Everything you need to know about Optane right now

Here's the difference between Optane Memory, Optane drives, Optane DC Persistent Memory and Intel's new Optane Memory SSD.

Intel’s Optane technology promises fairly big jumps in performance, but not all Optane products function in the same way, so it behooves you to understand Optane’s various implementations.

There are currently three official iterations of Optane-based products. Although all share the same basic 3DX Point-based media, they have distinctly different purposes, and differing impacts on performance. And one of those products is being used in a fourth iteration that we'd also like to highlight.

intel optane ssd 905p Intel

Most people will think of an add-in card for Optane.

1. Optane SSD 

This is probably what most PC tech heads think of when they hear “Optane.” It’s basically Intel’s 3DX Point media—from 58GB to 905GB—mounted in a tiny M.2 stick for laptops, or in an add-in card (or odd duck U.2) for desktops. Optane SSDs are basically the same as traditional NAND-based SSDs we’ve all come to enjoy. The drives are pricey compared to NAND-based SSDs, but for those who prioritize low-latency and low-queue-depth performance, it’s likely worth it. You can read our review here

intel optane ssd 800p beauty angle Intel

Optane Memory is used to accelerate hard rives in many budget laptops and budget desktops.

2. Optane Memory

Optane Memory was actually the first implementation to hit the streets and uses fairly small, 16GB or 32GB Optane modules to act as a cache or storage tier for a hard drive. The concept isn’t new, but the use of Optane for it is. You can read our review of it here, but the upshot is that it’s pretty good—when compared to a hard drive. Optane Memory today is more commonly found in lower-end laptops, which actually have hard drives that can be accelerated by the technology.

Optane Memory has also been an option in budget desktops, but oddly, did not work with budget CPUs until recently.

The term "Optane Memory" makes sense because at a capacity of 16GB or 32GB, it’s not really enough to use for primary storage at all. While it can function similarly to an SSD drive, calling it a drive doesn’t really make sense.

intel optane persistent memory Intel

Optane DC Persistent Memory is today only in servers.

3. Optane DC Persistent Memory

The third option doesn’t currently impact consumers as it’s only a server technology. Called Optane DC (for Data Center) Persistent Memory, it packs up to 512GB of Optane media in what looks like a memory module. The modules get slotted into a server’s DIMM slots with a CPU that supports it, and can function as either slower RAM (but at a stupidly huge capacity of 3TB) or as fast persistent storage. Obviously, at a reported $6,751 for a 512GB stick and the requisite Xeon CPU that supports it, it’s not a consumer product at all. However, that will likely change. Intel spent a boatload to make Optane, so its every function is apt to find its way to consumer uses.

optane h10 Intel

It looks like a standard Optane Memory or Optane SSD, but the new Optane H10 is really two drives in one.

4. Optane Memory SSD

You know that Optane Memory (number 2 on our list) is used to cache or tier storage from a slow hard drive. The problem: Most laptops are moving away from hard drives and many only have room for one M.2 storage device.

To address this, Intel released its “Optane Memory H10 with Solid State Drive.” The H10 combines a 16GB or 32GB Optane Memory drive with a QLC NAND-based SSD from 256GB to 1TB. The concept is to accelerate the typically meh performance of QLC NAND with the high performance of Optane Memory. How it performs, we can’t say yet, but denser QLC NAND certainly isn’t the fastest in its category.

Unlike other drive combos that handled integration at the controller level and present as a single drive, the Optane Memory H10 operates much like Optane Memory does with a hard drive, via a driver doing the work of combining the drives.

Intel doesn’t officially call it a “Optane Memory SSD,” but we think sums it up since you get the Optane Memory cache and decently sized storage too.

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Gordon Mah Ung

PC World (US online)
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