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Comparison SanDisk Extreme V30 A2 microSDXC UHS-I U3 128 GB vs SanDisk Ultra 80MB/s microSDXC 320x UHS-I 128 GB

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SanDisk Extreme V30 A2 microSDXC UHS-I U3 128 GB
SanDisk Ultra 80MB/s microSDXC 320x UHS-I 128 GB
SanDisk Extreme V30 A2 microSDXC UHS-I U3 128 GBSanDisk Ultra 80MB/s microSDXC 320x UHS-I 128 GB
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Main
High speed performance. Class for applications A2. Access to proprietary utilities for data backup and recovery.
TypemicroSDmicroSD
Storage128 GB128 GB
Specs
Speed class1010
UHS classUHS-I Class 3 (U3)UHS-I Class 1 (U1)
Video recording classV30V10
Application classA2
Read speed160 MB/s80 MB/s
Write speed90 MB/s10 MB/s
Adapter included
Manufacturer's warrantylifetime
Added to E-Catalogdecember 2018august 2018
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SanDisk 128GB Extreme microSDXC card SD adapter microSD card for smartphones action cameras drones V30 up to 190 MB/s SanDis

Save time with card offload speeds of up to 190MB/s powered by SanDisk QuickFlow Technology Pair with the SanDisk Profession... moreal PRO-READER SD and microSD to achieve maximum speeds (sold separately) Up to 90MB/s write speeds for fast shooting 4K UHD-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
Amazon.co.uk
Delivery: to United Kingdom
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£13.95

SanDisk Extreme 128GB Class 3 MicroSDXC Memory Card and Adapter

Rated UHS Speed Class 3 U3,this fast, high-performing card teams up with your action camera or drone to let you capture and s... morehare unforgettable videos. With readwrite speeds up to 160MBs90MBs, SanDisk Extreme microSD UHS-I cards deliver the fast
OfficeStationery.co.uk
Delivery: in United Kingdom
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£18.43

SanDisk 128GB Extreme A2 V30 microSD Card (SDXC) UHS-I U3 + Adapter-

Shoots 4K and 5K Video This card captures 4K and 5K UHD and Full HD video with its UHS Speed Class 3 (U3) and Video Speed Cla... moress 30 (V30) ratings. Load Apps with A2 Get faster app performance for an outstanding smartphone experience thanks to this card’s A2 Specification.[64GB-1TB] Durable Design SanDisk Extreme microSDHC and microSDXC UHS-I Cards are shockproof, temperature-proof, waterproof, and X-ray-proof. Easy File Recovery Includes a 2-year offer for RescuePRO Deluxe file recovery software, which helps you restore images you accidentally deleted. Transfer Speeds: Up to 190MB/s Write Speeds: Up to 90MB/s Video Quality: 4K & 5K UHD Speed Class: C10, V30, and U3 App Performance: A2 Specification Performance: Allows for high-speed offloads that minimize downtime Card Compatibility: Ideal for SanDisk SD and microSD cards with SanDisk QuickFlow Technology Design: Premium aluminum enclosure helps keep cards cool to prevent overheating Connectivity: USB-C (5Gbps) port provides super-fast
Mymemory.co.uk
Delivery: to United Kingdom
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£22.99

Sandisk SanDisk 128GB Extreme microSDXC Memory Card SAN-128GB-EXT-MSD

SanDisk 128GB Extreme microSDXC Memory Card
Tekzone.co.uk
Delivery: to United Kingdom
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£34.95

SanDisk Extreme 128 GB MicroSDXC SDSQXAA-128G-GN6AA

SanDisk Extreme 128 GB MicroSDXC
Smartteck.co.uk
Delivery: to United Kingdom
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£24.00
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UHS class

UHS bus version supported by the memory card.

UHS is a data exchange technology used in SD/microSD cards of the (micro)SD HC and (micro)SD XC standards. It allows you to significantly increase the speed of data exchange compared to previous standards; at the same time, media supporting this technology are quite compatible with equipment that does not have UHS - except that the speeds in such cases will be limited by the capabilities of the card reader, and not the card itself.

As for the versions, their names consist of two parts: UHS generation (I or II) and class (1 or 3) - for example, UHS-I Class 1. Actually, this is the most modest version of UHS found in modern memory cards; in addition to it, UHS-I Class 3 and UHS-II Class 3 are popular. The maximum data transfer speed (usually referring to read mode) depends on the UHS generation - it is 104 MB/s for version I and 312 MB/s for version 2. “Class”, in turn, determines the lowest (guaranteed) write speed : it is at least 10 MB/s for Class 1 and at least 30 MB/s for Class 3. Different versions of UHS are quite compatible with each other, except that the speed in such cases will be limited by the slower standard.

Note that for UHS cards, more advanced characteristics may be indicated in other paragraphs - for example, the video recording class (see below) V90 for a UHS-II Class 3 card. There...is no contradiction here: the speed of 90 MB/s provided by such a card in recording mode, it fully satisfies the “not lower than 30 MB/s” condition provided for UHS Class 3.

Video recording class

The video recording class supported by the memory card.

This parameter is indicated for SD/microSD cards and their variations, as well as CompactFlash (see “Type”). In the first case, the format designation V* is used, in the second - VPG*, but the idea is the same in both cases: the numbers indicated instead of an asterisk are the lowest write speed (in MB/s) that the card is guaranteed to provide. This speed is of key importance primarily in video recording, which is why this parameter is called “Video Recording Class”; the higher it is, the higher the resolution and frame rate at which you can record using this card.

The minimum video recording class found in modern SD/microSD family cards is V6, which already allows you to work with HD and Full HD video. However, for Full HD it is advisable to have a card of at least V10 level. And the V30 class already allows you to comfortably work with Ultra HD 4K. Faster cards are also being released - V60 and even V90, suitable for resolutions of 8K and higher.

In turn, in CompactFlash cards you can find models of the VPG20, VPG65 and VPG130 classes

Note that the video recording class may well be higher than the general speed class and/or UHS class (see above). However, there are no contradic...tions here. UHS class requirements require write speeds of “not less than...”; Thus, for example, all cards with a video recording class of V30 and higher will comply with the UHS Class 3 standard (“not lower than 30 MB/s”). And the general speed class describes the capabilities of the card when working with equipment without UHS support (and such equipment is practically not used in video recording).

Application class

Speed class when working with applications to which the memory card corresponds.

When working with applications that use a memory card (for example, mobile games), information is written and read not in a continuous stream, as when recording video or copying data, but in separate small fragments, and from random areas in the drive’s memory (the so-called random write/read). So a high-class video recording (see above) does not always mean good flow Rate when working with demanding games and other resource-intensive programs. Therefore, the characteristics of memory cards began to separately indicate the speed class for applications.

The key indicator for assigning a particular class is the minimum number of IOPS (input/output operations per second) that the media can provide in random write and read mode. Nowadays, the following classes are relevant:

A1 — at least 1500 IOPS for reading and 500 IOPS for writing;

A2 — at least 4000 IOPS and 2000 IOPS, respectively.

The continuous recording speed (for example, when recording video) in both cases must be at least 10 MB/s (often it is higher - see “Speed class”, “Video recording class”).

In the future, we can expect the emergence of new, more productive classes for applications. We also note that this parameter significantly affects the price of the card.

Read speed

The maximum speed of reading data from a memory card.

Any modern memory card provides sufficient reading speed for simple everyday tasks — like copying photos from a camera to a laptop. Therefore, it makes sense to pay attention to this parameter mainly in cases where the card is purchased for professional use, or if high speed is critical for you — for example, if you often have to copy photos from the camera in a hurry. In doing so, two points should be taken into account. Firstly, the corresponding speed must be supported by the card reader where the card is used. Secondly, this paragraph indicates the theoretical maximum — in perfect conditions; the actual reading speed may be lower (if we are talking about cards with UHS, this speed can be estimated by the UHS class, see above about it). Nevertheless, it is quite possible to compare different models of cards by this indicator: differences in theoretical speed usually quite correspond to the difference in actual speed.

Write speed

The maximum speed for writing data to a memory card.

High write speed is important for tasks that involve storing large amounts of data in a limited amount of time. However, note that this paragraph indicates the theoretical maximum speed for perfect conditions; in fact, this value can be noticeably lower. Therefore, the characteristics of memory cards also indicate the minimum guaranteed write speeds in different modes — the general speed class, the UHS class, the video recording class and/or the class for applications. All of them are described in more detail above. However, you can also evaluate the capabilities of the carrier by the overall speed: other things being equal, a card with a higher theoretical speed will work faster in fact.

As for specific values, speeds from 4 MB / s and from 6 MB / s are practically not found nowadays, from 10 MB / s and from 16 MB / s can be called average indicators, from 50 MB / s — above average, and the fastest models have a maximum write speed of 100 Mbps or more.

Manufacturer's warranty

Manufacturer's warranty provided for this model.

In fact, this is the minimum service life promised by the manufacturer, provided that the operating rules are followed. Most often, the actual service life of the device turns out to be significantly longer than the guaranteed one. But an indicator of 5 years suggests that the memory card is more likely to be lost or become irrelevant. You can also find a lifetime warranty, but in this case it is better to clarify the details of what it covers. And in any case, it implies a certain period of time, although measured in decades. In addition to confirmation of reliability, such a guarantee allows you to contact the supplier after a while to eliminate possible problems (not mechanical, of course). But the difficulties in carrying out this procedure (representative offices are located only in large cities) and the rare cases of need for this (after all, it is easier to buy a new flash drive, with the exception of vital information on the old media) make the lifetime warranty more of a marketing ploy than a cool feature.
SanDisk Extreme V30 A2 microSDXC UHS-I U3 often compared
SanDisk Ultra 80MB/s microSDXC 320x UHS-I often compared