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MicronX1003DXPointPCIex16NVMeSSD

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Micron X100 Cover

At Micron Insight 2019 in San Francisco, we got to see something very interesting, Micron’s first 3D XPoint drive. The Micron X100 is a NVMe SSD with a twist. It is a PCIe x16 device that Micron claims are the world’s fastest SSDs. e5-2603 v3

Micron X100 3D XPoint PCIe x16 NVMe SSD

We were able to take a few photos of the Micron X100 SSD at the show. We are going to post these at the embargo time, then update with more of the drive’s details as the company releases them. You can see the PCIe x16 full-height device in the cover image. In contrast, the Intel Optane 905P / P4800X are low profile devices. You can see that there is even an auxiliary power connector on the board.

Micron X100 Back

You can see on the backside of the PCIe card a relatively blank layout. You can see near the I/O plate an array of at least 16 3D XPoint packages. The left side of this picture has a giant component that looks like it is a very large ASIC, FPGA, or PCIe switch. Micron says this is a custom controller but did not talk about what kind it was. Seeing it in person, it is large.

Here is a look at the controller, under the heatsink that covers nearly the entire card.

Micron X100 Controller And Heatsink

Before the keynote, I was able to hold one of the devices. The passive cooling is designed for servers like the Dell EMC PowerEdge R740xd.

Micron X100 In Hand

The PCIe x16 interface is four times what the current crop of Intel Optane PCIe NVMe SSDs have. It has over 9GB/s of read and write bandwidth. Micron claims up to 2.5 million random read/ write IOPS as well.

Micron X100 Performance

As a result, Micron can scale bandwidth much higher. This has another key benefit, it will become the high-performance storage option for AMD EPYC which has more PCIe lanes than current Intel Xeon platforms.

We will post more as we get it. Capacities were not mentioned in the keynote. Still, the drive that was announced today is not simply a render. I had a card in my hands.

Update 2019-10-24: We confirmed with Micron that this is a PCIe Gen3 x16 device, not a Gen4 device. Micron declined to state which generation of 3D XPoint it is.

I asked the question “does this card present itself as a single logical device?” The Micron representative declined to answer but said “that is a good question.”

The reason I asked the question is that the chip underneath the heatsink could also potentially be a PCIe switch device. If that is the case, there is an outside chance that this device presents itself as four logical devices even though it is one physical card.

Update 2019-10-25: Rumor has it this is 2nd generation 3D XPoint. Micron’s official Twitter account even “Liked” that rumor.

Micron X100 2nd Gen 3D XPoint Twitter Like

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