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Your data might even fit in the CPU L3 cache... But most likely you want your data to be persistent. But how often do you actually "pull the plug" on your servers!? And what happens when SSD's are fast enough ? Will we see a whole new architecture where the working memory is integrated into the CPU and the main memory is persistent ?

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On one hand it would be cool to have some persistence in the CPU. On the other -- imagine if rebooting a computer didn't make the problems all go away. What a nightmare.

That was the promise of optane. Unfortunately nobody bought it.

What do you mean by "nobody"?

Significant % of top 500 fortune used it

Not enough to stop Intel from killing it. Had they been using it seriously at volume this would not have happened.

a lot of people were scratching their heads on how to put optane to use. a fast ssd? or a slow DRAM? with a propietary api? and requiring support from the hardware platform? the whole product line was inconsistent as they use the same name for both storage devices and NVDIMM.

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