alt Hacker NewsWhy would you want/need to?
The advantage of HBM over regular non-stacked DRAM is memory bandwidth, which also requires a super-wide memory bus - 2048 bits wide for HBM4. Compare that to the 128 bit wide bus of a modern CPU.
So to take advantage of it on the desktop, or anywhere else, you need that 2048 bit wide bus, and a processor capable of consuming 2-3 TB of data per second!
These are not normal requirements, other than for a GPU.
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SIMD (and especially the modern matrix extensions) can use as much bandwidth you can throw at it.
Right but if HBM memory is all that people want to produce, then building a CPU which can use it use it would be useful on it's own merits.
But in reality we also already have unified memory architecture systems, integrated graphics etc.
> Compare that to the 128 bit wide bus of a modern CPU.
Or 256-512 bits on medium to high end consumer CPUs if you're apple.
At least DDR6 is probably widening things 50%.