VRR monitors are becoming ubiquitous, now VESA\u2019s certification wants to make them good - Science and Nerds<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/scienceandnerds.com\/2022\/05\/02\/vrr-monitors-are-becoming-ubiquitous-now-vesas-certification-wants-to-make-them-good\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"VRR monitors are becoming ubiquitous, now VESA\u2019s certification wants to make them good - Science and Nerds\" \/>\n<meta property=\"og:description\" content=\"Source: VESA, the computer display organization behind standards like the DisplayPort interface, has a new certification program that\u2019s designed to help customers find better variable refresh rate monitors. Unlike its previous HDR certification program, which measured things like peak brightness, the new Adaptive-Sync Display Compliance Test Specification (or Adaptive-Sync Display CTS) is designed specifically for […]\" \/>\n<meta property=\"og:url\" content=\"https:\/\/scienceandnerds.com\/2022\/05\/02\/vrr-monitors-are-becoming-ubiquitous-now-vesas-certification-wants-to-make-them-good\/\" \/>\n<meta property=\"og:site_name\" content=\"Science and Nerds\" \/>\n<meta property=\"article:published_time\" content=\"2022-05-02T14:38:51+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2022-05-02T14:38:52+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/scienceandnerds.com\/wp-content\/uploads\/2022\/05\/vrr-monitors-are-becoming-ubiquitous-now-vesas-certification-wants-to-make-them-good_626fecfb9399a.jpeg\" \/>\n\t<meta property=\"og:image:width\" content=\"1200\" \/>\n\t<meta property=\"og:image:height\" content=\"628\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"admin\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"admin\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"8 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\/\/scienceandnerds.com\/2022\/05\/02\/vrr-monitors-are-becoming-ubiquitous-now-vesas-certification-wants-to-make-them-good\/\",\"url\":\"https:\/\/scienceandnerds.com\/2022\/05\/02\/vrr-monitors-are-becoming-ubiquitous-now-vesas-certification-wants-to-make-them-good\/\",\"name\":\"VRR monitors are becoming ubiquitous, now VESA\u2019s certification wants to make them good - 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VESA, the computer display organization behind standards like the DisplayPort interface, has a new certification program that\u2019s designed to help customers find better variable refresh rate monitors. Unlike its previous HDR certification program<\/a>, which measured things like peak brightness, the new Adaptive-Sync Display Compliance Test Specification<\/a> (or Adaptive-Sync Display CTS) is designed specifically for variable refresh rate displays, looking out for glitches like flicker and dropped frames.<\/p>\n
Variable refresh rate (VRR) is a technology that allows a display to synchronize its refresh rate to the output of whatever device is plugged into it, reducing the appearance of visual artifacts, screen tearing, and frame pacing issues. When support for VRR first started appearing on graphics cards and monitors, it tended to be tied to specific manufacturers: G-Sync for Nvidia and FreeSync for AMD. But in 2014, VESA built native Adaptive-Sync support into DisplayPort 1.2a<\/a> based on tech provided by AMD, and now it\u2019s a standard that\u2019s cross-compatible with graphics processors from all three major manufacturers: Intel<\/a>, AMD, and Nvidia<\/a>. <\/p>\n
\nNvidia and AMD already have certification tests for their own standards<\/q><\/aside>\n<\/div>\nBoth Nvidia<\/a> and AMD<\/a> have long offered their own certification schemes for VRR displays using their proprietary standards, but it\u2019s more of a wild west when it comes to the open Adaptive-Sync standard. When Nvidia started testing Adaptive-Sync monitors back in 2019<\/a> as part of its \u201cG-Sync Compatible\u201d initiative, only 5.56 percent of the models it tested actually passed. They either didn\u2019t offer a broad enough range of refresh rates or had other image quality issues like flickering. <\/p>\n
VESA\u2019s new certification is designed to offer similar assurances about a monitor or laptop\u2019s Adaptive-Sync support. But unlike Nvidia or AMD\u2019s certifications, it\u2019s an open source industry standard, and its testing criteria are public<\/a>. <\/p>\n
\u201cThere\u2019s obviously proprietary standards from the GPU vendors, but they\u2019ve never disclosed the full extent of their tests,\u201d Roland Wooster, Intel engineer and chairman of the VESA task group that came up with its new test, tells me over a Zoom call. Look at Nvidia\u2019s website<\/a>, for example, and you\u2019ll see that it says a monitor needs to go through over 300 tests to earn itself a G-Sync logo, but it\u2019s less forthcoming about exactly what these tests are. And that\u2019s generated some confusion<\/a> over the years, particularly when it comes to criteria like \u201cLifelike HDR.\u201d <\/p>\n
\n\u201cThey\u2019ve never disclosed the full extent of their tests\u201d<\/q><\/aside>\n<\/div>\nWith its certification, VESA is testing raw Adaptive-Sync performance, rather than GPU-specific standards like FreeSync or G-Sync. For that reason, VESA expects its certification logos to often sit alongside manufacturer-specific equivalents. A G-Sync logo tells you how a monitor will perform with an Nvidia GPU, but a VESA AdaptiveSync logo can tell you how a monitor will perform with any Adaptive-Sync-capable source.<\/p>\nImportantly, VESA\u2019s Adaptive-Sync tech is only available for its own DisplayPort standard, which is used across monitors and laptops (including whenever you transmit video via USB-C). Unfortunately, it\u2019s not going to help you pick out one of the increasing numbers of TVs that offer VRR support via HDMI 2.1 where standards are even more of a wild west<\/a>.<\/p>\n
But, as well as being more public, Wooster suggests that VESA\u2019s new certification standard holds displays to a higher standard than these vendor-specific certifications. \u201cWe\u2019ve seen some monitors that have met those certifications that have flicker, that have jitter, and which don\u2019t meet the gray-to-gray specs that we have here,\u201d he says. In a follow-up email, he tells me he expects significantly less than half of the Adaptive-Sync monitors on the market to meet VESA\u2019s standards, similar to what Nvidia found<\/a> when it introduced its own certification for Adaptive-Sync displays.<\/p>\n
Under VESA\u2019s certification, there are two compliance logos that displays can earn. MediaSync is meant for monitors you might use to watch videos or use for content creation, while AdaptiveSync is aimed at gaming monitors. If their device passes these tests, manufacturers are allowed to plaster the relevant logos across the product\u2019s box, website, or wherever it thinks potential customers might see it. A display that fails the tests can\u2019t use the logo, but manufacturers don\u2019t need to disclose a failure publicly. <\/p>\n
\n\n\n\n  <\/p>\n    <\/p>\n<\/p>\n
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    The MediaSync logo, focused on video playback.<\/em><\/figcaption>Image: VESA<\/cite><\/p>\n    <\/span><\/p>\n<\/figure>\n<\/div>\n\n\n  <\/p>\n    <\/p>\n<\/p>\n
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  <\/span><\/p>\n
    The AdaptiveSync logo is meant for gaming monitors.<\/em><\/figcaption>Image: VESA<\/cite><\/p>\n    <\/span><\/p>\n<\/figure>\n<\/div>\n<\/div>\n<\/div>\nThe first of the two logos is called MediaSync. The focus here is on making sure monitors are able to play back video content \u2014 with less than 1ms of jitter \u2014 at each of the 10 major international frame rate standards (23.976, 24, 25, 29.97, 30, 47.952, 48, 50, 59.94, and 60fps \u2014 where 23.976 has often been typical for film content in America). It sounds like a simple ask, but 24fps content can have real problems when playing on 60Hz displays because the frames don\u2019t divide evenly into the refresh rate of the screen. Three-two pull down<\/a> was a common way of dealing with the problem (where the first frame is displayed twice, the second thrice, the third twice, and so on), but it can create unpleasant juddering. A MediaSync logo means a monitor can use Adaptive-Sync to avoid any such issues.<\/p>\n
The second is the AdaptiveSync logo, which is aimed at high refresh rate gaming monitors. So for starters, a monitor with an AdaptiveSync logo needs to be able to run at a maximum refresh rate of 144Hz or more at native resolution in factory default mode, and its adaptive refresh rate needs to be able to go down to 60Hz. That might not seem like a very low floor, but Wooster explains that if your frame rate drops lower, to 58fps for example, then a monitor would be expected to use frame-doubling to bring it up to 116fps and bring it back into its adaptive sync range. <\/p>\n
If a monitor can reach 144Hz, then you\u2019ll see a \u201cDisplay 144\u201d box to the right of the certification logo, but Wooster tells me that this number will reflect whatever a monitor\u2019s maximum refresh rate is \u2014 whether it\u2019s 144, 240, or 360Hz \u2014 at native resolution.<\/p>\n
\nA thorough and open approach<\/q><\/aside>\n<\/div>\nIt\u2019s not simply enough to be able to display this range of frame rates. To be certified, a monitor needs to be able to do it well. That means not showing a level of flicker that\u2019s visible to the naked eye, even when a monitor\u2019s frame rate is rapidly changing. It means not dropping frames \u2014 which can happen when a monitor provides an input with support for higher frame rates than a panel actually supports. <\/p>\n
VESA is also taking a detailed approach to how it measures response time, or the time it takes for a monitor\u2019s pixels to update. Across the industry, it\u2019s common to see this expressed as a \u201cgray to gray\u201d response time, or roughly the time it takes for a pixel to change from one shade of gray to another. If response times are too slow, monitors can exhibit \u201cghosting,\u201d where the remains of a previous image are still visible on a screen as the pixels struggle to keep up. In order to get an AdaptiveSync logo, a monitor will have to have a response time of under 5ms.<\/p>\n5ms might seem high compared to the 1ms response times that a lot of manufacturers claim their monitors are capable of. But in real-world tests, like those conducted by Rtings<\/em><\/a>, response times are generally a lot higher than 1ms. Rtings<\/em> generally classes any response time of under 6ms as a \u201cgood value.\u201d <\/p>\n
Manufacturers like to make these claims about 1ms response times because they\u2019re not being as rigorous with their testing as independent reviewers like Rtings<\/em> or VESA\u2019s test centers. Some manufacturers, Wooster says, might perform a number of gray-to-gray changes and then cherry-pick the best result. Others might benefit from the fact that a warmer panel can respond markedly quicker than a cold one. Overdrive might be used to achieve a faster response time on paper but at the expense of ugly visual artifacts. <\/p>\n
\nThe first certified monitors will be added to VESA\u2019s list today<\/q><\/aside>\n<\/div>\nVESA\u2019s solution is to measure a variety of different gray-to-gray transitions (20 in total) and to take an average, rather than cherry-picking the best result. Tests are conducted with an ambient temperature of between 22.5 and 24.5 degrees Celsius (72.5 \u2013 76 Fahrenheit). Monitors are given time to reach a stable temperature first, and limits are placed on how much overshoot and undershoot a monitor is able to show and still pass.<\/p>\nWooster declined to say how many VESA members he expects to pay for their devices to eventually be MediaSync or AdaptiveSync certified (the fee is the same whether a display passes or fails), but the first certified monitors should appear on VESA\u2019s website starting today. He points toward the number of devices that currently carry one of VESA\u2019s HDR certifications<\/a> as an example of the amount of monitors and laptops we might eventually see carrying the new AdaptiveSync logos. <\/p>\n
Considering VESA\u2019s formidable list of members<\/a> from across the display industry, these little orange and blue logos could quickly become an essential mark of quality when buying your next monitor or laptop.<\/p>\n<\/div>\n

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Source: https:\/\/www.theverge.com\/2022\/5\/2\/23053113\/variable-refresh-rate-monitors-vrr-vesa-certification-compliance-test-specification<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"
Source: VESA, the computer display organization behind standards like the DisplayPort interface, has a new certification program that\u2019s designed to help customers find better variable refresh rate monitors. Unlike its previous HDR certification program, which measured things like peak brightness, the new Adaptive-Sync Display Compliance Test Specification (or Adaptive-Sync Display CTS) is designed specifically for […]<\/p>\n","protected":false},"author":1,"featured_media":4861,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"nf_dc_page":"","om_disable_all_campaigns":false,"pagelayer_contact_templates":[],"_pagelayer_content":"","_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[12,8],"tags":[13],"class_list":["post-4860","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-gaming","category-technology","tag-gaming"],"yoast_head":"\nVRR monitors are becoming ubiquitous, now VESA\u2019s certification wants to make them good - Science and Nerds<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/scienceandnerds.com\/2022\/05\/02\/vrr-monitors-are-becoming-ubiquitous-now-vesas-certification-wants-to-make-them-good\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"VRR monitors are becoming ubiquitous, now VESA\u2019s certification wants to make them good - Science and Nerds\" \/>\n<meta property=\"og:description\" content=\"Source: VESA, the computer display organization behind standards like the DisplayPort interface, has a new certification program that\u2019s designed to help customers find better variable refresh rate monitors. 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