-screen cinema could add memory to its box-office computers so they keep working for another year. If customers still queue while the booking screen loads, and the ticket-printing software no longer receives updates, lost ticket sales and repair bills can make a full replacement the better choice.
Practise this
Pearson BTEC Digital Information Technology · Environmental