At Hot Chips 2026 , Samsung presented a 16 GB LPDDR5X memory package that delivers 614 GB/s of internal bandwidth to its own compute units. For scale, 614 GB/s matches the memory bandwidth of a top-spec Apple M5 Max across its entire unified memory system: the 40-core GPU configuration in the $3,499 MacBook Pro. Samsung claims that number from inside one memory package, against the 76.8 GB/s that escapes through its external pins. Tom's Hardware reported the resulting eightfold difference . That eight-to-one ratio makes the case for Processing in Memory. DRAM banks already provide most of the bandwidth; the external pins cannot expose it. The terms # Bank. DRAM contains banks, independent arrays that can operate in parallel. A modern LPDDR5X die has dozens. Together they deliver enormous internal throughput, but they share a narrow external interface. GEMV vs. GEMM. Matrix-vector multiply versus matrix-matrix multiply.…