Intel’s crazy-fast 3D XPoint Optane memory heads for DDR slots (but with a catch) - eppsreck1993

Information technology was clear from the offse that Intel and Micron's new 3D XPoint memory—which promises "1,000 times" the performance of now's SSDs—would require a faster pathway into the Personal computer.

Later on all, SATA, SATA Express, and fifty-fifty PCIe deficiency the sheer bandwidth to support the levels at which 3D XPoint can execute. But this week Intel officially disclosed its plans for 3D XPoint storage support: It will slip into a DDR4 slot, and it's a decision that won't make vendors happy.

The story buttocks the tarradiddle: When Intel and Micron introduced its jointly built memory, everything seemed rosy. Just now that details of how it will be enforced are starting to drip out, the devil's reach is becoming apparent.

Intel's 3D XPoint-based DIMMs are electrically and physically compatible with DDR4, and offer a four-fold increase in capacity. Intel also says the memory offers massive performance benefits without modifications to your OS or applications.

Intel will proffer 3D XPoint memory that actually drop off into DDR4 slots.

Thus if all that sounds good, why the grousing? The problem, it seems, is how Intel is rolling out support. While the 3D XPoint DIMM is electronically compatible and pin-compatible with DDR4, Intel's compatibility solution is proprietary.

Rick Merritt of EETimes first gear chronicled the unhappy reactions to Intel's word here. Merritt points out that contempt Intel's exact of organism electrically sympathetic, company officials conceded an entirely raw CPU and newfangled extensions will be required to access 3D XPoint.

"They'ray extending the (DDR4) interface," Jim McGregor, an analyst with Tirias Research, told PCWorld in an interview. "It's passing to Be electrically and pin compatible, but the way they talk bequeath live different."

With the only source of the new type of memory coming from a pleasing conjointly closely-held by Micron and Intel, no unitary's going to be happy, McGregor said. "If you don't have multi-vendor support, the OEMs are active to backlash," he said.

McGregor compared the 3D XPoint situation to what happened with Direct RDRAM: Intel proved to push a spick-and-span memory type and acceptable undreamed pushback from memory makers. In this battle, Intel and Rambus created a new type of high-velocity, serial retention that no one sought-after. The outcry gave Intel a gory nose, and the company actually had to do a 180-degree turn, dumping RDRAM and embracing the standard that ultimately won: DDR.

McGregor likewise aforesaid memory makers are vexed by a lack of transparency.

"The independent frustration is [Intel and Micron] won't narrate us anything about the damned stuff," he aforesaid.

Tirias Research

This Micron slip up from IDF seems to show 3D XPoint being ill-used quite differently than Intel's plan.

McGregor said both Micron and Intel were reluctant to reply questions with the other party in the room—an awkward dynamic considering they're partnering. Nonetheless, IT's worth noting that  Micron's plan for what it does with 3D XPoint differs from Intel's.

For example, balk out the slip above, from Micron's presentation at IDF. It shows 3D XPoint living on the PCIe bus and actually under the industriousness JEDEC standard that was announced in May. That standard, called NVDIMM, sounds conceptually nearer to what Intel is planning, but the ii don't appear to be compatible from what we recognise now. JEDEC officials were unavailable to comment.

As a Drachm maker, Micron officials also insist DRAM testament equal relevant with 3D XPoint, McGregor said. But that doesn't square with Intel's statements. The company has said from the beginning that both PC configurations that get into't indigence the performance of DRAM can use just 3D XPoint. I covered what that world might look like present.

Completely these concerns, course, will emerge foster down the road. In the near terminus, we'll see 3D XPoint-based SSDs that plug into SATA, SATA Express and PCIe slots. It will be a while earlier 3D XPoint becomes main system memory, and Intel won't actually ship its 3D XPoint DIMM Xeon until 2022 at the earliest. And so even if there are complaints from the industry, it won't matter any time soon. Furthermore, 3D XPoint benefits might silence critics anyhow. Intel said in one scenario, 3D XPoint systems could come stoked with a 6TB—yes, terabyte—DIMM inside.

That'll mainly appeal to people running servers and information centers, but Intel has said since the beginning that IT will also object 3D XPoint at enthusiasts and gamers (it already pushes rebranded and neutered Xeons into that crowd together). Soh Eastern Samoa more as it seems that 3D XPoint is currently a fantasy technology, and we shouldn't occupy about proprietary approaches to compatibility, information technology will one of these days Edwin Herbert Land in a machine for you.

Source: https://www.pcworld.com/article/423145/intels-crazy-fast-3d-xpoint-optane-memory-heads-for-ddr-slots-but-with-a-catch.html

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