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A comment on The Intel Optane SSD DC P4800X (375GB) Review: Testing 3D XPoint Performance. Parent comment

Re:The Intel Optane SSD DC P4800X (375GB) Review: Testing 3D... by Dylan16807 on Thursday April 20, 2017 @05:57PM (#14161277)
What context am I missing? While Analemma_ was talking about using it to augment DRAM, like you are, endorphone was very specifically talking about replacing DRAM in that comment. And that comment claims that it already has good enough latency for the job.
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Re:The Intel Optane SSD DC P4800X (375GB) Review: Testing 3D... by endorphone on Thursday April 20, 2017 @06:13PM (#14161386)
It's turtles all the way down, and I think this is needlessly splitting hairs.

L1->L2->L3->(L4->)DRAM->Storage

3D XPoint is being considered as the DIMM-module, byte-addressed "memory" before storage. Saying that it "augments" DRAM is almost meaningless because we already have multiple levels of DRAM.

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Re:The Intel Optane SSD DC P4800X (375GB) Review: Testing 3D... by davrosthedalek on Thursday April 20, 2017 @06:58PM (#14161642)
If I am not mistaken, we have only one level of DRAM. Caches are SRAM. (Also, DRAM on DIMM is not byte-addressable)
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Re:The Intel Optane SSD DC P4800X (375GB) Review: Testing 3D... by cocoablazing on Thursday April 20, 2017 @11:05PM (#14162809)
The PS2, Xbox 360, Wii, and some intel chips with iris provide on-die DRAM caches.
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