SanDisk Extreme 64GB microSD, microSDHC, microSDXC, 4K UHD- SDSQXA2-064G-GN6MA, A1/A2

Purchased this for my GoPro Hero 4 silver and couldn't be happier! Seems to be working great so far and offering quite a good read speed on my MacBook Pro. I have only used SanDisk Extremes for my GoPro and they have all given me no problems, plan on buying more of these too. Thanks for a reliable and fast product. Also, please do your research before purchasing micro SD cards as some people are buying SanDisk Ultras for their GoPros. These cards ARE recommended but the other cards are not. From GoPro's website: "SanDisk Extreme/Extreme Plus/Extreme Pro UHS Video Speed Class 30 (V30) - ≥32GB". This card is the ONLY card for ALL GoPros.

Delivery from the seller was fast and the item received was as expected. No problems. This is the SanDisk Extreme microSD 128GB card (160 MB/s read, 90 MB/s write). A2 for faster performance. It is 4K UHD and drone compatible. It does not have U3 on the front of the packaging, but it IS ON THE BACK OF THE PACKAGING. So it is U3. It is as advertised and works well to serve the purpose of recording 4K video on DJI MAVIC 2 Zoom quadcopter (drone). In contrast, the SanDisk Extreme PLUS 128GB has a 170 MB/s read and 90 MB/s write. It is also compatible, has the U3 on the front of the packaging as well as on the back.

Looking to expand your device's storage without compromising on performance? Enter the SanDisk Extreme 128GB – a game-changer in the world of memory cards. Let me paint a picture for you: You're on a breathtaking adventure, capturing every moment with your smartphone or action camera. With this microSD card, you won't miss a beat. Its generous 128GB capacity means you can snap away to your heart's content without worrying about running out of space. But what really sets this card apart is its reliability. Whether you're hiking in the mountains, surfing at the beach, or simply enjoying life's everyday adventures, this microSD card is built to withstand it all. No need to fret about water, temperature, or shocks – it's got you covered. And let's talk about speed. With lightning-fast read and write speeds, you can transfer your photos and videos in the blink of an eye. Plus, its compatibility with 4K Ultra HD video means you can capture every detail with stunning clarity. So, whether you're a photography enthusiast, a tech-savvy traveler, or just someone who wants to free up space on their device, the SanDisk Extreme microSD card is the perfect companion. Trust me, once you experience its performance and reliability, you'll wonder how you ever lived without it.

I have been using scandisk cards for years in my digital cameras. This card was purchased for my MavicAir drone. It has worked great so far and is fast enough to record 4k video. I only shoot at 2.7k so the 64GB is fine. If you are planning at shooting at 4k definitely get a larger capacity SD card or buy multiples.

So I bought this to upgrade from my iPod Classic, because it wouldn't support hi-res files and I couldn't accept downgrading my collection from lossless to 256 (that player will continue to live in my car). 1st impression was how small and light it is, causing me concern about durability (it is about as heavy as a pack of cards) - I'm hoping the case I bought and screen cover make me feel more comfortable with it. 2nd impression was the interface - it is OK. Not perfect, but fairly fast. It is certainly full of features, and quite logical, but my gripe is the fragmented 'back' feature vs. the iPod Classic. Essentially you can't travel back through set menus using the back button, it takes you back to the last viewed menu, vs a hierarchy. Having varying options to manage the sound is welcome, it has a good EQ with upsampling options for MP3s and 'environment' controls. It is also nice to be able to search through hi-res audio files as an option. For some reason it doesn't seem to load all of my album artwork, or take the file-naming structure as well as other devices (leaving some blank and with an unknown artist), not sure what to do about that... For some reason the in-line controls on my earbuds don't work, meaning that I have to use the controls on the device. My higher end headphones don't have a line control. It is a minor gripe, but I'll get over it. 3rd impression - the sound - OK, so I was relatively happy with the iPod Classic, I knew it was holding back on the sound, but it was much better than using my iPhone (especially with their new lightening connection). I play my music collection through a fairly high-end vinyl system and my digital through a Bluesound processor, all out through a vintage Sansui and Mcintosh speakers - so I didn't expect much of an enlightening experience running my files through this little player (I'm using B&O in-ear and a reference pair of ATH cans), initially I thought it was a little too bright (a consequence of the reclaimed higher end of the files) but in tweeting the EQ (+3, +2, 0, +2, +2, +3) a real fullness appeared, and once again I was blown away by how much detail is lost in playing music through lesser devices. *warning, this will reveal poor files to be fairly unenjoyable, and unwelcomely harsh (play with the DSEE HX option to find your preference). It is an intimate listening experience and I find myself seeking a lower volume than I would usually use - I think this is because it is such a revealing little device that I'm overloaded by the listening experience, but that is a good thing, a very good thing! The background is as 'black' as the file itself, meaning this device doesn't appear to add any noise at all, revealing the inherent hiss in the production process of each file, but if there is none then it is quiet and pleasing. Bass is full, punchy and rounded, vocals and breathy and trailing with intimate detail, pacing appears to be fine (though my listening is lagging as I am hearing things that I haven't heard before, causing me to lose tracking as I listen), high end is sparkly and attention grabbing, sound staging is nicely wide (though it also depends on your headphones). Loading files is fairly easy, I dropped the Sony-installer and just went with dragging and dropping my music directly into the SD card (just make sure you format it in the device before using it). Load times were pretty darn quick, and the cataloging process is also quick. The device comes with 3 hi-res songs already loaded, and though they are not my style they give a very good example of the sound quality of the device. I've not yet filled up the SD card, and I don't know if it will start to stutter as the card gets filled up, but for now it is good, and I'm happy to have dropped the physical drive from the iPod. - So, I'm giving this 4 stars because nothing is perfect, and I'm aware there are better processing units out there (just for a greater price), but value for money this unit is brilliant, and sound wise. I've not tried using it as a DAC or the Bluetooth feature, though I would imagine they are decent. For the price of the device you would be a fool to go with anything else. Sony are well established in the field, and have clearly put effort into producing this player. I'm just disappointed that I didn't get one earlier.

perfecto

Great storage. Have filled it up and erased it over and over again several times in my GoPro with out a problem.

It still amazes me how storage capabilities have changed so much over the last two decades. This is a very compact card with a huge amount of storage (not even the largest, but plentyful) and a very good read/write speed. It is perfect for smartphones and action cameras due to its size and capabilities. But since it comes with an SD adapter. It will fulfill most of your storage needs. I have found SanDisk is a great brand overall.

Sandisk are leaders in making memory cards. When it comes MicroSDs and SDs, i never stray away from buying from Sandisk. They are absolutely the most trustworthy digital memory company when i need storage in my drones, gopros and other cameras. I use this card for both my GoPro Hero 7 Black and the DJI Mavic Air and i have also tried this on a DJI Spark. The former two write at 4k, and I have never had any write issues or read issues with a Sandisk. Even better is that this is a Sandisk Extreme which means the read speed is fantastically fast. I have stored up to the full 64gb on this card, with no issues. Whereas in the past when i have used Toshiba or other brands, the memory card can get a bit glitchy when almost full. Sandisks are reliable, and will as long as they keep producing high quality products.

Ho acquistato questa microSD in offerta ad € 32,99, un ottimo prezzo, quindi, e credo di aver fatto un ottimo acquisto in quanto volevo una scheda non solo della giusta capienza (ce l'avevo già una microSD da 64GB), almeno per le mie esigenze, ma anche molto veloce in prospettiva di utilizzarla in uno smartphone più prestante di quello che ho adesso. Si tratta della seconda miglior microSD UHS-I di marca SanDisk in commercio, poiché la Extreme PLUS raggiunge i 90MB/s in scrittura ed i 100MB/s in lettura, mentre la Extreme PRO di nuova generazione non è più UHS-I bensì UHS-II, quindi ASSOLUTAMENTE INUTILE su uno smartphone: questa Extreme riesce a raggiungere i 60MB/s in scrittura ed i 100MB/s in lettura, quindi stiamo parlando di valori eccellenti, molto difficilmente raggiungibili su un telefono: va specificato, però, che se si acquista il taglio di memoria da 128GB allora si avrà una velocità in scrittura di 90MB/s, come la Extreme PLUS. Inutile dire che per foto in alta definizione e video sia in FULL HD che in 4K UHD, sia a 30 fps che a 60 fps questa microSD è assolutamente una delle migliori che si possano utilizzare, in quanto non avrà mai incertezze o rallentamenti o difficoltà di alcun tipo Inutile parlare, poi, dell'impermeabilità, della resistenza alle temperature, agli urti e ai raggi X perché queste sono caratteristiche comuni a tutte le microSD. Di recente sono state aggiunte delle nuove sigle alle microSD, come quella composta dalla lettera V (video) seguita da un numero che corrisponde alla velocità minima di scrittura sequenziale: V30, quindi, in questo caso vuol dire una velocità di scrittura minima di 30MB/s, anche se ciò risulta essere una sovrapposizione del simbolo U3, che significa la stessa cosa. Per chi si stesse chiedendo cos'è, invece, il simbolo A1 impresso sulla scheda, nel sito SanDisk è specificato che "Con classificazione A1, questa scheda SanDisk Extreme® microSD è ottimizzata per le app e garantisce un avvio e prestazioni rapidi delle applicazioni per una migliore esperienza del tuo smartphone." Per ulteriori specifiche al riguardo, riporto un estratto pubblicato sul sito HARDWARE UPGRADE, dove è specificato che "è uno standard che SanDisk ha creato assieme ad altri produttori per certificare la velocità della memoria nell'uso all'interno dei telefonini Android: le app odierne, infatti, richiedono sempre più spazio e spesso c'è l'esigenza di spostarle sulla schedina SD ma se non si possiede una scheda abbastanza veloce le app rallentano: questo nuovo standard è stato creato apposta per garantire che una scheda che lo adotta funzioni al meglio come storage interno dello smartphone: da Android 6.0 Marshmallow in poi, infatti, è possibile espandere lo storage di uno smartphone tramite una schedina SD esterna facendola vedere al sistema operativo come un unico volume di memoria, in modo da poterlo utilizzare come se fosse la memoria di sistema." Si tratta dell'"Adoptable Storage, ossia memorie esterne che possono essere adeguatamente formattate e rilevate dal'OS come una estensione senza soluzione di continuità della memoria di storage interna. In questo caso contano molto le prestazioni delle schede utilizzate, in quanto accesso, lettura e scrittura condizionano molto la velocità operativa delle applicazioni che risiedono sulla memoria esterna. App Performance Class A1 certifica schede con le seguenti prestazioni: Random Read Input-Output access Per Second, ovvero accessi In e Out Random al Secondo (IOPS) pari a 1500, Write (scrittura) IOPS pari a 500, e ciò garantisce che le app, in tal modo, non vengano rallentate come potrebbe avvenire con una scheda "normale"." Allego, alla recensione, lo screenshot relativo al benchmark CrystalDiskMark che ho effettuato collegando la scheda ad una porta USB 3.0 del PC tramite il lettore di schede Kingston modello FCR-HS4, acquistato anch'esso qui su Amazon; allego, inoltre, i valori fatti registrare dalla scheda dopo averla invece installata nello smartphone, un Huawei P8, e dopo aver effettuato i due benchmark "A1 SD Bench" e "AndroBench", entrambi scaricabili dal Play Store. Per concludere, io ho preso questa scheda davvero veloce da 64GB perché, proprio nei giorni in cui ho dato un'occhiata su Amazon alla ricerca di una microSD veloce e della capienza giusta (almeno per me), ho trovato questa microSD in offerta ad un prezzo allettante, la quale si è rivelata essere una scheda ad alta/altissima velocità, perfettamente idonea per smartphone di ultimissima generazione (e non solo), anzi, forse pure sovrabbondante per quanto riguarda le prestazioni, e quindi la consiglio a chiunque voglia espandere la memoria di uno smartphone capace di fare foto in altissima definizione o di girare filmati anche in 4K UHD: se, poi, non si ha fretta di effettuare l'acquisto si può sempre aspettare una delle offerte lampo che, periodicamente, appaiono su Amazon e risparmiare sul costo di acquisto. A1 SD Bench su HUAWEI P8 Sequential Read → 78.05MB/s Sequential Write → 44.65MB/s Random Read → 19.82MB/s Random Write → 5.39MB/s AndroBench su HUAWEI P8 Sequential Read → 62.43MB/s Sequential Write → 35.91MB/s Random Read → 10.14MB/s, 2596.31 IOPS (4KB) Random Write → 4.06MB/s, 1040.91 IOPS (4KB)

Ordered two pieces of micro sdxc extreme U3 A1 V30 64 gb. Strange thing - the A1 class on the box does not match A2 on the card. At first thought that it was a good quality fake. Later sandisc support proved originality of A2 card. Overall happy with puchase. Card is working well in GoPro session 5.

Increíble tarjeta microsd. La utilizo en mi GoPro 5 y funciona a la perfección y la velocidad es bastante buena para los videos 4k que he grabado en ella. No he tenido ningún problema hasta ahora. Recomiendo comprar esta tarjeta microSD aquí porque en las tiendas es mucho más cara. ¡Si quieres una tarjeta microSD fiable, elija está! Tiene 64 GB y funciona perfectamente con mi GoPro 5.

Tudo certo, o cartão veio em perfeitas condições, esta funcionando bem. A encomenda chegou muito rápido por sinal. recomendo