Hello guys,
I'm looking for experts which could suggest me a microSD card of at least 32GB, with the fastest random read & write times.
I don't care about the sequential speeds which the manufacturers use for their advertising, random read & write is more important (which never gets advertised) for smartphones if you care about the faster usage of programms/games etc.
Did anyone test by himself or know a test from somewhere, where microSD cards exclusively got tested in a S4? I really look for the "perfect" card, with the fastest random read/write times as possible.
up
While the headline might seem familiar with the same keywords of Samsung producing 128GB flash storage modules, this story is different from the previous one. Last month, Samsung announced a 128GB storage based on the new and anticipated UFS 2.0 standard and targeted for flagship high-end devices — it made its debut in the Galaxy S6 and S6 Edge. This new module, however, is based on the established eMMC standard and it will appear in mass market mid-range devices.
If you missed the previous explanation about the difference between eMMC and UFS, you should know that eMMC is the de-facto standard for storage on smartphones right now. It differs from the swanky UFS 2.0 in two areas: it can't read and write simultaneously and it doesn't have a Command Queue system to sort and re-order the tasks it needs to perform. By comparison, it is slower than UFS, but it remains significantly faster than external MicroSD storage.
Samsung's new 128GB flash uses eMMC 5.0 (there's a newer 5.1 standard that is slightly faster), and can deliver sequential reading speeds of 260 MB/s, random reading at 6000 IOPS (input/output per second), and random writing at 5000 IOPS. It is a "value-focused" module and the company's aim is for "mid-market smartphones [to] be able to increase their storage capacity to 128GB." There's no word on when this module will start appearing in phones and tablets, but you should hear about 128GB devices from Samsung and other OEMs later in the year.
It's worth noting that Samsung also highlights the speed gains compared to external memory cards in its press release, so you might want to take the hint that the company's devices that will be equipped with this new flash module won't have a MicroSD slot. Financially, it makes a lot of sense given the mark-up difference that added built-in storage incurs compared to external storage. And Samsung can rake in that extra casheesh instead of sending it SanDisk's (or Kingston's or other companies') way.
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http://www.androidpolice.com/2015/0...rage-module-for-mid-range-phones-and-tablets/
Complaining about the lack of micro SD is still a thing? I thought we went over this... multiple times...
It's time to accept the reality that all of the S6 versions will not have micro SD. If you need a micro SD then simply grab another phone.
I don't buy it. Does that mean USB OTG isn't going to work, either?
lopri said:
I don't buy it. Does that mean USB OTG isn't going to work, either?
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Why wouldn't it work?
I actually am not bothered by lack if sdcard support as long as bigger storages wont be overpriced like hell. Anyways personally, for me speed and responsivness > sd card support
Sent from my HTC One using XDA Free mobile app
kerelberel said:
Why wouldn't it work?
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Well, if it's too slow compared to the built in flash...
istperson said:
Well, if it's too slow compared to the built in flash...
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There's nothing in the software which prohibits it from being discovered by a file browser. It works but read/write speed in the music/video player apps is slower than if the files were on the internal storage themselves.
So, is this a confirmation on a feature which may or may not exist, on a phone which doesn't currently exist?
The SD card was an issue when the phone only had 8 or 16 GB of internal storage. Now that the phone has minimum 32 GB with an option of having 64Gb (of much faster storage) for a manageable price I don't think the SD card is a problem anymore. Most people i know only use a 32 GB SD card anyway.
Looks like USB OTG will work fine:
http://www.androidcentral.com/dealing-local-storage-backups-galaxy-s6-and-galaxy-s6-edge
kerelberel said:
There's nothing in the software which prohibits it from being discovered by a file browser. It works but read/write speed in the music/video player apps is slower than if the files were on the internal storage themselves.
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It was supposed to be a joke.
Samsung's Galaxy S6 Active may come with a microSD card slot, but at a high cost
Reddit user “garshol” sat down with a Samsung rep a couple of days ago to discuss the new Galaxies, and the Active was among the topics at the table. The ruggedized version of Sammy's latest flagship will boast “similar” hardware under the hood, according to the report, and will come with an SD card slot. However, it will also come at a cost – according to garshol's posts, the Active's camera will be a lower class than the one on the flagship model, but at least it may still have OIS. Additionally, the endurance model will not have a fingerprint scanner, and will lack a heartbeat sensor.
http://www.phonearena.com/news/Sams...-microSD-card-slot-but-at-a-high-cost_id67615
These tradeoffs would be acceptable to me. I'm curious about what the dimensions and weight of the phone will be.
I've read a few comments on some sites that suggest including an SD card slot and its associated controller slow down the overall performance of a phone, even if there's no SD card inserted. I have no idea if this is true, but if so, I can at least understand why the S6 lacks SD from a performance standpoint. I've assumed that Samsung's assertion that SD was too slow for the S6 was because they didn't want benchmarks/comments that the built-in internal storage is lightning fast, but SD card is still slow. More of a "we don't want any suggestions that ANY aspect of the S6 is slow", even though most users are well aware of SD's limitations and are primarily interested in simply having the ability to easily expand the storage space despite it not keeping up with the phone storage speeds.
I definitely will not be getting the S6 due to the lack of removable battery and lack of micro SD slot. I think that HTC and LG are going in the right direction here.
Because of the ridiculously small internal memory of the gt-s5360 (Samsung Galaxy Y "Young"), I have to keep as many apps as possible on the SD card using link2sd, so I'm interested in all-around SD card performance, not just write speed.
I've been searching the web and can't find actual specs on what the maximum SD card speeds are that this phone can actually use. I know that it supports up to 32GB, and that the fastest SDHC cards (including UHS U1 and U3) should all be 'compatible'. At least, that's what the SDHC spec implies.
wikipedia: /Secure_Digital#Compatibility
But what can the phone actually benefit from? Here are the labels and cutoffs I know of.
wikipedia: /Secure_Digital##Speeds
In other words, I think that if this phone's bus speed is 25MB/s or slower, then there's no difference between, say, how a UHS class 10 and a non-UHS class 10 would perform.
I am attempting to locate the interface specification for the microSD card slot in the Galaxy S7/Edge such that I can restrict my search for cards that meet - but preferably don't exceed - the maximum throughput for which the device is capable.
As such, I've been trying to find if Samsung has published any interface specifications for their microSD card slot - to no avail.
Has anyone come across a definitive statement for this?
As an example of what this specification might reveal is (among others) whether or not the device can support UHS-II storage, or if that would simply be throwing away additional money for no gain
So far all I've been able to find is the rating for the maximum addressable storage, at 200GB.
Thanks to anyone who has can direct me to such a document.
-afh3
Hey, did you find out anything more? I'm in the same situation and was looking for a microsd to keep stuck inside the phone. I don't think I'll need a super expensive one, but was wondering if anyone knows or has some real information on this phone's microsd slot spec and performance.
I'm most likely going to get a Samsung EVO+ 64GB $20 since it gets good reviews on random small read and writes.
edit: The phone's microsd slot is faster than USB 2.0. I found a good thread here.
http://forum.xda-developers.com/s7-edge/accessories/suggestions-microsd-t3321569
Ahh, the same one you replied, LOL.
I might look for faster ones than the EVO+ now. The sequential 20MB/s seems kind of slow compared to what others can do, but it has excellent random write speed. Hmm... searching for a good deal now.
Nope. But I did find this: http://forum.xda-developers.com/s7-edge/accessories/suggestions-microsd-t3321569
From that thread, the empirical evidence indicates that your best bet will be a card with the UHS-I bus and a speed rating of U3.
I'm going with the either the SanDisk Extreme Plus (64 GB max) or the Samsung Pro+ 128 GB as they meet both ratings.
I'm getting a fast microSD card for my S5 and I was just curious how it compares to the speed of the S5's own 16 GB of storage? Has anyone benchmarked the read/write performance of the S5? I've also read there were two suppliers that can be distinguished by "CID 11" vs "CID 15", so I'm wondering if there's a difference in performance between the two variants?