Samsung showed off a new generation of its LPDDR5X-PIM memory at Hot Chips 2026, according to ServeTheHome, which covered the presentation. The site's assessment was that this generation of the processing-in-memory design "looks more polished" than what Samsung has shown before.
That single word — polished — is doing a lot of work, so it's worth unpacking what PIM actually is.
In a conventional computer, memory and processor are separate neighborhoods. Data sits in RAM, gets shipped down a bus to the processor, gets crunched, and gets shipped back. For decades that arrangement was fine, because the math was the slow part. With modern AI workloads it often isn't: the chip finishes its calculation and then waits around for the next batch of data to arrive. Engineers call this the memory wall, and it's one reason AI accelerators can look busy while sitting idle.
Processing-in-memory attacks the problem from the other end. Instead of hauling data to the compute, PIM puts modest compute units inside the memory itself, so certain operations happen where the data already lives. LPDDR5X is the low-power memory standard used in phones, laptops, and increasingly in power-constrained AI hardware — so an LPDDR5X-PIM part points at devices where both battery life and AI performance matter.
Samsung has demonstrated PIM concepts publicly before, and Hot Chips — an annual conference where chipmakers present technical designs to their peers — is the traditional venue for showing that an idea has matured. ServeTheHome's read that this version is more refined suggests movement from research demo toward something buildable.
Why it matters: if memory can do part of the thinking, the biggest bottleneck in AI hardware gets smaller — and AI could run better on the devices in your pocket, not just in data centers.