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If you need that kind of memory bandwidth you'll probably know already, and maybe this will even look cheap.

HBM not only has lotsa bandwidth(tm) but also much better latency?

Latency in conventional DDRx memory is limited by the DRAM array itself, which doesn't change with the interface (DDR, GDDR, HBM, ...). Essentially, with regular DRAM, you cannot do better than the contemporary low-latency DDRx memory. You might chose to increase latency to increase throughput, though.

> Essentially, with regular DRAM, you cannot do better than the contemporary low-latency DDRx memory. You might chose to increase latency to increase throughput, though.

My understanding is that, given how memory systems work right now, typically it's the opposite: increasing throughput decreases latency.

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