RayNeo GT Max Refresh Rate and PPD Explained: 120Hz (2D) / 60Hz (3D), 38 PPD

RayNeo GT Max’s display runs at up to 120Hz when showing standard 2D content and 60Hz for 3D content. RayNeo also publishes 38 pixels per degree (PPD) as the panel’s official figure. These are two separate measurements answering two separate questions: refresh rate is about how smoothly motion plays back, and PPD is about how sharp text and fine detail look. Both come from RayNeo’s GT Max product page, current as of early October 2026.

This article covers what each number actually changes about using the glasses and where 38 PPD sits relative to how sharp the human eye can resolve detail.

The Numbers at a Glance

Panel size and optical engine are included here for a complete spec reference. The rest of this article focuses on what the refresh rate and PPD numbers change about actually using GT Max.

GT Max’s Refresh Rate: What 120Hz and 60Hz Change in Practice

GT Max’s display redraws the full image up to 120 times a second for 2D content and 60 times a second for 3D content. Refresh rate is a separate measurement from resolution or sharpness: a panel can look sharp on paper and still appear choppy in motion if its refresh rate is low, and the reverse holds too, which is why GT Max’s 38 PPD (covered below) and its refresh rate are two different specs worth judging separately.

The practical effect shows up most during motion. Fast camera pans, scrolling text, and anything moving quickly across the screen look smoother with more refreshes per second because there’s less time between each updated frame for your eyes to notice a gap. At lower refresh rates, the same motion can show visible judder or a slight smear as objects move.

Refresh rate caps how often the display can redraw, but what you actually see also depends on what the source device sends. Content shot at 24 or 30 frames per second doesn’t become 120 unique frames per second just because the display can run that fast; and real-time rendered content (a game or a scrolling UI) only reaches 120Hz on screen if the host device is actually outputting at that rate. In practice, 120Hz is the display ceiling for 2D content, not a floor every source will hit automatically. Where 120Hz shows up most reliably is in the display’s own handling of smooth motion, scrolling UI from a 120Hz-capable source, and games or interfaces whose source device outputs at that rate.

Scrolling through a phone or laptop screen mirrored onto GT Max can be a case where 120Hz is noticeable, provided the source device outputs at that rate: scrolling text and UI elements (a long webpage, a document, a chat log) can look smoother than on a 60Hz display.

Does 120Hz Hold Up When You Connect a Phone, Console, or Handheld?

How GT Max connects to a source device depends on what you’re plugging in, per RayNeo’s compatibility list:

Nintendo Switch is a case where RayNeo’s own pages don’t agree with each other:

• GT Max’s product page groups Switch together with PS4, PS5, and Xbox under the HDMI Adapter connection method.
• GT Max’s interface specs separately note that a Switch 2 needs a “Back Clip” accessory (the original Switch doesn’t).
• RayNeo’s separate JoyDock accessory page, built around console docking, lists its compatibility as the Air series (Air 2, Air 3s, Air 4 Pro, and similar) plus Nintendo Switch, and doesn’t mention GT or GT Max at all.

Those two pages describe Switch support differently, so if connecting a Switch is a deciding factor for you, it’s worth confirming the exact setup, including which accessory you’d need, directly on RayNeo’s product page before buying.

RayNeo’s GT Max product page confirms the panel’s up-to-120Hz 2D figure as a display spec, but it doesn’t publish a device-by-device breakdown of what refresh rate reaches the glasses once a specific device and connection method (direct USB-C versus the HDMI Adapter) are in the loop. Treat 120Hz as the panel’s documented ceiling rather than a confirmed number for every connection method.

3D Content Runs at 60Hz

RayNeo’s product materials publish the 60Hz figure for 3D as a spec but don’t document the specific internal mechanism behind it, so this article treats the 2D and 3D refresh rates as the published numbers to plan around rather than attempting an engineering explanation of how the panel allocates refresh budget. 60Hz is still within the range most people find smooth for 3D movie and game content; it’s a lower number than GT Max’s own 2D mode, not a low number in absolute terms.

What 38 PPD Means for GT Max

GT Max’s 1920x1080 panel is spread across a 59-degree field of view, and RayNeo publishes 38 PPD as the panel’s official figure. PPD measures how many pixels fall within each degree of your field of view, which is why it’s a better predictor of perceived sharpness than resolution by itself, and why we’re using RayNeo’s own published value rather than trying to recompute it from the raw panel resolution and the stated FOV.

RayNeo’s other AR glasses model, GT, uses the same panel at a narrower 46-degree FOV and RayNeo publishes 49 PPD for it, a sharper number precisely because the same pixel count covers less of your field of view. A full side-by-side of what else differs between the two is covered in RayNeo GT vs GT Max: Every Spec Difference in One Table; this article focuses on what GT Max’s own numbers mean rather than comparing the two.

How 38 PPD Compares to the Human Eye’s Resolving Limit

Display and XR engineering has long treated roughly 60 PPD, tied to the standard 20/20 vision threshold of about one arc-minute of detail, as the point where the human eye stops resolving individual pixels, often described as “retinal” resolution. RoadToVR and UploadVR both describe 60 PPD as the industry’s long-standing working assumption for what counts as a “retinal” display.

A November 2025 study by researchers from the University of Cambridge and a major AR/VR industry research lab, published in Nature Communications, tested that assumption directly and found it understates actual human vision:

• Study size: 18 participants
• Average foveal resolution (the sharp center of your visual field, as opposed to peripheral vision): 94 PPD for grayscale detail
• Highest individual result observed: 120 PPD

Both figures sit well above the long-standing 60 PPD line.

Against either number, GT Max’s 38 PPD sits below the commonly cited “retinal” threshold, so fine detail such as small text can show individual pixels. GT, with the same panel at a narrower 46-degree FOV, is rated at 49 PPD.

What 38 PPD Feels Like When You’re Actually Using GT Max

In practice, 38 PPD means text and fine UI elements are legible but not perfectly crisp up close. If you stop and focus directly on a line of small text, like a dense paragraph in a mirrored document or a long line of code, you can notice individual pixel edges in a way you likely wouldn’t on a sharper display. Larger text, icons, and UI elements read cleanly without that effect.

Video and games hold up better against this limitation than static text does. Motion, color, and the general busyness of a game scene or a movie frame tend to mask individual pixel edges in a way a still, high-contrast block of text sitting on a plain background doesn’t. If your main use for GT Max is watching movies, playing games, or using Movie display mode (GT Max’s dedicated video-viewing screen setting), 38 PPD is unlikely to be the thing that limits how good the picture looks. If you’re planning to read long documents, work in a spreadsheet, or spend extended sessions on text-heavy content in Office mode (GT Max’s screen setting built for productivity apps and documents), it’s worth weighing 38 PPD against how much fine-detail sharpness matters to you specifically.

Who Should Pay the Most Attention to Each Spec

If you’re switching between 2D and 3D content regularly, it’s worth setting the expectation up front that 3D playback runs at 60Hz rather than GT Max’s full 120Hz. That’s still smooth for the stereoscopic movies and games it’s built to show in 3D; it’s a different number from the 2D mode, not a downgrade from some promised universal 120Hz.

Frequently Asked Questions

Does GT Max’s 120Hz refresh rate apply to everything I watch or play?

Does GT Max actually hit 120Hz when connected to a PS5, Xbox, or Steam Deck?

Is 38 PPD good or bad for an AR display?

Does a higher refresh rate also mean a sharper picture?

Why doesn’t RayNeo just run 3D content at 120Hz too?

Bottom Line

Refresh rate and PPD answer two different buying questions for GT Max: how smooth motion can look, and how sharp static detail looks. If fast-motion gaming or heavy scrolling is the priority, 120Hz (2D) is the panel’s rated ceiling, with the actual on-screen rate depending on the source device, and device-by-device performance through the HDMI Adapter isn’t independently confirmed. If extended reading or detail-heavy work is the priority, 38 PPD is the more relevant spec, and it sits below where current vision research puts the eye’s resolving limit. For most buyers splitting time between movies, casual gaming, and occasional text, neither number is likely to be a dealbreaker on its own. Current specs are confirmed on the RayNeo GT Max product page.