{"id":112356,"date":"2025-07-17T12:00:00","date_gmt":"2025-07-17T16:00:00","guid":{"rendered":"https:\/\/www.adorama.com\/alc\/?p=112356"},"modified":"2025-07-18T10:44:03","modified_gmt":"2025-07-18T14:44:03","slug":"sd-card-specs-explained","status":"publish","type":"post","link":"https:\/\/www.adorama.com\/alc\/sd-card-specs-explained\/","title":{"rendered":"SD Card Specs Explained"},"content":{"rendered":"\n<p>No matter what kind of camera you use, an <a href=\"https:\/\/www.adorama.com\/l\/Computers\/Digital-Storage-and-Duplication\/Memory-Cards\" target=\"_blank\" rel=\"noreferrer noopener\">SD card<\/a> is an essential component that houses your precious images and videos. Despite the importance of the SD card, very few creators know about the different SD card specs and what they mean. While most SD cards will work well enough to store your images, knowing all the various options on the market is essential when <a href=\"https:\/\/www.adorama.com\/alc\/picking-the-right-sd-card-what-do-the-numbers-mean\/\" target=\"_blank\" rel=\"noreferrer noopener\">picking out the best SD card<\/a>. In this guide, we\u2019ll cover everything you need to know about SD cards for creators.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">What is an SD Card?<\/h2>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"900\" height=\"675\" src=\"https:\/\/www.adorama.com\/alc\/wp-content\/uploads\/2025\/07\/Photo-by-Samsung-Memory-on-Unsplash-2.jpg\" alt=\"female adventure photographer smiles as she holds SD card and camera tripod\" class=\"wp-image-112366\" srcset=\"https:\/\/www.adorama.com\/alc\/wp-content\/uploads\/2025\/07\/Photo-by-Samsung-Memory-on-Unsplash-2.jpg 900w, https:\/\/www.adorama.com\/alc\/wp-content\/uploads\/2025\/07\/Photo-by-Samsung-Memory-on-Unsplash-2-300x225.jpg 300w, https:\/\/www.adorama.com\/alc\/wp-content\/uploads\/2025\/07\/Photo-by-Samsung-Memory-on-Unsplash-2-120x90.jpg 120w\" sizes=\"auto, (max-width: 900px) 100vw, 900px\" \/><figcaption class=\"wp-element-caption\">Photo by Samsung Memory on Unsplash<\/figcaption><\/figure>\n\n\n\n<p>Many electronic devices use a Secure Digital, or \u201cSD\u201d card, to increase storage capacity. Manufacturers classify SD cards into three categories based on their capacity. A standard SD card goes up to 2 GB and is usually far too small for any type of creator. A High-Capacity SD Card, or an SDHC, can range from 4 GB to 32 GB. They classify anything larger than 32 GB as an Extended Capacity SD card, or SDXC.<\/p>\n\n\n\n<p>Picking out the right capacity is one of the first steps to choosing an SD card. For most creators, 16 GB would be the bare minimum, but anyone using a camera with more than 20 megapixels, or those capturing video, should opt for at least 64 GB. Some creators even go with 512 GB or higher, depending on how long they want to go without offloading their card.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">SD Card Specs Explained<\/h2>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"1013\" height=\"675\" src=\"https:\/\/www.adorama.com\/alc\/wp-content\/uploads\/2025\/07\/Photo-by-Erik-McLean-on-Unsplash.jpg\" alt=\"man holds SD card before he places it in his photography gear kit\" class=\"wp-image-112367\" srcset=\"https:\/\/www.adorama.com\/alc\/wp-content\/uploads\/2025\/07\/Photo-by-Erik-McLean-on-Unsplash.jpg 1013w, https:\/\/www.adorama.com\/alc\/wp-content\/uploads\/2025\/07\/Photo-by-Erik-McLean-on-Unsplash-300x200.jpg 300w\" sizes=\"auto, (max-width: 1013px) 100vw, 1013px\" \/><figcaption class=\"wp-element-caption\">Photo by Erik McLean on Unsplash<\/figcaption><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\">Write Speed<\/h3>\n\n\n\n<p>The write speed is usually indicated on the front of the card by a number by itself or within a \u201cU.\u201d A number of 4, 6, or 10 corresponds to the minimum write speed of the card in MB\/s. If your card has the number 1 or 3 within a U, this means you have a U1 or U3 speed-class rating. U1 cards write at a minimum of 10 MB\/s, while U3 cards write at a minimum of 30 MB\/s.<\/p>\n\n\n\n<p>Oftentimes, the write speed is listed on the front of the card as well, so why is there redundancy with the manufacturer printing the speed-class rating on the front of the card? The write speed on the front of the card is usually the fastest speed possible by the card. Looking at the speed-class rating is always going to give a more reliable description of the card since this is the minimum speed.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Read Speed<\/h3>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"900\" height=\"675\" src=\"https:\/\/www.adorama.com\/alc\/wp-content\/uploads\/2025\/07\/Photo-by-Samsung-Memory-on-Unsplash-1.jpg\" alt=\"SD card being inserted into laptop\" class=\"wp-image-112368\" srcset=\"https:\/\/www.adorama.com\/alc\/wp-content\/uploads\/2025\/07\/Photo-by-Samsung-Memory-on-Unsplash-1.jpg 900w, https:\/\/www.adorama.com\/alc\/wp-content\/uploads\/2025\/07\/Photo-by-Samsung-Memory-on-Unsplash-1-300x225.jpg 300w, https:\/\/www.adorama.com\/alc\/wp-content\/uploads\/2025\/07\/Photo-by-Samsung-Memory-on-Unsplash-1-120x90.jpg 120w\" sizes=\"auto, (max-width: 900px) 100vw, 900px\" \/><figcaption class=\"wp-element-caption\">Photo by Samsung Memory on Unsplash<\/figcaption><\/figure>\n\n\n\n<p>The read speed is generally indicated on the front of the card in MB\/s. A faster read speed means you can transfer data faster, which isn\u2019t too important to most creators. Speeds are usually quick enough that the difference may be a few more minutes to upload your photos or videos.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Video Speed Class<\/h3>\n\n\n\n<p>Manufacturers mark five video speed classes with the letter V followed by a number. The number after the V corresponds to the write speed of the video in MB\/s. This is important for capturing video, especially if you\u2019ll be shooting in 4K or 8K. V30 SD cards are fast enough to write 1080p video, while V60 can shoot up to 4K, and V90 can shoot in 8K. If you\u2019re shooting at higher framerates, you may need to go up a speed class to capture the footage you\u2019re after.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">How to Pick the Best Memory Card<\/h2>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"900\" height=\"675\" src=\"https:\/\/www.adorama.com\/alc\/wp-content\/uploads\/2025\/07\/Photo-by-Samsung-Memory-on-Unsplash.jpg\" alt=\"a woman holds an SD card and her camera\" class=\"wp-image-112369\" srcset=\"https:\/\/www.adorama.com\/alc\/wp-content\/uploads\/2025\/07\/Photo-by-Samsung-Memory-on-Unsplash.jpg 900w, https:\/\/www.adorama.com\/alc\/wp-content\/uploads\/2025\/07\/Photo-by-Samsung-Memory-on-Unsplash-300x225.jpg 300w, https:\/\/www.adorama.com\/alc\/wp-content\/uploads\/2025\/07\/Photo-by-Samsung-Memory-on-Unsplash-120x90.jpg 120w\" sizes=\"auto, (max-width: 900px) 100vw, 900px\" \/><figcaption class=\"wp-element-caption\">Photo by Samsung Memory on Unsplash<\/figcaption><\/figure>\n\n\n\n<p>Once you understand the settings on an SD card, it\u2019s time to pick the best card for you. The first thing you should consider is whether or not you\u2019d like to capture video. If so, you\u2019ll need to ensure you have the proper speed class to capture the resolution of the video you desire. Most video creators recommend a V90 card since you may shoot at higher resolutions or faster frame rates.<\/p>\n\n\n\n<p>If you don\u2019t shoot video, you don\u2019t have to worry about the video speed class, but you should still consider the card&#8217;s general speed class. Faster is usually better, as it allows your camera to write images quicker, allowing you to shoot more photos in a burst before reaching the buffer.<\/p>\n\n\n\n<p>Before picking out what speed, ensure you check the maximum write speed of your camera. It doesn\u2019t do you any good to have a memory card with a write speed of up to 300 MB\/s when your camera can only write 50 MB\/s. It\u2019s recommended to pick up a card with a write speed that matches or barely exceeds the read speed of the camera since anything faster is more expensive and won\u2019t have any benefit.&nbsp;<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"683\" src=\"https:\/\/www.adorama.com\/alc\/wp-content\/uploads\/2025\/03\/WPPI-2025-article_5-1024x683.jpg\" alt=\"Photographer working with young wedding couple in studio, closeup\" class=\"wp-image-110254\"\/><\/figure>\n\n\n\n<p>Finally, consider the necessary capacity. If you\u2019re a wedding photographer who shoots thousands of photos in one event, you need a much larger capacity than a studio shooter uploading their images as they go. 64 GB is a good place to start for most creators, but I\u2019d recommend at least 128 GB if you capture video.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Why SD Card Specs Should Be Understood<\/h2>\n\n\n\n<p>Whether you\u2019re capturing burst images, 4K video, long event days, or simply expanding storage, there is much to learn about SD cards. Each type of creator needs to specifically consider UHS class, capacity, and both read and write speed to select the best SD for their content creation. But once you have the right memory card picked out, it\u2019ll last you for years to come. With the help of this guide, hopefully, you now feel fully equipped to pick out the best memory card on the market.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Despite the importance of the SD card, very few creators know about the different SD card specs and what they mean. Read about it here!<\/p>\n","protected":false},"author":11111175,"featured_media":112370,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[21,17796],"tags":[11863],"class_list":["post-112356","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-gear","category-storage","tag-sd-cards"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.4 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>SD Card Specs Explained - Adorama<\/title>\n<meta name=\"description\" content=\"Despite the importance of the SD card, very few creators know about the different SD card specs and what they mean. 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