For years, buyers of tech could rely on a familiar trend - that older devices would get cheaper over time.

That now seems to have stopped, or in some cases, completely reversed.

Apple and Microsoft's Xbox have joined the firms hiking prices for devices and games consoles which are years old.

They and other tech companies have pointed to the rising cost of crucial components needed to build their machines, laying the blame on AI.

Compute-hungry data centres, which power AI, need more and more chips to keep up with demand from AI companies - which means the demand for them is far outstripping supply.

Some people have called it "Ramageddon" - as random access memory (Ram), a once-cheap part of any computer, has now shot up in price.

But big tech's Ram woes are failing to gain the sympathy of many consumers facing eye-watering costs for barely-new electronics.

Apple has raised the prices of its tablets and laptops by nearly 20%.

The news was swiftly followed by Microsoft saying it would yet again raise the price of its five-year-old Xbox Series S and X consoles by at least $100 (£75.70).

The pricing changes, which will take effect from August, are its third in just over a year - and see the cost of a new console be 30% to 40% more expensive than it was this time last year.

"Xbox with another hardware price increase? I gotta laugh to keep from crying," wrote one X user, external reacting to Xbox's console price hikes. "My favorite hobby is cooked."

On Reddit, another user responding to the news said Xbox "may as well just cancel" its upcoming console Helix "because no one will be able to afford it".

RSM UK's tech senior analyst James Bull noted that the four largest US tech firms are expected to spend hundreds of billions of dollars on data centres and AI equipment in 2026.

"That level of demand for memory chips has created a shortage the supply chain cannot keep pace with," he said.

With big tech and AI firms buying memory at scale, and able to pay a premium for longer contracts, manufacturers were also being incentivised to prioritise their orders over consumer electronics, Bull added.

"Essentially, the MacBook on consumers' desks is now competing for the same Dram as the data centres powering ChatGPT and is losing."

Of course, some of the big tech companies, such as Microsoft, have a foot in both camps - investing billions in AI infrastructure while also making consumer products such as the Xbox.

But the memory shortage and price rises have also been compounded by inflation and geopolitical issues, say some.

When Sony announced further price increases to the PS5 console in the UK and elsewhere around the world, it cited "continued pressures in the global economic landscape".

Piers Harding-Rolls of Ampere Analysis said at the time that alongside rising Ram prices, further waves of inflation linked to the war in Iran might have influenced the scale of Sony's price increases.

Hewson told the BBC more recent price hikes could "go even higher as chip makers deal with increased costs resulting from the blockade in the Strait of Hormuz".

"Whilst the last few days have brought renewed optimism that the situation in the Middle East is being resolved, the impact of the last couple of months means some inflation is now baked in," she added.