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SD classes and functions


Tablets and external storage: SD classes and functions

Written by

February 2, 2016

Memory and storage capacity have been two of the fastest growing parameters in recent years. The consolidation of portable media has led to the development of many ways to increase the capacity of the devices, which are already light years away from those existing only a few decades ago and from those terminals that could occupy rooms Whole and needed a lot of resources and power to perform the tasks that currently require only seconds or even less.

Within these characteristics, we have seen an increase in RAM so much of tablets like smartphones, where we can already find terminals with a 4, 6 or even 8 GB capacity in the case of the highest, and at the same time, they bring hard drives that can house millions of songs, videos and photographs. However, in an attempt to achieve almost unlimited storage, we find ways to expand this capacity already high in many cases, but for many users, it may be insufficient. We talk about external memories, whose easy acquisition and variety, has contributed to our devices becoming authentic libraries where we keep part of our lives. Here are the types of SD cards more popularized and in what situations we can get the most out of them.

Nexus 9 Marshmallow RAM

SD for all types of devices

Since its appearance it does more than 15 years, the SD cards they have become next to the USB in the two most used storage media in many terminals. Since camera until computers desktops and laptops, are capable of storing large amounts of data and content in small dimensions that may vary depending on the card format. Another aspect in which they differ are in their capacity and the Transfer speed.

1. SDXC card

A very common support both tablets like in smartphones along with other formats such as Micro SD, its main feature is that it can store very heavy contents that surpass 1 GB of size. The great strength of this kind of storage is that it has several TB of capacity but they are more expensive and cannot be entirely useful if we are going to use them in portable supports belonging to the lower ranges.

SanDisk Ultra microSDXC 128 GB


Riding among the most common, the Micro SD and SDXC, its storage capacity is intermediate, reaching peaks of 32 GB. Although they appeared ago 10 years, this is one of the cards most used currently. Its biggest limitation is the fact that despite having a considerable size to save the contents, the heaviest can not exceed 4 GB. Even so, they are an interesting alternative for mid-range devices.

3. Micro SD and Mini SD

The first of this class are the ones that are more extended in tablets and smartphones. Among its strengths we highlight its size, of 15 × 11 mm approximately, and that is available in several models depending on its capacity, reaching up to 128 GB. On the other hand, we highlight the Mini SD, with dimensions somewhat larger than your partner with 21 × 14 mm but with a similar capacity. Another of the strengths of both types of cards are the fast content transfer speed. On the other hand, this type of component is where we find a greater competition Since currently, many of the big technology companies manufacture their own, such as Samsung, which, either sold separately, or on the other hand, incorporate into their models.

micro sd 128 gb