Geekzone: technology news, blogs, forums
Guest
Welcome Guest.
You haven't logged in yet. If you don't have an account you can register now.


Forums › Off topic › MicroSD cards and how to differentiate between them?
danepak

1124 posts

Uber Geek
+1 received by user: 85


#289340 31-Aug-2021 09:43
Send private message

I'm looking to buy a 128GB microSD card for my daughter's Chromebook.

 

One website (based in NZ) lists the SanDisk Ultra 128GB Micro SD Card SDXC A1 UHS-I 120MB/s memory card for $25.25.

 

Another website (large NZ retailer) lists the same card for $59.99. This retailer is normally very competitive with pricing.

 

The cards look identical. Both are red and grey. Both have the same writing on the card. Am I missing something?

 

 

 

Also, I saw another SanDisk Ultra card, but where the top is white and the bottom is grey. Almost identical, apart from the red one has a small 1 listed next to MicroSD and also A1 written.

 

 

 

 

 

Create new topic

This is a filtered page: currently showing replies marked as answers. Click here to see full discussion.

Oblivian
7347 posts

Uber Geek
+1 received by user: 2117

ID Verified

  #2769179 31-Aug-2021 09:59
Send private message

More or less, stock age vs Speeds and realtime video capabilities.

 

UHS-I and UHS-II cards can use UHS Speed Class rating with two possible grades: class 1 for minimum write performance of at least 10 MB/s ('U1' symbol featuring number 1 inside 'U') and class 3 for minimum write performance of 30 MB/s ('U3' symbol featuring 3 inside 'U'), targeted at recording 4K video.[108] Before November 2013, the rating was branded UHS Speed Grade and contained grades 0 (no symbol) and 1 ('U1' symbol). Manufacturers can also display standard speed class symbols (C2, C4, C6, and C10) alongside, or in place of UHS speed class.

 

UHS memory cards work best with UHS host devices. The combination lets the user record HD resolution videos with tapeless camcorders while performing other functions. It is also suitable for real-time broadcasts and capturing large HD videos.

 

https://www.sdcard.org/developers/sd-standard-overview/application-performance-class/

Create new topic








Geekzone Live »

Try automatic live updates from Geekzone directly in your browser, without refreshing the page, with Geekzone Live now.


Updates »

Are you subscribed to our RSS feed? You can download the latest headlines and summaries from our stories directly to your computer or smartphone by using a feed reader.








RSS feeds
Main feed
Forums feed
Copyright
©2002-2026 Geekzone®
Site features
Geekzone BI dashboard
Geekzone Badges
Geekzone Status Page

 

Site Information
Subscribe to Geekzone
Privacy Statement
Forum Usage Guidelines (FUG)
Advertising
Trademark and copyright