Back

Why is RAM Suddenly So Expensive?

21 July 2026

It feels like just yesterday that RAM upgrades were practically free – and now a 32 GB stick can cost almost as much as a short city break. If you’ve been scratching your head over soaring memory prices, the usual explanation you’ll hear is “AI.” It sounds suspiciously vague… but in this case, it’s annoyingly accurate – just not in the way most people assume.

The Memory Family: RAM, VRAM, and HBM

To understand what’s happening, you need to know a bit about memory. RAM, VRAM, and the ultra-fancy AI memory called HBM are essentially cousins. All are forms of DRAM, manufactured using very similar processes, in the same factories, and by a surprisingly small number of companies – namely Samsung, SK Hynix, and Micron. That’s it. Three firms producing the vast majority of the world’s memory.
Think of it less like a bustling free market and more like three bakers deciding what bread exists in town.

How AI Data Centres Are Hoovering Memory

Enter AI data centres. Training and running large models isn’t just about GPUs packed with VRAM – they also need enormous amounts of system RAM to shuffle data, stage batches, and keep everything moving smoothly. A single AI server can easily house terabytes of DDR5 RAM, and a single data centre can contain thousands of such servers. That’s not “a bit more demand” – that’s hoovering the warehouse.

Why Memory Prices Are Climbing

Here’s the catch: memory fabs can’t just whip up more chips overnight. Building or expanding a fabrication plant takes years and costs billions. Memory is famously a boom-and-bust industry, and manufacturers have been burned before by ramping up production right before demand collapsed.
So, instead of expanding, they’re making the rational move: prioritising the most profitable memory. Right now, that’s HBM for AI accelerators, which sell for far higher margins than boring old consumer DDR5.
The result? Less capacity goes to consumer RAM, more goes to high-margin AI memory, and prices climb. Your PC isn’t suddenly demanding AI – it’s just that data centres can outbid you without even noticing you were in the room.

The Takeaway

Your next RAM upgrade isn’t expensive because it’s better. It’s expensive because someone else, somewhere, is willing to pay vastly more. Understanding the forces behind memory pricing helps make sense of those shocking sticker prices – and shows just how intertwined AI and everyday computing have become.

Watch the full video to see the story behind the RAM price hike in action.

Explore more computer science insights and resources at CraignDave.org

Related posts

If a NOT gate turns zero into one, where does that one come from?

How does a NOT gate turn a 0 into a 1 without creating something from nothing? Discover how voltage, transistors and digital logic work together to power the technology inside every modern computer.

15 October 2026

Ofsted after the Big Listen: have the rules changed, or just the packaging?

Ofsted has changed its inspection framework, but many school leaders question whether it has changed the culture surrounding inspection. We explore whether report cards can rebuild trust, reduce pressure and create an accountability system that genuinely helps schools improve.

9 October 2026

Should I make my own resources?

Should teachers really be making all their own resources? We explore the balance between creating, buying and adapting resources — and why thoughtful planning matters more than who made them.

5 October 2026

How does age verification technology work?

Can technology really tell how old you are? Explore the computer science behind age verification and the privacy and accuracy questions it raises.

28 September 2026

UTF-8 is witchcraft, right?

Ever wondered how your computer can happily store a simple English letter, an emoji, a pound sign and characters from […]

22 September 2026

Why teaching models keep returning

Teaching frameworks can provide valuable guidance, but when they become rigid formulas, they can undermine professional judgement. The goal isn’t identical lessons – it’s consistently effective teaching.

18 September 2026

Do GCSEs doom students to fail?

GCSE results may look stubbornly flat, but the reality behind the numbers tells a very different story. Why has further improvement become so difficult, and are we measuring success in the right way?

11 September 2026

Will Quantum Computers Break Encryption?

Could quantum computers really break encryption and put our data at risk? We explore the reality behind the hype, from qubits and Shor’s Algorithm to the future of post-quantum security.

7 September 2026

Is AI a panacea?

AI is moving from experimentation to expectation in schools. But as adoption grows, the focus must shift from simply using AI to using it well. Discover how schools can balance workload, learning, safety and professional judgement — without losing the human element of great teaching.

4 September 2026