{"id":20293,"date":"2026-01-28T04:07:06","date_gmt":"2026-01-28T04:07:06","guid":{"rendered":"https:\/\/creatorkitdepot.com\/?p=20293"},"modified":"2026-01-28T04:07:06","modified_gmt":"2026-01-28T04:07:06","slug":"glyph-atom-ex40-ssd-review-excellent-performance","status":"publish","type":"post","link":"https:\/\/creatorkitdepot.com\/?p=20293","title":{"rendered":"Glyph Atom EX40 SSD Review: Excellent Performance"},"content":{"rendered":"


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\"A<\/p>\n

Earlier this year, memory brand Glyph debuted its new Atom EX SSDs<\/a> with a specific focus on serving content creators. With Sandisk<\/a> still refusing<\/a> to publicly acknowledge the problems with its compact SSDs<\/a>, I was pretty happy to see another brand step up and create something for photographers and filmmakers. <\/p>\n

I get it: when a company says that a product is made specifically for any use case, it\u2019s often at best 50% marketing. But still, seeing a company really focus on content creators is nice, especially when the benefits of the product are legitimately things that the audience cares about. Despite what many might think, there are differences between SSD brand A and SSD brand B when it comes to performance \u2014 we know it from our extensive conversations with memory manufacturers, and we see it in testing. Drives respond differently to workloads when their onboard controllers are manufactured with that use case in mind. <\/p>\n

The \u201cgood\u201d SSDs will work hard to maintain their peak read and write speeds regardless of how long you run them, how full of data they are, and how much you add to or delete from them. For filmmakers shooting tons of H.265 or ProRes HQ footage and mixing that in with high-resolution timelapse footage, that\u2019s important. The last thing they want to see is extended render times or choppy playback due to the lackluster speed of access to a drive. For photographers, enough time is spent waiting for Lightroom to import and export as it is: very few are interested in making that wait time longer due to slow storage. <\/p>\n

There is really only one other company that has been toeing the \u201cconsistency\u201d line like this, and that\u2019s ProGrade Digital with its PG10 SSD. Our testing confirms the company\u2019s promise: no matter what you do to that drive, it\u2019s going to hold steady<\/a> at a pretty consistent pace. However, to get that consistency, ProGrade\u2019s speeds took a hit, and the drive itself is massive. <\/p>\n

Glyph seems to be making the same promises as ProGrade, but in a much more compact package and without that speed hit. <\/p>\n

Before we get into the meat of this review, let\u2019s talk price: the Glyph Atom EX40 comes in 1TB, 2TB, 4TB, and 8TB configurations that cost $389, $499, $849, and $1,699, respectively. <\/p>\n

Glyph Atom EX40 SSD Review: Design and Build Quality<\/h2>\n

No SSD is really \u201cattractive\u201d to look at, but Glyph is particularly bland in this regard. The Atom EX40 is just a black metal rectangular block with a silicone bumper stretched around it. The whole affair is just larger than the palm of my hand (I don\u2019t have particularly large hands, for what it\u2019s worth), but it weighs more than you would think given the size. One end has a USB-C port on it and a small LED next to it that illuminates when it\u2019s plugged into a computer. <\/p>\n

That\u2019s it. <\/p>\n

Honestly, I\u2019m good with that. I\u2019m all for inventive designs, but at the end of the day, I\u2019m jamming this block into my tech pouch, and I only care if the data on it is accessible, not if it catches eyes while I\u2019m parked at a coffee shop. <\/p>\n

\"A<\/p>\n

What I find most interesting about this design is how it looks like it\u2019s going to just be a thermal nightmare. Everything I\u2019ve been led to believe about SSD design is broken by this little metal brick, especially since the many OWC drives I\u2019ve been using over the last year all use a cutout fin design to help sink heat. So, a smooth rectangle of metal covered in silicone sounds<\/em> like a thermal nightmare. But it\u2019s somehow not. <\/p>\n

Glyph says it uses a solid aluminum core and a second outer shell that have an increased thermal ceiling. This combination allows it to sink heat extremely well away from the internal components. I will say this results in the Atom EX40 getting warm to the touch nearly immediately upon being powered on, but that temperature basically never rises after that. Even after getting pounded with terabytes of data, the Atom EX40 just hung out at that slightly-warmer-than-body-temperature level. It also operates silently, which is great. <\/p>\n

The Atom EX40 isn\u2019t what I would call \u201crugged,\u201d at least not like the dust and water-resistant drives that I\u2019ve tested in the past, but it\u2019s not fragile either. You\u2019re going to want to keep water off it, but you shouldn\u2019t worry about jostling it, getting dust on it, or even dropping it (from a reasonable desk height, anyway). <\/p>\n

The aforementioned USB-C port is the latest 40Gbps USB-4, which is compatible with a huge range of ports on computers, including previous USB 3.0, USB 3.1, and Thunderbolt 3, 4, and 5. <\/p>\n

Glyph Atom EX40 SSD Review: Performance<\/h2>\n

Glyph says its SSDs are designed to withstand actual, real-world use by content creators. That means it knows the drives aren\u2019t just going to be used to store things on, they\u2019re going to be worked off of. We hear a lot of claims when it comes to SSDs, so we always test them to see if those claims hold water. <\/p>\n

PetaPixel\u2019s SSD testing involves checking the speed of the SSD right out of the box, then filling the SSD to capacity and immediately checking the speed again. Finally, the drive is formatted, and the speed is checked a third time. What this test does is not only measure if an SSD can properly manage its heat (because filling a multi-terabyte drive generates a ton of it), but also if the onboard controller is able to properly maintain performance even when the drive has data written to it and deleted from it. <\/p>\n

We\u2019ve seen some SSDs really struggle with this. For example, the LaCie Rugged SSD Pro oscillates wildly when put under this strain, as does OWC\u2019s older Envoy Pro FX SSD. OWC successfully fixed this issue with the Envoy Ultra, and it, along with the ProGrade PG10, were the two most consistent SSDs we had tested, with ProGrade\u2019s being the best performer in the USB-4 space and OWC\u2019s being the best in the Thunderbolt 5 space. <\/p>\n

Glyph, however, has unseated ProGrade. Not only is it just as consistent (if not slightly more so), it is also almost twice as fast. While the ProGrade topped out at around 1,800 MB\/s transfer speeds, the Glyph Atom EX40 cruises at north of 3,000 MB\/s no matter how much data is on the drive or how hard we worked it. <\/p>\n

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Click to view larger.<\/figcaption><\/figure>\n

That means it is simultaneously the fastest and most consistent USB-4 SSD that PetaPixel<\/em> has ever tested.<\/p>\n

Here are the raw numbers:<\/p>\n