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Sandisk Extreme 32GB microSDHC UHS-3 Card - SDSQXAF-032G-GN6MA [Newest Version], Black

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91,579 ratings

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Price:

$12.00

Size Name: 32GB

Style Name: Extreme

Cards include security feature for protection of copyrighted data
SD cards are fully compatible with all SD-compliant devices
Speed performance rating: Class 4 (based on SD 2.0 Specification)
This is an aftermarket of generic part

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Product Information

Size Name:32GB | Style Name:Extreme

Technical Details

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Summary

Screen Resolution

1366*768

Memory Speed

100 Megabytes Per Second

Wireless Type

802.11a

Number of USB 2.0 Ports

Other Technical Details

Brand

SanDisk

Series

Extreme microSDHC, SQXAF 32GB, V30, U3, C10, A1, UHS-1, 100MB/s R, 60MB/s W, 4x6, SD adaptor, Lifetime Limited

Item Model Number

SDSQXAF-032G-GN6MA

Product Dimensions

0.1 x 1.5 x 1.09 cm; 4.54 Grams

Item Dimensions L x W x H

1 x 15 x 11 millimetres

Colour

Red/Black

Voltage

1 Volts

Item Weight

4.54 g

Department

Electronics

Manufacturer

Licensed Accessories

ASIN

B06XWMQ81P

Is Discontinued By Manufacturer

Date First Available

8 05M 2017

Additional Information

Customer Reviews

91,579 ratings

4.8 out of 5 stars

Best Sellers Rank

114 in Computers (See Top 100 in Computers)
13 in Micro SD Cards

Warranty & Support

Amazon.com.au Return Policy:You may return for a full refund for the price you paid within 30 days of delivery any new computer purchased from Amazon that is "dead on arrival", arrives in damaged condition or is still in unopened boxes. Amazon may test or inspect returns. If Amazon finds a customer has misrepresented the condition of a return, Amazon may impose a fee equal to up to 15 percent of the merchandise sales price. Any returned computer that is damaged through customer misuse, missing parts, or in unsellable condition due to customer tampering may result in the customer being charged a restocking fee based on the condition of the computer. This policy does not restrict or alter any non-excludable statutory consumer protections or rights you may have, including under the Australian Consumer Law. To view full returns terms including return instructions, merchandise-specific requirements and exclusions see our ${hash-get returnsPolicyAnchor}Returns Policy Page. New, used, and refurbished products purchased from Marketplace vendors are subject to the returns policy of the individual vendor.

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This item:Sandisk Extreme 32GB microSDHC UHS-3 Card - SDSQXAF-032G-GN6MA [Newest Version], Black $12.00
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Sandisk SDSQUAR-032G-GN6MA Ultra 32GB Micro SDHC UHS-I Card with Adapter, 98MB/s U1 A1, Black $9.30
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Product description

Size Name:32GB | Style Name:Extreme

In addition to digital cameras, many portable media players feature SDHC card slots for storing music, data, and video. The SanDisk SDHC Memory Card gives you plenty of space for all your tunes, TV shows, video clips, and more. The card is also ideal for moving files between computers, cameras, and other gadgets.

From the manufacturer

Fast just got faster

Capture more action with the SanDisk Extreme microSDHC/SDXC UHS-I cards with transfer speeds of up to 100 MB/s [1]. Designed for the latest Android smartphones, tablets and MIL cameras.

Load apps faster with A1

Rated A1, the SanDisk Extreme microSDHC/microSDXC cards are optimised for apps, delivering faster app launch and performance, and providing better smartphone experience [2].

Burst mode and 4K Ultra HD video

Never miss a shot with continuous burst mode speeds of up to 60MB/s [1]. Capture sharp detail and vibrant colours with Full HD and stunning 4K Ultra HD video [3].


	SanDisk Extreme microSDHC UHS-I card 32GB	SanDisk Extreme microSDXC UHS-I card 64GB	SanDisk Extreme microSDXC UHS-I card 128GB	SanDisk Extreme microSDXC UHS-I card 256GB
Transfer Speed, up to	100 MB/s	100 MB/s	100 MB/s	100 MB/s
Albums (12 3.5-min MP3 songs) +	24 Albums	48 Albums	96 Albums	192 Albums
Photos (13.75 Megapixel JPEG/AVG. file size 3.5MB) +	240 Photos	480 Photos	960 Photos	1920 Photos
4K Ultra HD Video (3840x2160p) in minutes	100 mins 4K Ultra HD Video	200 mins 4K Ultra HD Video	400 mins 4K Ultra HD Video	800 mins 4K Ultra HD Video
microSD card Dimensions	14.99 x 10.92 x 1.02mm	14.99 x 10.92 x 1.02mm	14.99 x 10.92 x 1.02mm	14.99 x 10.92 x 1.02mm
SD Adapter Dimensions	31.75 x 23.88 x 2.03mm	31.75 x 23.88 x 2.03mm	31.75 x 23.88 x 2.03mm	31.75 x 23.88 x 2.03mm
Operating Temperature	-25 to 85 degrees Celsius	-25 to 85 degrees Celsius	-25 to 85 degrees Celsius	-25 to 85 degrees Celsius
Storage Temperature	-40 to 85 degrees Celsius	-40 to 85 degrees Celsius	-40 to 85 degrees Celsius	-40 to 85 degrees Celsius


Built to resist the toughest conditions Durability-tested to protect your memories from life’s mishaps – waterproof, shockproof, x-ray proof and temperature proof. Wherever you take your device, your card is designed to resist the toughest conditions [4].	Compatible with SD card slots This card comes with a convenient SD card adapter, so you can also capture and access data on the card with any device that has an SD slot. You’ll be able to use your memory card with SD-enabled cameras, camcorders, tablets and laptops.	Easily manage your memory The SanDisk Memory Zone app [5] simplifies managing your smartphone memory and your media files – making it easy to access and back-up all your photos, videos and precious files.	Disclaimers: [1] 128GB-256GB: Up to 100MB/s read speed; up to 90MB/s write speed. 32GB-64GB: up to 100MB/s read speed; up to 60MB/s write speed. Based on internal testing; performance may be lower depending upon host device interface, usage conditions and other factors. 1MB=1,000,000 bytes. [2] Results may vary based on host device, app type and other factors. [3] Compatible device required. Full HD (1920x1080) and 4K UHD (3840 x 2160) support may vary based upon host device, file attributes and other factors. [4] See product packaging and manufacturer’s website for additional information and limitations. [5] Download and instalation is required. See manufacturer’s website for more details. The Android robot is reproduced or modified from work created and shared by Google and used according to terms described in the Creative Commons 3.0 Attribution Licence.

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Customer reviews

5 star		88%
4 star		8%
3 star		1%
2 star		1%
1 star		3%

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Top reviews from Australia

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Arlags

Sandisk SDSQXA1-128G-GN6MA

Reviewed in Australia on 29 July 2019

Size Name: 128GBStyle Name: ExtremeVerified Purchase

Genuine 128GB SD Card. Used H2testW to verify. Works on my Nintendo Switch.

24 people found this helpful

Helpful

Comment

Adrian

It's the real deal.

Reviewed in Australia on 16 June 2020

Size Name: 400GBStyle Name: ExtremeVerified Purchase

I was slightly skeptical at first. I only purchased the SanDisk 400 GB Extreme card after seeing the positive reviews here, along with knowing that Amazon would also be fulfilling the order.

However, I still wanted to be sure that the SD card was legitimate before using it to film 4K H.265 footage.

I tested the SD card using H2testw (v1.4). I used the SD card slot of a Surface Book 2 with a BaseQi SD card adapter. The test results were inline with real world expectations (the computer was also being used for other projects whilst the test was in progress).

I also compared the SanDisk 400 GB Extreme to a SanDisk 64 GB Extreme and SanDisk 128 GB Extreme Pro I had purchased from a reputable local retailer. The fonts and logo all appear to match perfectly and the physical layout of the pins and memory chip match exactly, and the text and serial number layout on the back also match.

The warranty details listed inside the packaging were also for my region and contained correct contact information.

It's fair to say that these cards are genuine and you should be confident in your purchase.

Below are the H2testw results:
Warning: Only 375558 of 375560 MByte tested.
Test finished without errors.
You can now delete the test files *.h2w or verify them again.
Writing speed: 78.7 MByte/s
Reading speed: 84.7 MByte/s
H2testw v1.4

8 people found this helpful

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Trusted reviewer

Super fast card for note 9

Reviewed in Australia on 21 February 2019

Size Name: 400GBStyle Name: ExtremeVerified Purchase

This is an excellent card. Bought for my note 9 to increase storage as I take lots of photos. Very impressed with its speed when transfering from card reader to my PC. Also looks to be made super tough. Highly recommend it if your planning to increase your smart phone capacity. Just please make sure that your phone supports higher capacity memory cards

9 people found this helpful

Helpful

Comment

Fine for GoPro @ 4k

Reviewed in Australia on 22 October 2018

Size Name: 32GBStyle Name: ExtremeVerified Purchase

Blip over 71MB/s on a sequential test, which is perfectly fine for top end 4K recording on a Go Pro 7 Black. No fancy equipment used in this test, just an SD slot in an i7 Surface Book 2 and the full size adapter that comes with the memory card.

8 people found this helpful

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Comment

Dr. Fernando

Varying writing speed!

Reviewed in Australia on 6 October 2019

Size Name: 64GBStyle Name: ExtremeVerified Purchase

Arrived in time as stated.
Micro-SD cards are working.
But it said 30Mb/s writing speed.
I trasferd 4Gb of data to one of the sd cards, using the laptop's sd card slot. I checked the speed during file transfer. It reached about 27Mb/s at a few instances. Most of the time it was writing at speed of about 200Kb/s. So the writing speed was changing from about 50Kb/s to 27Mb/s.
I am not sure whether this speed change due to the nature of the file.

5 people found this helpful

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Comment

Notoca

Good Cards

Reviewed in Australia on 26 December 2018

Size Name: 32GBStyle Name: ExtremeVerified Purchase

Good cards for shooting photos. Not the quickest when saving photos especially when using continuous / burst mode. But I can live with that. One concern. Ive noticed with the large sd cards is that sometimes the contacts are pushed upwards. Not sure whether this is the card, the computer sd slot or the camera sd slot that is responsible. I've started buying micro sd cards now so if a contact is damaged it doesn't affect the card just the adapter. A lot cheaper to replace the adapter than the actual card.

4 people found this helpful

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Comment

Jaap van der Velde

It's a big as memory card

Reviewed in Australia on 1 July 2019

Size Name: 256GBStyle Name: ExtremeVerified Purchase

There's really not a lot to say about a memory card. It's big (and tiny), it works, it's pretty fast, but it had better be for that price. The packaging is terrible, expect to curse at the blister pack with frustrating "open here" instructions where it's clearly been hermetically sealed. But once you've got it out and in your device, it's pretty much something you can forget about. Good, not great - perhaps great it if still works in 5 years, which I hope it will.

3 people found this helpful

Helpful

Comment

Carlson Luong

Great value

Reviewed in Australia on 4 July 2020

Size Name: 256GBStyle Name: ExtremeVerified Purchase

I got this for my dash cam but it was not compatible because I learnt that this Extreme card is actually too powerful and too fast for my dash cam to handle! An analogy I was told was that it is like they speak 2 different languages and aren't able to communicate. For those interested, this is good for a very expensive dashcam like something that has 4k resolution.

Does not matter because I now use this for my DSLR camera. The value for this is very very good. I heard in the past, that this kind of memory card would go for $100+. Great deal

One person found this helpful

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Kikkilatzi

Gute Qualität und Performance ABER verwirrende Angaben auf der Packung

Reviewed in Germany on 26 December 2018

Size Name: 64GBStyle Name: ExtremeVerified Purchase

Seit Jahren setze ich in meinen Kameras SANDISK Speicher ein.

Auch diese Speicherkarte ist ein Sandisk Qualitätsprodukt und mit einer lebenslangen Garantie ausgestattet.
Die wichtigen Performanceangaben dieser Karte lauten U3 und V30.

Damit ist die Karte durch die V30 Angabe für 4K Aufnahmen mit 60 fps und auch 120 fps in Video Kameras, Drohnen und anderen Aufzeichnungsgeräten geeignet. In meinem Fall soll sie in einer DJI Mavic Air ihren Dienst verrichten.
Zur Überprüfung der Performance habe ich mit der Version 6.02 des kostenlosen Tools „Crystal Disk Mark“ die Karte an meinem PC mit Hilfe eines USB 3.0 UGREEN Card Readers getestet. Das Testergebnis habe ich als Screenshot beigefügt.

Die erzielten Performance Werte von 94,02 MB/s beim sequentiellen LESEN und 66,19 MB/s beim sequentiellen SCHREIBEN bestätigen die ausgezeichnete Performance dieser Karte.
Einen Stern Abzug gibt es aber für die mir unverständlich erscheinende Aussage auf der Verpackung, wonach die Karte bis zu 160 MB/s Leserrate erzielen soll. Ich frage mich, wie man auf diese Angabe kommt. Die Schreibrate ist mit ihren tatsächlichen 66,19 MB/s sogar 10% höher als vom Hersteller angegeben.

Herstellerangaben auf der Verpackung:
Speed up to 160 MB/s read – 60 MB/s write

Die Karte habe ich für 25,99 EUR hier bei Amazon gekauft und sie erhält von mir eine klare Empfehlung, gerade auch im Hinblick auf den recht günstigen Preis. Schnell kann man nämlich für eine 64 GB Sandisk Extreme Pro (schwarz/rot) deutlich mehr Geld bezahlen (43,- EUR), obwohl sie lt. Spezifikation auch „nur“ V30 und U3 bietet. Sie mag im praktischen Test sicher bessere Werte liefern, wenn aber die Anforderungen des Gerätes mit einer Karte für weniger Geld auch erfüllt sind, muss man nicht zwingend mehr als nötig zahlen.

Einige erklärende Worte zu SD Speicher und ihren Spezifikationen

Ein Ausflug in das Bezeichnungswirrwarr von Speicherkarten, wobei ich die Reihenfolge nach ihrer Relevanz im heutigen Einsatz aufgeführt habe.

1. Kapazitätsangaben von SD Speicherkarten

SD: Secure Digital Memory Card mit bis zu 4GB Speicherplatz
SDHC: steht für High Capacity mit 4GB bis zu 32GB Speicher
SDXC: steht für Extended Capacity mit 64GB bis 2TB Kapazität

2. V-Angabe Video Speed – Mindest Schreibrate speziell bei VIDEO Aufnahmen

Die wichtigste Information beim Einsatz einer Speicherkarte als Video Aufnahmemedium stellen diese speziellen Performance Angaben dar, die leicht verständlich auswertbar sind.
Natürlich sind die U1, U2 und U3 Angaben (siehe weiter unten) sehr aussagefähig, wenn es um die Performance einer Speicherkarte geht. Mit der Angabe der Video Speed Class (V) kann man jedoch sofort erkennen, ob die Karte für die benötigte Aufnahme ausreichend schnell die Aufnahmedaten schreiben kann.
Der V-Wert gibt die MINIMALE Geschwindigkeit an, mit der VIDEO-Daten auf die Karte geschrieben werden. So kann man leicht ersehen, welche Karte für den benötigten Einsatzzweck notwendig ist.

V6 Video Schreibrate mindestens 6 MB/s
geeignet für 720p sowie 1080p und 1080i Aufnahmen

V10 Video Schreibrate mindestens 10 MB/s
geeignet für Full HD Aufnahmen und Echtzeitübertragung

V30 Video Schreibrate mindestens 30 MB/s
geeignet für 4K Aufnahmen mit 60 fps und auch 120 fps

V60 Video Schreibrate mindestens 60 MB/s
geeignet für 8K Videoaufnahmen mit bis zu 120 fps

V90 Video Schreibrate mindestens 90 MB/s
geeignet für 8K Videoaufnahmen mit bis zu 120 fps

3. Karten Klassen Class 2,4,6, 10 und U1, U2 U3

Früher waren die Class 2,4,6 und 10 Angaben noch oft verbreitet und üblich, die heute aber kaum noch für aktuelle Einsatzzwecke ausreichende Performance bieten. Die Zahlen hinter den Class Angaben geben die Mindest Schreibraten an. Eine MicroSd Class 10 Karte ist mit 10 MB/s SCHREIB Rate ausgestattet, eine Class 2 nur mit 2 MB/s.
Aktuelle Karten besitzen die neueren U Bezeichnungen.

U1 für 10 MB/s Schreibrate
U2 für 20 MB/s Schreibrate
U3 für 30 MB/s. Schreibrate

Geht es um Anwendungen im 4k oder 8k Video Aufnahme Modus, kommen nur U3 Karten in Betracht, die entsprechend hohe Werte bei der Schreibrate aufweisen. Aussetzer oder Abbrüche und Fehlermeldungen während der Video Aufzeichnung können die Folge sein, wenn eine Karte nicht die vom Gerät benötigte Video Schreibrate zur Verfügung stellt.

4. A-Angabe - Applikation Performance (Smartphones)

Diese Angabe ist für den Einsatz vor allem in Smartphones relevant, da damit die Mindest- Schreib und Leserate einer SD Karte definiert ist, wenn die Karte vom Telefon oder Tablet als aktiver Speicher genutzt wird. Die Performance wird damit in Abhängigkeit der Input/Output operations Per Second angegeben. Je größer der IOPS-Wert, desto schneller ist der Datenträger bei Einsatz in einem Smartphone oder Tablet. Hier kommt es weniger auf die maximale Schreibgeschwindigkeit an, sondern darauf, wie viele Operationen pro Sekunde auf bzw. mit der Karte möglich sind.

A1 Mindestleserate bei 1500 IOPS; Mindestschreibrate bei 500 IOPS
A2 Mindestleserate bei 4000 IOPS; Mindestschreibrate bei 2000 IOPS

5. Interface Spezifikationen UHS und Klassen I, II, III

Damit es noch etwas verwirrender wird, wurde auch für das Interface noch eine spezielle Spezifikation definiert. Nicht jede Karte läuft nämlich auch in jedem Gerät. Dazu muss man wissen, dass sowohl auf Karten-, als auch auf Geräte Seite Definitionen des Datenübertragungssystems existieren.

UHS-I:
Spec. V 3.01 mit 12,5 MB/s (SDR12), 25 MB/s (SDR25), 50 MB/s (SDR50, DDR50) oder 104 MB/s (SDR104)

UHS-II:
Spec. V 4.00 oder 4.01 mit 156 MB/s (FD156) bzw. 312 MB/s (HD312)

UHS-III:
Spec. V 6.0 mit 312 MByte/s (FD312) oder 624 MByte/s (FD624)

Ältere SD Speicherkarten, die eine UHS Kennzeichnung besitzen, sind mit SDXC und SDHC Karten kompatibel. Ohne eine zusätzliche Kennzeichnung der Klasse in Form einer I, II oder III kann die Datenrate jedoch niedriger sein.

Nachwort
MB/s Megabyte pro Sekunde ist NICHT zu verwechseln mit Mbit/s also Megabit pro Sekunde.
Die Internet Datenleitung liefert Daten nach Hause. Die Daten Übertragungsrate wird hier in Mbit/s angegeben. Ein Internet Anschluss hat beispielsweise 50 Mbit. Das heute übliche Gigabit LAN zu Hause bietet eine Übertragungsrate von 1 Gbit/s. Das hört sich nach viel an, aber im Vergleich mit den Daten Schreib- und Leseraten der Speicherkarten, ist es nicht wirklich annähernd so schnell. Nur das Gigabit LAN daheim kommt an die Geschwindigkeit von schnellen SD Karten heran.
Mit einem Gigabit LAN kann man theoretisch bis zu 125 MB/s übertragen. In der Praxis wird man meist deutlich unter diesem Wert bleiben. Der 50 Mbit Internet Anschluss hingegen ermöglicht es Daten mit maximal 6,25 MB/s zu streamen (Empfang).
Ich habe diese Info zu meiner Rezension hinzugefügt, da ich bei Gesprächen mit Freunden oft feststelle, dass Verwechselungen zwischen MB/s und Mbit bzw. Mbit/s an der Tagesordnung sind.

949 people found this helpful

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Antecessor

Buena para cámaras y teléfonos, vídeo hasta 4K. ¿U3 V30 A2?... Aclarando clasificación

Reviewed in Spain on 23 April 2019

Size Name: 64GBStyle Name: ExtremeVerified Purchase

La serie Xtreme de Sandisk es adecuada para usos exigentes en cuanto a velocidad de grabación, como fotografía de gran resolución, fotos a ráfagas, vídeo FHD sin compresión o 4K... Por tanto se recomienda para uso en cámaras réflex o compactas de alta gama, pero también para los móviles de alta y media gama, que cada vez equipan cámaras de mayor resolución. No es ninguna tontería gastar un poco más (muy poco) y llevar instalada una memoria de alto rendimiento como esta. En mi caso la he adquirido para mi cámara Nikon evil (objetivos intercambiables sin espejo) y estoy muy satisfecho con el rendimiento.

Pongo un poco de luz sobre qué significan las cifras sobre velocidad que aparecen en la tarjeta:

·U3· La referencia de velocidad en las tarjetas actuales se establece sobre la base de las tarjetas Clase 10, clasificación más alta hasta hace unos pocos años que garantizaba un mínimo de 10 MB/S, suficiente para grabar vídeo FHD 1080p con garantía. Los nuevos estándares de vídeo hacen recomendables velocidades mínimas garantizadas superiores, que se suelen definir como múltiplos de esta referencia que se indican dentro de una U (UHS Speed Class). La velocidad más baja por esta clasificación es U1 que equivale a Clase 10 (1 x 10 MB/S). La tarjeta que se comenta lleva un 3 dentro de la U, por tanto garantiza una velocidad mínima 3 x 10 MB/S. Si utilizásemos esta tarjeta para llevar películas en un móvil o tablet, una peli HD en mkv de unos 2,5 GB tardaría en cargarse en la tarjeta desde nuestro PC aproximandamente 1 minuto 20 segundos (en una Clase 10 U1 tardaría 4 minutos).

·V30· Video Speed Class 30. Esta clasificación, que va desde V6 a V90, garantiza velocidad en grabación de vídeo y posibilidad de grabación simultánea de varios archivos. La cifra se corresponde con la velocidad, de 6 MB/S (V6) a los 90 MB/S (V90). Para 8K es recomendable un mínimo de 60 MB/S (V60). La V30 de la que se comenta es adecuada para vídeo hasta 4K.

·A2· App Performance Class 2. La clase APC indica la adecuación de una tarjeta para uso en dispositivos Android. La máxima actual es APC 2, o A2, que garantiza unas velocidades de lectura/escritura en modo secuencial de 10 MB/S, lectura aleatoria 4000 IOPS, escritura aleatoria 2000 IOPS, todo ello adecuado para poder ejecutar aplicaciones desde la tarjeta (es el objetivo de esta clasificación más allá de la capacidad de grabar datos).

En uso real en escritura en un PC no he pasado de 30 MB/S, pero se ha mantenido muy cerca de éstos de forma sostenida. Es lo que promete el estándar con el que se vende y no se puede exigir más. En el blister se prometen 60 MB/s en escritura. Estas velocidades son más factibles en lectores de tarjetas de dispositivos especializados, como cámaras de fotos de ala gama, pero en general no se alcanzan. Hay que considerar esa cifras fuera de norma como "máxima en pico", y las cifras bajo norma, los 30 MB/S, como "mínima garantizada" en lector compatible. Es la que hay que creer y exigir.

El formato de serie es exFAT, la variante de FAT32 que permite archivos de más de 4 GB. Puede que el móvil de algún usuario no lo soporte. Basta con formatearla en un PC a FAT32 y volver a introducirla en el móvil. Ojo, la utilidad de Windows no es capaz de formatear tarjetas de más de 32 GB en FAT32, hay que utilizar aplicaciones como Easeus Partition Master o similares.

De momento funciona muy bien. Si falla lo reportaré aquí mismo y corregiré mi valoración. Para uso general en teléfonos y grabar video FHD o 4K es una elección estupenda. No merece la pena ahorrar 3 o 4 € en tarjetas más lentas.

671 people found this helpful

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Giovanni (MigliorSoluzione)

Ottimo rapporto qualità/prezzo. Consigliata anche da GoPro.

Reviewed in Italy on 17 January 2020

Size Name: 32GBStyle Name: ExtremeVerified Purchase

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.

Comunque, se siete alla ricerca di una sd economica, quindi con prezzo più basso ma comunque ottima con la quale non dovete farci chissà che cosa, allora vi consiglio di dare un'occhiata anche a questa: https://amzn.to/2uQrK3i

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!

497 people found this helpful

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Benoît

👍🏼 Ce n'est que du bonheur en vidéo ! 👍🏼

Reviewed in France on 26 August 2018

Size Name: 32GBStyle Name: ExtremeVerified Purchase

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.

571 people found this helpful

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SotiCoto

They could at least be honest with the capacity of these things.

Reviewed in the United Kingdom on 19 February 2019

Size Name: 128GBStyle Name: ExtremeVerified Purchase

I've got somewhat used to storage devices having less space on them than they advertise... but it is always jarring to see "128GB" on the label and find it only has 100GB space on it. More than a fifth of it is missing. Couldn't they at least have the decency to label how much space we get on these devices rather than some number that is X amount more that we can never use?

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Sandisk Extreme 32GB microSDHC UHS-3 Card - SDSQXAF-032G-GN6MA [Newest Version], Black

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Fast just got faster

Load apps faster with A1

Burst mode and 4K Ultra HD video

Built to resist the toughest conditions

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