SanDisk 256GB Extreme microSDXC UHS-I Memory Card with Adapter — Up to 190MB/s, C10, U3, V30, 4K, 5K, A2, Micro SD Card — SDSQXAV-256G-GN6MA
- Save time with card offload speeds of up to 190MB/s powered by SanDisk QuickFlow Technology (Up to 190MB/s read speeds, engineered with proprietary technology to reach speeds beyond UHS-I 104MB/s, requires compatible devices capable of reaching such speeds. Based on internal testing; performance may be lower depending upon host device interface, usage conditions and other factors. 1MB=1,000,000 bytes. SanDisk QuickFlow Technology is only available for 64GB, 128GB, 256GB, 400GB, 512GB, and 1TB capacities. 1GB=1,000,000,000 bytes and 1TB=1,000,000,000,000 bytes. Actual user storage less.)
- Pair with the SanDisk Professional PRO-READER SD and microSD to achieve maximum speeds (sold separately)
- Up to 130MB/s write speeds for fast shooting (Based on internal testing; performance may be lower depending upon host device interface, usage conditions and other factors. 1MB=1,000,000 bytes.)
- 4K and 5K UHD-ready with UHS Speed Class 3 (U3) and Video Speed Class 30 (V30) (Compatible device required. Full HD (1920×1080), 4K UHD (3840 x 2160), and 5K UHD (5120 X 2880) support may vary based upon host device, file attributes and other factors. See HD page on SanDisk site. UHS Speed Class 3 (U3) designates a performance option designed to support real-time video recording with UHS-enabled host devices. Video Speed Class 30 (V30), sustained video capture rate of 30MB/s, designates a performance option designed to support real-time video recording with UHS-enabled host devices. See the SD Association’s official website.)
- Rated A2 for faster loading and in-app performance (A2 performance is 4000 read IOPS, 2000 write IOPS. Results may vary based on host device, app type and other factors)
Last updated on 29 марта, 2023 22:29 Details
SanDisk 256GB Extreme microSDXC UHS-I Memory Card with Adapter — Up to 190MB/s, C10, U3, V30, 4K, 5K, A2, Micro SD Card — SDSQXAV-256G-GN6MA
$25
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Specification: SanDisk 256GB Extreme microSDXC UHS-I Memory Card with Adapter — Up to 190MB/s, C10, U3, V30, 4K, 5K, A2, Micro SD Card — SDSQXAV-256G-GN6MA
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Отзывы (13)
13 reviews for SanDisk 256GB Extreme microSDXC UHS-I Memory Card with Adapter — Up to 190MB/s, C10, U3, V30, 4K, 5K, A2, Micro SD Card — SDSQXAV-256G-GN6MA
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MigliorSoluzione –
Ho acquistato questa Sandisk Extreme U3 V30 (versione da 32gb) al buon prezzo di 14 euro circa. Prima dell’acquisto di questa sd ne ho valutate anche altre andando a controllare le varie caratteristiche che le compongono e alla fine ho scelto questa per l’ottimo rapporto qualità/prezzo.
CHIARIMENTI SULLE SIGLE
Le sd sono piene di sigle o parametri che identificano in generale la qualità del prodotto perciò scrivo una piccola guida, semplificata, su cosa significano queste sigle.
— SDHC: identifica la capienza delle schede. Una scheda da 32gb come questa è sdHC. Una da 64gb viene indicata come sdXC.
— CLASS: questa è una vecchia classificazione, ormai superata, e identificava la velocità di scrittura minima della sd. Class10 (10mb/s) class6 (6 mb/s) ecc.
— UHS-I, UHS-II: queste due sigle identificano il nuovo standard da prendere in considerazione quando acquistiamo questi prodotti. Uhs-I supporta velocità di scrittura fino a 104 mb/s, mentre uhs-II fino a 312 mb/s. L’acquisto dell’una o dell’altra dipende dal dispositivo nel quale andrete ad inserirla (es. fotocamera) e quindi dal tipo di bus compatibile dalla fotocamera in questo caso. Se un dispositivo è di tipo uhs-I non supporterà le velocità del uhs-II se inserite una sd con questo standard.
— U1 U3: diciamo che questa è una sigla molto importante. Sulla scheda di trova una sorta di U con dentro il numero 1 o 3. Indicano la velocità minima di scrittura di 10mb/s o 30mb/s. In linea generale U1 è adatta per video hd e fullhd. U3 è indicata anche per video in 4k. Vi consiglio di prendere la U3!
— V30, V60 ecc.: nuovo standard che si riferisce alla velocità minima garantita in una registrazione video. V30 equivale a 30mb/s e così via. In generale V30 è adatta per registrazione di video in 4k. Con V60 V90 arriviamo anche agli 8k.
— A1 e A2: è un nuovo standard indicato per gli smartphone android nei quali è possibile installare app anche su memoria esterna. In particolare le sd con questa sigla svolgono molte più operazioni al secondo rispetto ad altre tradizionali e ciò si traduce in velocità molto maggiore, per esempio, quando si avvia un app. Se cercate su youtube “Sandisk Extreme A1, test di velocità apertura app” troverete un video dove mostra la differenza netta di velocità tra un sd standard e una A1. A2 ha prestazioni ancora più elevate.
SANDISK EXTREME U3 v30 A1
Dopo questi piccoli chiarimenti sulle sigle, facendo un rapporto con la sandisk extreme in questione possiamo renderci conto che è una sd di tutto rispetto in quanto:
— è di tipo UHS-I U3, quindi velocità minima di scrittura a 30mb/s rispetto a tante altre U1 che hanno un costo simile. Sulle GoPro per un funzionamento affidabile sono consigliate sd U3.
— È di tipo V30: quindi in registrazione riesce a sostenere una velocità minima di 30mb/s rispetto a tante altre, ad un prezzo simile, che non hanno proprio questa sigla.
— A1: ideale se dovete utilizzarla su uno smartphone android per i motivi citati sopra nella guida.
In sostanza, questa sd dal costo di 14 euro racchiude molte specifiche interessanti ad un prezzo contenuto. Volendo esiste anche la classica SD Samsung evo da 32gb al costo di 8 euro circa però è una U1 (non U3), non V30 e non A1.
Viene consigliate anche da GoPro tra le sd adatte per la HERO7.
Per quanto riguarda il test di lettura e scrittura, ho testato il prodotto sul mio notebook hp pavilion dv6 tramite lo slot dedicato e i risultati sono:
Lettura: 87 mb/s e 86mb/s
Scrittura: 50mb/s e 63mb /s
Lascio screen dei test. Facendo una ricerca in internet, altri test affermano che sono riusciti a toccare picchi di 99,5mb/s in lettura e addirittura 72,2 mb/s in scrittura, superando il limite dichiarato dalla casa produttrice di 60mb/s.
Faccio presente, inoltre, che questo tipo di scheda è:
— immune ai rivelatori a raggi X aeroportuali.
— Impermeabile IEC 529 IPX7
— Resistente alle temperature: -25 ºC a +85 ºC per 100 cicli (equivalenti a 28 ore).
— Resistenti a urti e vibrazioni: tollerano urti sino a 500 G
Spero di esservi stato utile, ciao!
Bruce –
This is the first time I’ve bought a SanDisk Extreme micro SD. I have a couple of SanDisk Ultra SDs. The Extreme outperforms them all in read and write speeds. Highly recommended.
Z –
It arrived and installed in my tablet for increased storage. The tablet recognized the card and size. Just as a precaution, the physical size of the card makes installing a bit challenging since it fits in a little tray like a sim chip in a phone. Large fingers makes it difficult an the sd card must align up to the slot otherwise the card will catch on the frame of the tablet and the SD card could be damaged. It took several tries to get it positoned for installing.
John Thompson –
I bought this for use with a Kindle Fire. it works great. The only issue is that sometimes after reboot the Kindle takes a bit too long to recognize it, and I temporarily see a warning about it that asks if I want to forget the card. it goes away after a moment, but it’s annoying. Yes, this size of SD card is supported by the model of Kindle I use it with.
Secret Shopper –
I bought this one for the second time the first one was a correct 1TB. I went to format the second one I purchased at it said storage was 30GB. Will return hopefully the next one will be the right size.
Mark Kessinger –
I got this to use with my new Sony a7ii on a train trip shooting photos from Amtrak observation cars as I circle the country. Ten thousand miles and 25 k photos in two months and it is working just fine! Very pleased. Feel confident with it.
Benoît –
Nice & quick card.
Getting around 90mb read and 70mb seq writes on my Latitude 5285 2-in-1.
Write speed @4k are higher than some other cards.
The screengrab of CrystalDiskMark 5.2.0 shows the other benchmark numbers.
A. Watson –
I have been having trouble with my GoPro Hero 4 Black. It stops recording and files need repairing, etc. Really annoying stuff.
After some Googling, it turns out the 64GB Sandisk Ultra XC1 microSD card I’d been using WAS THE PROBLEM. Not campatble. If only I had known about that before…
Anyway, bought this 32Gb card, recommended for GoPro and other action cams, and everything works perfectly. It’s saved my sanity and my video records. Cheap to buy too and ordering with Amazon Prime I know I won’t get a fake card.
Dennis –
My Samsung phone can handle a 1TB micro SD card. I figured to get one so it would take a long time to run out of storage. In the long run it would save money. I wouldn’t have to keep buying sd cards to gradually increase storage when I get low on storage space. The only problem is that my phone reads it only 0.93TB even after formatting the card. Which is fine because there needs space for the sd card. With almost 2,000 songs (15.25GB), 659mb of images, 1.56GB of videos I only used only 1% of the 1TB sd card of storage space. If your phone can handle a 1TB sd card then this is the card to get.
thaop5 –
Plugged it into a microSD to USB mini stick and tried to copy over 160 gig. Received error after every 2-3 gig copied.
Was getting pissed off!
Took the 1t san disk out and placed it into a FULL size microSD to USB stick.
Copied over the same 160G data.
WORKED flawlessly
So far so good!
Well update later when the 1T is fully copied onto
Pastor B –
I tend to fill up all the available memory space on my devices, so I really appreciate the ability to add memory to my phone (or anything else, actually), but especially my phone. I use an app that stores all of my encrypted messages as backups on my phone (up to 12GB now), and it backs them up on a daily basis, keeping the older copies of the backup. That adds up to serious memory use after a short time! The only thing to do it to have to delete the old ones every few days or give up current backups…or get a new 128 GB SD card to put in the phone. So, when I saw this SanDisk 128GB Extreme microSDXC, I ordered it.
Whenever I get a new SD card the first thing I do is to fill it up with large files. That tells me two important things: 1. The write speed of the drive or card (in this case averaging about 30 MB/sec – you need their card reader for the much faster advertised speeds), and 2. Whether or not it’s really the size it claims to be. I’ve bought four different SD cards/Thumb drives that claimed to be huge (1 TB) but were actually 32 GB drives that had the hardware on the card jimmied so as to appear to be larger. The drives would appear to copy the files correctly, but anything over the actual capacity was not really copied, only its name. I didn’t expect that there would be any difficulty with this card (it being SanDisk and sold by Amazon), and there wasn’t. I’m glad to say that this 128 GB SD Card actually stores the correct number of bytes (about 117 GB which is really what the 128 GB means – advertising! Yikes!). I just popped it into my phone and formatted it as an internal drive (I could have not formatted it and just used it as storage, but I prefer that it be integrated more closely with the phone).
So, I’m very glad that I got this SanDisk 128GB card. It’s everything that it claims to be!
MigliorSoluzione –
Compte tenu de mon métier (je suis photographe et opérateur de prises de vues aériennes) je suis un peu pointilleux quant à ces petites bêtes qui nous permettent de stocker une tonne de données mais aussi… de perdre des heures de boulot d’un coup si par malheur on achète des cartes de mauvaise qualité.
Avec celles-là… ma foi… ce n’est que du bonheur ! Le full HD (1920 x 1080) est parfaitement supporté (il m’est arrivé de shooter dans cette définition en 120 images par seconde), le 4K (4096 x 2160) l’est aussi, et bien évidemment tout ce qui se trouve entre les deux (je pense ici particulièrement à l’UHD en 3840 x 2160).
Bref, compte tenu de leur excellent rapport qualité/prix j’en ai une douzaine (dont certaines que j’utilise dans mes TVbox en tant que «magnétoscopes» et à ce jour aucune ne m’a jamais lâchée malgré parfois une utilisation extrêmement intensive dans des conditions climatiques (très fortes chaleurs / très grands froids / très fort taux d’humidité) pas toujours au top.
A. Watson –
Mauvaise qualité. Après même pas 3 utilisations le disque est affiché comme illisible sur mon mavic pro… Ça fait des années que j’utilise ce genre de carte mémoire je sais en prendre soin, ce n’est pas une erreur de manipulation. Je n’ai plus de carte mémoire à disposition..