Upgrade or replace a computer — what it actually depends on

Updated: 13 October 2026

Whether to upgrade or replace a computer rests on three things: the age of the device, the kind of bottleneck, and whether the machine will still take the next version of Windows. As a rough line: up to about four years an upgrade almost always pays off, beyond about six years it almost never does. In between it depends on what exactly is slow — an SSD in a healthy machine does more at every start-up than a new computer of the same class would.

“The computer is slow” is not a diagnosis but a symptom, and it usually has exactly one cause: a classic hard disk. Replace it with an SSD and a three-year-old machine shows a difference no new computer of the same specification would offer. The reverse also holds: if the SSD is already in there and it still drags, upgrading is rarely the answer. This page says how to tell the two apart — even when the answer is that nothing needs doing at all.

Windows 11, SSD, age — the criteria side by side

Criterion	Upgrade	Buy new
Age of the device	Up to about four years, almost always sensible	From about six years, because power supply and fans age too
Classic hard disk fitted	The strongest lever there is — fit an SSD	Only worth it if something else already argues against
Too little memory	Cheap to add as long as slots are free	Necessary when the board no longer supports the amount
Windows 11 not supported	Sometimes solvable via TPM in the BIOS	If the processor is too old, no upgrade helps
Machine used for image editing or CAD	Rarely enough	Usually the right route
Loud fans, crashes, machine runs hot	Cleaning and fresh thermal paste often help	On older machines, a sign the end is near
What it costs	On-site work at €120 per hour plus the part and travel	The device plus €190 setup with data transfer
Windows 10 still running	An upgrade does not extend the lifespan if the device does not support Windows 11	A new device comes with Windows 11 and runs on regular security updates again
Laptop instead of desktop	SSD usually replaceable; on thin devices the memory is often soldered on	More often the way to go when memory and battery can no longer be upgraded
Device serves only a simple purpose, such as a till computer or a writing station	Usually enough as long as it runs healthily and Windows 11 works	Only necessary once age or Windows version demands it
Repair costs against new price	Rule of thumb: sensible up to about a third of an equivalent new device	Above that, especially with an older device, buying new pays off

The table scrolls sideways.

An upgrade pays off when …

The machine is younger than about four years and still has a classic hard disk — then the SSD is the biggest jump for the least money.
Memory is tight and there are free slots.
The machine is otherwise healthy: no crashes, no loud fans, no heat.
Windows 11 is supported, or can be enabled through a BIOS setting.

Buying new is right when …

The machine is older than about six years — power supply and fans have aged with it, and the next repair is coming.
The processor does not support Windows 11 at all.
An SSD is already fitted and it still drags.
The machine is used for work that needs power: image editing, CAD, large spreadsheets.

Windows 11 and the arithmetic

We know two figures, and only those belong here. Fitting an SSD including moving the system takes one to two hours; because someone has to be at the device, the on-site rate applies, €120 per hour plus travel. Setting up a new device including the data transfer costs €190. What the part or the new machine costs we will tell you at current prices — it deliberately does not appear here, because a figure about somebody else's price is wrong three months later. Out of that comes a rule of thumb that does not age: if the upgrade costs more than a third of an equivalent new machine, it only pays off on a young computer. Below that it is almost always the better choice — not least because an upgraded machine keeps its familiar setup. And one figure that is easily missed: if you work both out for five workstations, the time five separate upgrades take is often the larger item, not the parts. From about five devices it pays to replace in one go rather than patch one at a time.

Guide prices, net plus VAT. As of: October 2026 · IT support costs

For businesses in Upper Austria: old devices, data and Windows 11

Windows 10 no longer receives regular security updates, which is why many businesses are now facing the question of upgrading or buying new. An important point for data protection: retired computers usually still hold customer data, invoices and login details. Under the GDPR and the Austrian Data Protection Act (DSG) you remain responsible for them until the data has been securely erased, even if the device is just sitting in the basement or is being passed on. Have the drive wiped before any handover or disposal. Documents subject to the retention obligation (7 years, BAO § 132) belong on the new device or in the backup beforehand.

Florin Feier from Lenzing installs SSDs and memory on site, for example in Vöcklabruck, Gmunden, Salzburg, Linz, Wels and the Salzkammergut, and also handles the switch to Windows 11 or the replacement of a device by remote maintenance once the device is at the business. Setting up a device costs €190, work on site €120 per hour plus travel.

Frequently asked questions

How do I tell whether an SSD is fitted?

Easiest from the start-up: a machine with an SSD is ready about ten seconds after switching on; one with a classic hard disk takes half a minute to a minute and makes audible noises doing it. We can see it remotely in thirty seconds.

Is more memory worth it without an SSD?

Almost never. When both are missing, the SSD makes by far the bigger difference — more memory only helps once many programs are open at the same time. In order: SSD first, then memory.

What happens to our data during an upgrade?

When the disk is swapped the system is transferred, not reinstalled — programs, settings and files stay as they are. If that exceptionally is not possible we say so beforehand; then it is effectively a device change on the same computer.

We have ten old machines. All at once?

Better not. It makes sense to sort them: replace the three oldest, upgrade the younger ones, leave the rest running and look again in a year. Replacing everything at once means having to replace everything at once again in five years.

Which rule of thumb helps when deciding to upgrade or replace a computer?

Five questions in order. 1. Drive: if a classic hard disk is fitted, an SSD comes first. 2. Memory: Windows 11 requires at least 4 GB, and for office work with several programs open more makes sense; if slots are free, adding memory is cheap. 3. Processor and Windows 11: the device needs a supported processor and TPM 2.0; Microsoft’s PC Health Check app shows it. 4. Age: under about four years upgrade, over about six years buy new. 5. Repair costs against new price: if the upgrade including labour costs more than a third of an equivalent new device, it only pays off on a young computer.

Can I upgrade the computer if Windows 11 is not supported?

Mostly not through components. If only TPM 2.0 is missing or switched off in the BIOS, that can sometimes be fixed. If the processor is not on the list of supported processors, neither more memory nor an SSD helps, and buying new is the clean way. What to consider here is covered in the article End of Windows 10: what now?.

What does it cost to upgrade a computer or replace it with a new one?

Fitting an SSD including moving the system takes one to two hours and is charged on site at €120 per hour plus travel. Setting up a new device with data transfer costs €190. We give you the price of the part or device at current prices, because it changes.

Want to sort this out for your business? You can discuss your case on Upgrade or replace or put together an offer for Upgrade or replace.