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If your drive stops working, the Rescue data recovery plan will attempt to recover the data from the failed drive and recovered data will be returned on a media storage device or via secure cloud-based data storage.
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SanDisk 1TB Extreme microSDXC UHS-I Memory Card with Adapter - Up to 160MB/s, C10, U3, V30, 4K, A2, Micro SD - SDSQXA1-1T00-GN6MA

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349,310 ratings

| 1000+ answered questions

$193.79

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Style: Card Only

Capacity: 1TB

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Brand	SanDisk
Flash Memory Type	Micro SD
Memory Storage Capacity	1 TB
Compatible Devices	Camera, Smartphone
Special Feature	X_ray_proof, Temperature_proof, Shock_proof, Water_proof

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Up to 160MB/s read speeds to save time transferring high res images and 4K UHD videos; Requires compatible devices capable of reaching such speeds
Up to 90MB/s write speeds for fast shooting; Requires compatible devices capable of reaching such speeds
4K UHD and Full HD Ready with UHS speed class 3 (U3) and video speed class 30 (V30)
Rated A2 for faster loading and in app performance
Built for and tested in harsh conditions: Temperature Proof, Water Proof, shock Proof and x ray Proof

There is a newer model of this item:

SanDisk 1TB Extreme microSDXC UHS-I Memory Card with Adapter - C10, U3, V30, 4K, 5K, A2, Micro SD Card- SDSQXAV-1T00-GN6MA
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Customer Rating	(349310)	(9072)	(9072)	(9072)	(414)	(414)
Price	$193.79	$15.29	$7.64	$30.59	$19.99	$35.99
Shipping	FREE Shipping. Details	FREE Shipping on orders over $25.00 shipped by Amazon or get Fast, Free Shipping with Amazon Prime	FREE Shipping on orders over $25.00 shipped by Amazon or get Fast, Free Shipping with Amazon Prime	FREE Shipping. Details	FREE Shipping on orders over $25.00 shipped by Amazon or get Fast, Free Shipping with Amazon Prime	FREE Shipping. Details
Sold By	Direct Suppliers US	ARCHES LIMITED (PB)	ARCHES LIMITED (PB)	ARCHES LIMITED (PB)	ARCHES LIMITED (PB)	ARCHES LIMITED (PB)
Computer Memory Size	1000 GB	128 GB	64 GB	—	128.0 GB	—
Digital Storage Capacity	1000 GB	128 GB	64 GB	256 GB	128.0 GB	256.0 GB
Flash Memory Type	Micro SD	Micro SDXC	Micro SDXC	Micro SDXC	Micro SDXC, SD	Micro SDXC
Item Dimensions	0.04 x 0.59 x 0.43 inches	—	—	—	—	—
Item Weight	0.16 ounces	—	—	—	—	—
Memory Storage Capacity	1 TB	128 GB	64 GB	256 GB	128.00 GB	256.00 GB
Secure Digital Association Speed Class	Class 10	Class 10	Class 10	Class 10	Class 10	Class 10
Size	1TB	128 GB	64 GB	256 GB	128 GB	256 GB

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Product Description

With the SanDisk Extreme 1TB (1) microSD UHS-I Memory Card get extreme speeds for faster transfer, app performance, and 4K UHD video. Ideal for your Android smartphone, action cameras or drones, this high-performance microSD card handles 4K UHD video recording, Full HD video and high-resolution photos. The super-fast SanDisk Extreme microSDXC memory card reads up to 160MB/s and writes up to 90MB/s. Plus, itandrsquo;s A2-rated, so you can get fast application performance for an exceptional smartphone experience. Not all devices support microSD memory card formats. Check with your device manufacturer for more details. For 128GB-1TB: Up to 160MB/s read speeds, engineered with proprietary technology to reach speeds beyond UHS-I 104MB/s, requires compatible devices capable of reaching such speeds. Up to 90MB/s write speeds. 1MB=1,000,000 bytes. 1GB=1,000,000,000 bytes. Actual user storage less. (2) Compatible device required. Full HD (1920x1080) and 4K UHD (3840 x 2160) support may vary based upon host device, file attributes and other factors. (3) Download and installation required. (4) Card only. See SanDisk website for additional information and limitations. (5) 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. (6) Registration required; Terms and conditions apply. (7) For 64GB-1TB: A2 performance is 4000 read IOPS, 2000 write IOPS. Results may vary based on host device, app type and other factors. (8) Read only; Based on internal testing. Results may vary based on host device, file attributions and other factors.

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Product information

Technical Details

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Summary

RAM

‎1000 GB

Memory Speed

‎160 Megabytes Per Second

Other Technical Details

Brand

‎SanDisk

Item model number

‎SDSQXA1-1T00-GN6MA

Item Weight

‎0.16 ounces

Product Dimensions

‎0.04 x 0.59 x 0.43 inches

Item Dimensions LxWxH

‎0.04 x 0.59 x 0.43 inches

Batteries

‎1 A batteries required.

Manufacturer

‎Western Digital Technologies, Inc.

ASIN

‎B07P9W5HJV

Country of Origin

‎Malaysia

Is Discontinued By Manufacturer

‎No

Date First Available

‎April 15, 2019

Additional Information

Customer Reviews

349,310 ratings

4.8 out of 5 stars

Best Sellers Rank

#132 in Micro SD Memory Cards

Warranty & Support

Amazon.com Return Policy:You may return any new computer purchased from Amazon.com that is "dead on arrival," arrives in damaged condition, or is still in unopened boxes, for a full refund within 30 days of purchase. Amazon.com reserves the right to test "dead on arrival" returns and impose a customer fee equal to 15 percent of the product sales price if the customer misrepresents the condition of the product. Any returned computer that is damaged through customer misuse, is missing parts, or is in unsellable condition due to customer tampering will result in the customer being charged a higher restocking fee based on the condition of the product. Amazon.com will not accept returns of any desktop or notebook computer more than 30 days after you receive the shipment. New, used, and refurbished products purchased from Marketplace vendors are subject to the returns policy of the individual vendor.

Product Warranty: For warranty information about this product, please click here

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From the manufacturer

SanDisk Extreme 128GB

MobileMate USB 3.0 Reader

128GB Card & Reader Bundle

Video Quality

Capture uninterrupted 4K UHD and Full HD video without skipping frames

Move Files Fast

10X faster than with USB 2.0 readers⁸ with the performance of USB 3.0

Capture Hi-res video Fast

Capture uninterrupted 4K UHD video anytime anywhere

Read Speed

Up to 160MB/s* means shorter wait times when transferring files

Read Speed

Up to 160MB/s⁹ so you can move big files (or a lot of files) fast

Read Speed

Up to 160MB/s⁹ so you can move files fast

Write Speed

Up to 90MB/s* enables you to capture fast action in full detail

Compact & Durable

Take it anywhere—built to hold its own when tossed in your bag

Performance Rating

Record and shoot faster with C10, U3, and V30, and load apps faster with A2

USB 3.0-Compatible

The reader is compatible with USB 3.0 and backwards-compatible with USB 2.0

Product guides and documents

Specification Sheet (PDF)

Customer reviews

5 star		86%
4 star		10%
3 star		2%
2 star		1%
1 star		2%

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Top reviews from the United States

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Mike

Legit card. Legit fast.

Reviewed in the United States on March 3, 2019

Style: Card OnlyCapacity: 128GBVerified Purchase

This review is specifically for the item SanDisk Extreme 128GB microSD UHS-I Card with Adapter - 160MB/s with SanDisk MobileMate USB 3.0 microSD Card Reader. My card was shipped from and sold by Amazon.com. The top review for this card would have you believe the product I received, based on physical appearance, is fake. The speed tests and H2testw program appear to indicate it achieves the advertised speeds and has the correct capacity using the bundled USB 3.0 card reader in a USB 3.0 port on my desktop Windows 10 PC.
If this card is somehow "fake" it is quite impressive. I'm sure there are some fakes out there, but if you do decide to buy this card it might be worth performing your own tests before deeming it fake based off the looks alone (assuming it's not an incredibly obvious fake).
April 18, 2020 (13 month update): card still works great. No complaints, I'm very happy with it.

1,009 people found this helpful

Helpful

The Dukes Brew

Working fantastically for Nintendo Switch!!!

Reviewed in the United States on January 8, 2020

Style: Card OnlyCapacity: 1TBVerified Purchase

I love the product been working perfectly since the day I bought it. I bought this specifically for my Nintendo Switch. I previously had the 512GB Micro SD Card but quickly ran that up, so finally this card went on a discount and I was able to buy it!!!

Am glad I did I finally have ALL my games on my system, no more having to delete a few here and there to make room for the next game, finally I can just sit back and Buy/Download just about anything I can get, worry free of weather or not I have enough space!!!!

After the format I believe I was left with around 953GB and as of now am left with 75.8GB TOTAL left (Including System Memory), which is still very good at least to me since most games are 2 to 8 sometimes 12GB depending on the game.

Anyway I have a total of 176 Games the range from huge AAA games to small Nindies (Nintendo Indies) games as well, and again am very happy with my purchase. Also you can see my current inventory of games in the pictures for better idea of what games

180 people found this helpful

Helpful

Larry Lopez

Either fake or defective

Reviewed in the United States on November 30, 2018

Style: Card OnlyCapacity: 128GBVerified Purchase

First red flag was when I looked underneath the card. Instead of being solid black like every other SD card I've seen, it looked like a green circuit board with a strange black square on it.

Second red flag was the MUCH lower than advertised read/write speeds (only 50-55 write with mid 80s read).

Third red flag was when I tried to copy data from my old sd card on to this one. I was able to get about 21.5 GB of data on to it until it unmounted itself from my computer. I then physically removed the card and inserted it back in the computer. Windows recommended that I repair the drive, so I did. After that, I go and try to copy the data again and it unmounted itself, just like before. I tried the same thing by repairing the drive, except this time, Windows informs me that it could not be repaired! Seriously??

So much for trying to get a good black Friday deal...

1,250 people found this helpful

Helpful

Amazon Customer

A Miniature Storage Behemoth

Reviewed in the United States on September 30, 2018

Style: Card OnlyCapacity: 256GBVerified Purchase

Replaced a 64GB memory in my Galaxy S9+, of the same brand just not extreme.
Now my phone has more storage space than my two best laptops... of course you know, I will buy more.

This, so far, is the holy grail for portable storage... this has more memory than the SSD in my ThinkPad W530 workstation... blows my mind. As far as quality goes, you can't beat SanDisk, they been around since the beginning in the SD card arena.

This little tiny thing, is so tiny, I could put it up my rear end, after filling it with days worth of videos and unending images... doubt I will never need this much room but... I like to record a lot. This thing pretty much turned my lowly cell phone into an absolute powerhouse.

290 people found this helpful

Helpful

Amazon Customer

Advertised read speed is false!

Reviewed in the United States on October 14, 2018

Style: Card OnlyCapacity: 128GBVerified Purchase

SanDisk advertises this as the fastest read UHS-I in the market (160mb)! Multiple tests on the 128GB don't confirm this claim. I tested the card on my Surface pro (2017), Surface GO and XPS 13 and got only 88mb read speed and 84 write speed at best!! My Samsung Evo select 128GB & 256GB have higher read and write speed.

631 people found this helpful

Helpful

Julio C.

Very fast, but look elsewhere if buying for a Nintendo Switch.

Reviewed in the United States on June 10, 2019

Style: Card OnlyCapacity: 128GBVerified Purchase

The Nintendo Switch is incapable of utilizing this SD card to its full capacity. It only supports U1 speeds, and the recent Digital Foundry investigation into the Switch's loading speeds revealed that using this card instead of a U1 rated one would actually hinder loading speeds, at least while playing Zelda. I say this to tell users that this card is overkill if that's what you're buying it for, and you're better off going for a slower one that the Switch was actually designed to use.

This is not the fault of anyone, just wanted to help people become more aware of it.

Besides that, the packaging was really nice and well done. The card achieves its rated speeds after testing it using my computer. If you are looking at this for an expensive camera capable of utilizing it properly, look no further.

146 people found this helpful

Helpful

E. L.

Lies about speed

Reviewed in the United States on December 11, 2018

Style: Card OnlyCapacity: 128GBVerified Purchase

Like many of the other reviewers pointed out, this card is fraudulent. "U3" and "A2" my ass! The read/write speeds are nowhere near the advertised values. I'm getting 74/66 MB/s which is worse than my Samsung 128GB U1 microSD. Non-sequential writes are awful at 6/2 MB/s. $30 might seem like a good deal for this card but it's not. Don't be fooled!

386 people found this helpful

Helpful

Gabriel

Fast enough to use as extra storage on Surface Pro 6 but not as fast as expected

Reviewed in the United States on December 1, 2018

Style: Card OnlyCapacity: 128GBVerified Purchase

The built-in SSD disk space is extremely expensive on the Surface Pro 6, so getting the smallest Surface Pro 6 and using a microSD card to complement the built-in storage is an attractive option in my opinion.
The good thing is that this card performs well when inserted in the microSD card reader of the Surface Pro 6 (about 80 MB/s sequential read, 80 MB/s sequential write) although it does not reach the advertised speed (which is "up to" 160 MB/s sequential read, 90 MB/s sequential write).
As I believe the UHS-1 standard is limited to 104 MB/s anyway I am not sure if it is possible to find microSD cards that would perform faster.
In short a good choice for the Surface Pro 6 even if possibly not the best choice.

231 people found this helpful

Helpful

Top reviews from other countries

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Kikkilatzi

Gute Qualität und Performance ABER verwirrende Angaben auf der Packung

Reviewed in Germany on December 25, 2018

Style: Card OnlyCapacity: 64GBVerified 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.

1,700 people found this helpful

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MigliorSoluzione

Ottimo rapporto qualità/prezzo. Consigliata anche da GoPro.

Reviewed in Italy on October 11, 2021

Style: Card OnlyCapacity: 32GBVerified 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.

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!

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SotiCoto

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

Reviewed in the United Kingdom on February 18, 2019

Style: Card OnlyCapacity: 128GBVerified 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?

446 people found this helpful

Benoît

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

Reviewed in France on August 25, 2018

Style: Card OnlyCapacity: 32GBVerified 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.

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msmorx

Ist das nur übliches Marketing oder schon Betrug ? Die Karte ist viel langsamer als beworben.

Reviewed in Germany on May 3, 2019

Style: Card OnlyCapacity: 400GBVerified Purchase

Die Karte ist auf der Verpackung mit 160 MB/s Lesen und 90MB/s Schreiben angegeben.
Beim mehrfachem Kopieren verschieden großer Dateien 2-12GB kam ich zwar beim Schreiben unter Windows 10, exFAT und NTFS bis zu 80MB/s was ich voll akzeptiert hätte, aber das Lesen war nur halb so schnell wie beworben. Ich hatte die Karte vorallem wegen den angepriesenen 160 MB/s Leserate gekauft und 35 Euro mehr als für die mit 90MB/s Lesegeschwindigkeit angegebene SanDisk Extreme gleicher Kapazität gezahlt.
Vom Stuhl gefallen bin ich dann bei den 4K Schreib/Lese Datenraten.
Egal welches Tool ich verwendet habe kamen hier nicht mehr als 2,5 MB/s Schreiben (4k) raus bei ca. max 420 IO/s.
Hier die für SD Karten definierten Specs:
U1/U3: Diese Zahl drückt das Schreibtempo einer SD-Karte mit UHS-I- oder UHS-II-Technik aus.
U1 steht für 10 MBps, U3 für 30 MBps.
V6-V90: Das ist eine Schreibtempoangabe für Videoaufnahmen. Die Spanne reicht von 6 bis 90 MBps.
A1/A2: Bei diesen Geschwindigkeitsangaben schafft die Karte eine bestimmte Anzahl von Zugriffen pro Sekunde (A1: 1.500 beim Lesen, 500 beim Schreiben; A2: 4.000 beim Lesen, 2.000 beim Schreiben).

Die für die SanDisk Extreme 400G angegeben Werte wie U1 und V30 schafft sie natürlich locker.
Die Angebe A2: schafft sie aber nach meinen Messungen um Faktor 3-4 NICHT! ( siehe Screen Shot)
Die Karte schaft nicht einmal die A1 Einstufung!

Ich finde es hilft auch nicht auf der Rückseite mit nur mit der Lupe lesbar zu schreiben, dass man um 160MB/s zu erreichen ein passendes Device benötigt. Aber was das für ein "device" denn sein soll bleibt völlig im Unklaren.
Nach genauerem Web-Studium fand ich heraus, dass das Karteninterface UHS-I sowieso nur max. 105 MB/s kann.
Die 160 MB/s sind nur mit einem UHS-2 Karteninterface möglich, dass die Karte ja gar nicht hat, oder vielleicht doch?
Ich hab mir jetzt von SanDisk den UHS-2 USB-C Reader bestellt und werde das mal interesse halber prüfen.

Die Zahlen auf der Verpackung sind jedenfalls reines Marketing.
Die Karte funtioniert in Photokameras bestimmt ganz gut auch beim Filmen mit 4K Auflösung.
Meine Canon M50 schreibt mit max. 150 Mbit/s bei 4 k Video.
Ich habe auch die Serienbildfunktion der M50 mit large JPG und paralleler large RAW Speicherung getestet.
Nach ein paar Sekunden fängt die Kamera an zu stottern und muß erst ihren Buffer wegschreiben.
Meine 2 Jahre alte ADATA SDXC KArte die nur mit 45MB/s Write angegeben ist verhält sich übrigens identisch.
Also auch hier kein Praxisvorteil.
Zum Vergleich, die SanDisk "Ultra" kostet bei gleicher Kapazität 35,- Euro weniger, die tuts auch für die Kamera.
Und selbst meine 2 Jahre alte ADATA verhält sich mit der nagelneuen Canon M50 gleich.
Spart euch das Geld für eine schnelle SD Karte!
Die Kameras, Laptops und Mobilphones brauchen erst einmal das schnelle UHS-2 Interface,
und momenten eher selten zu finden.

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SanDisk Extreme 128GB

MobileMate USB 3.0 Reader

128GB Card & Reader Bundle

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Move Files Fast

Capture Hi-res video Fast

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