Micro SD card question for Smart Phone

Cameron203 · Post by **Cameron203** » Sun Oct 19, 2014 9:23 pm

I'm currently looking at two different capacity cards the 64gb model and the 128gb model. From all the cards I've reviewed the 64gb models blow the 128gb models away in read/write speeds. My question is I'm purchasing a new Note 4 on Thursday and how much of a "real world" difference between the two cards will I notice? I take a lot of pictures and a lot of video. Thanks.

Faust · Post by **Faust** » Sun Oct 19, 2014 10:28 pm

The capacity of flash media is not what determines read/write speeds. You need to look at what class it is.

http://en.wikipedia.org/wiki/Secure_Digital

Cameron203 · Post by **Cameron203** » Mon Oct 20, 2014 9:20 pm

Faust wrote:The capacity of flash media is not what determines read/write speeds. You need to look at what class it is.

http://en.wikipedia.org/wiki/Secure_Digital

LOL. Maybe I didn't word it correctly. When comparing the 64gb and 128gb micro sd cards most are all class 10's, the 64gb capacity card have much higher read/write speeds when compared to the 128gb models though. (I just read Lexar is coming out with a 95mb read speed due out Nov. 1.) As of right now the fastest 128gb I've seen is like 48mb read and the write was averaging around 10mb. My question is when comparing the two cards not the capacity but the superior read/write speeds that the 64gb models possess will I notice a real world difference via a cell phone? I hope that makes better sense. Keep in mind the Note 4's specs 16MP camera and full 1080p recording. Thanks

Mark · Post by **Mark** » Mon Oct 20, 2014 9:29 pm

1080p @30fps, 17Mbps, AAC 121kbps
1080p @60fps, 28Mbps, AAC 121kbps

both those cards are well over the needed speed

the cell phone will compress the video while recording

mine puts out a video of about 18Mbps

wow, after a bit of goolging, i didn't know the note 4 can record in 4k, not sure on the requirements for that though

Cameron203 · Post by **Cameron203** » Mon Oct 20, 2014 9:45 pm

Thanks very much. One more question, real world use will I notice a difference between these two cards when used with smartphone?

Sandisk 128gb 30mb read
http://www.amazon.com/SanDisk-Ultra-Mic ... o+sd+128gb

or this one

Sandisk 128gb 48mb read
http://www.amazon.com/gp/product/B00M56 ... PDKIKX0DER

Cameron203 · Post by **Cameron203** » Mon Oct 20, 2014 9:52 pm

Mark wrote:1080p @30fps, 17Mbps, AAC 121kbps
1080p @60fps, 28Mbps, AAC 121kbps

both those cards are well over the needed speed

the cell phone will compress the video while recording

mine puts out a video of about 18Mbps

wow, after a bit of goolging, i didn't know the note 4 can record in 4k, not sure on the requirements for that though

Yea it does 4k. That's what has me worried. Any ideas?

Mark · Post by **Mark** » Tue Oct 21, 2014 6:17 pm

i think you should be looking for the faster write speed, not the read, at least for recording video

Cameron203 · Post by **Cameron203** » Tue Oct 21, 2014 8:44 pm

Mark wrote:i think you should be looking for the faster write speed, not the read, at least for recording video

That's what I was thinking. So I should sacrifice capacity and go with the faster write speeds of the 64gb cards.

Mark · Post by **Mark** » Tue Oct 21, 2014 8:59 pm

Cameron203 wrote:That's what I was thinking. So I should sacrifice capacity and go with the faster write speeds of the 64gb cards.

sorry but i really have no idea on what 4k video recording on that phone requires, maybe search on some note 4 forums if they exist ?

Mark · Post by **Mark** » Tue Oct 21, 2014 9:00 pm

https://www.youtube.com/watch?v=mGa5lLjfUUQ

Cameron203 · Post by **Cameron203** » Tue Oct 21, 2014 9:05 pm

Mark wrote:sorry but i really have no idea on what 4k video recording on that phone requires, maybe search on some note 4 forums if they exist ?

I've looked haven't seen anything that relates to my question. Think I'll just grab a 64 gb card with fastest write speed I can find. The 128gb counter parts seem like they are at least a month away.

Mark · Post by **Mark** » Tue Oct 21, 2014 9:05 pm

Cameron203 wrote:I've looked haven't seen anything that relates to my question. Think I'll just grab a 64 gb card with fastest write speed I can find. The 128gb counter parts seem like they are at least a month away.

look up one post

Cameron203 · Post by **Cameron203** » Tue Oct 21, 2014 9:39 pm

Mark wrote:look up one post

I missed that earlier. Just watched it, I was hoping it would be more in depth. But I read this "It seems like some people don't understand bits and bytes. Each byte is 8 bits. 4K on the Note 4 is 50Mbits (roughly 6MBytes/sec). A class 10 card is good up to 10Mbytes/sec (or 80Mbits/sec). Plenty fast for 4K. 4K is shot and recorded directly into SD card without conversion. That's all without UHS-I." So I'm definitely getting the 128gb card, did you see how fast that 4k ate up the memory? Ouch.

Thanks very much.