Class 10/UHS-1 MicroSD not fast enough for 2160p video?

[Jonnny4]

I have a 64Gb Sandisk Extreme and when I try to record video sometimes it records but takes forever to save and sometimes it gives me a message that it isn't fast enough. Aren't these the fastest on the market right now?

 

[manomic]

I have a 128 GB PNY card that is rated UHS-1/Class 10.. I can record 4k videos without any issue. Just that, it takes a couple of seconds extra to save. The card has a 60 MB/s read and 20 MB/s write in my comp

 

[Blacklac]

Class 10 doesn't mean much of anything. Find its actual write speeds.

 

[Microsoftjunkie]

No, i believe Class 10 (U3) are.


You can find some Samsung that are of this class, they are much faster than U1 at write speeds.

 

[Madam ImAdam]

Write speed is critical... I'm going to try this card with speeds up to 90 MB/s

Amazon.com: SanDisk Extreme PRO 64GB UHS-I/U3 Micro SDXC Memory Card Speeds Up To 95MB/s With 4K Ultra HD Ready-SDSDQXP-064G-G46A: Computers & Accessories

 

[Blacklac]

Write speed is critical... I'm going to try this card with speeds up to 90 MB/s

Amazon.com: SanDisk Extreme PRO 64GB UHS-I/U3 Micro SDXC Memory Card Speeds Up To 95MB/s With 4K Ultra HD Ready-SDSDQXP-064G-G46A: Computers & Accessories

Im not sure the amount of bandwidth Lumia's 4k needs, but my Samsung EVO card with ~19MB write speeds, seems to handle 4k just fine. Granted, I haven't recorded any long videos, to see if it ever chokes up.

It would appear spending for faster cards, for these phones, isn't necessary.

 

[Blenyc]

I got the Samsung EVO too.Looks like the message doesnt appears always.Probably the phone is already doin read/write jobs on card and trying to capture 4k that particular time drops the speed even more.

 

[NICK TOALE]

I find the Sandisk Extreme 64GB to be variable in performance especially as the card fills up 128GB version is excellent in comparison. Personally I find Transcend cards more reliable especially on constant speed writes for video. Sometimes if you get the card slow error wait a few seconds, try again and it should be ok.

 

[RumoredNow]

...Sandisk Extreme 64GB... if you get the card slow error wait a few seconds, try again and it should be ok.

That matches my experience. But I've only dabbled a little with 4K video. I don't have a real need for it... I understand the user base it is aimed at, I'm just not inside that grouping.

 

[Madam ImAdam]

Write speed is critical... I'm going to try this card with speeds up to 90 MB/s

Amazon.com: SanDisk Extreme PRO 64GB UHS-I/U3 Micro SDXC Memory Card Speeds Up To 95MB/s With 4K Ultra HD Ready-SDSDQXP-064G-G46A: Computers & Accessories

???

 

[RumoredNow]

I've taken a lot of pics with 1520 for the above mentioned shootout... Here are some I've really liked: