Samsung and SK Hynix spend billions more on DRAM production to feed the never-ending hunger for AI servers

HardwareMemorySamsung and SK Hynix spend billions more on DRAM production to feed the never-ending hunger for AI serversWhen you purchase through links on our site, we may earn an affiliate commission.Here’s how it works.

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(Image credit: Samsung)

A promotional image for Samsung�s latest HBM3E memory chips, showing a generic image on the left and a stylised render of the internal structure in a chip on the right

For as long as it has been running, the DRAM industry has been going through cycles of increased production and then scaling it back to boost profits. But now the two largest manufacturers are set to spend billions of dollars to significantly increase RAM chip output, all to meet the neverending demand for AI computers.

Samsung and SK Hynix manufacture all kinds of DRAM, be it DDR4 or DDR5 to go into your PC’s motherboard, as well as GDDR6 (and now GDDR7) for your graphics card. But when it comes to the mega-processors, like AMD’sInstinct MI300and Nvidia’sH100, the memory of choice is so-called High Bandwidth Memory (HBM).

What makes HBM special is that it comprises multiple DRAM chips all stacked together, with power and data transmitted through wires that run vertically through the die (called ‘through-silicon vias’ or TSVs, for short). Having lots of memory accessed in parallel massively boosts the read/write bandwidth.

Now, at this point, you might be thinking something along the lines of “Well, that’s all interesting but that’s just for AI, not PC gaming.” But here’s the thing: the DRAM dies used for HBM can theoretically also be used in other applications, such as system RAM or graphics card VRAM.

HBM has been in the latter before—AMD was the first manufacturer to use HBM with a GPU in itsRadeon RX Furyseries, and then again with theRX Vega 64and its siblings. The latest gaming graphics card to sport HBM was theRadeon VIIand sadly, we’ve not seen it since as the outright speed of GDDR6X and GDDR7 offers sufficient bandwidth.

But if the market becomes awash with spare dies for HBM modules, we may possibly see a return of it in the high-end market, although it will just be for Nvidia cards, asAMD is backing out of that sectorfor the time being.

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It’s also possible that should the AI bubble pop, Samsung and SK Hynix could end up with a veritable mountain of DRAM dies that are no longer in demand and potentially be repurposed for other products. I don’t know how well memory intended for HBM modules will work as, say, standard system RAM but you never know—we could be looking at a return to very low memory prices again.

However, as the tech world is still utterly hell-bent on AI-ing everything, it’s unlikely that PC gaming will see any benefit from increased DRAM production just yet.

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