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Are we going to see the speed increase from a regular MicroSD card versus one that is HC Class 6 and such? I remember when I had my Wing overclocked to the max at a modest framerate and it was still kind of choppy on a regular SD card so maybe an SDHC will be faster... So, will the SDHC make a difference on the Dash with 6.1? Thanks in advance .
nuron said:
Are we going to see the speed increase from a regular MicroSD card versus one that is HC Class 6 and such? I remember when I had my Wing overclocked to the max at a modest framerate and it was still kind of choppy on a regular SD card so maybe an SDHC will be faster... So, will the SDHC make a difference on the Dash with 6.1? Thanks in advance .
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wanna have sm advice in this issue, since i'm preparing 2 change my microSD.
nuron said:
Are we going to see the speed increase from a regular MicroSD card versus one that is HC Class 6 and such? I remember when I had my Wing overclocked to the max at a modest framerate and it was still kind of choppy on a regular SD card so maybe an SDHC will be faster... So, will the SDHC make a difference on the Dash with 6.1? Thanks in advance .
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Benifits of a SDHC card well there bigger so theres a start and if your movies are choppy the bitrate is too high so the phone can't transfer the data ammount quick enough, so lower the bitrate of your encodes.
So other than size, I won't notice the advertised speed increase?
nuron said:
So other than size, I won't notice the advertised speed increase?
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You *might* in terms of transferring files to and from your card, but normal playback has MANY variables. To sit and say that a faster card will clear up your issue is a bit presumptuous at best.
I can be a combination of things:
- bit rate is too high
- card is too slow
- video drivers on your phone
- your phone's CPU speed
- etc
Thus, changing one thing may or may not fix your problem if that makes sense. Your phone is like your desktop computer. Just because you get a faster hard drive doesn't mean that all of your problems are solved. If your video card isn't up to the task, it won't matter how fast your hard drive is. If your CPU or video card is too slow, that will be a constraint.
Make sense?
nuron said:
So other than size, I won't notice the advertised speed increase?
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Not really as poster states above so many factors, since you are using a WM6.1 have you used OMAPClock to overclock the phone a bit as this helps? If your going for an SDHC get SanDisk as many good review and they tend to work "8GB"
Also a mojor factor is the quality of the encode since the larger it is the more data has to be transfered per frame.
Hi guys, I have a few questions about micro SD:
1) Does higher class drain more battery?
2) I just purchased a LG optimus 2x, is a class 6 enough for me? or do I need to go all the way to class 10?
3) Will higher class cause lagness to the phone?
Thanks guys
akira de aimbuster said:
Hi guys, I have a few questions about micro SD:
1) Does higher class drain more battery?
2) I just purchased a LG optimus 2x, is a class 6 enough for me? or do I need to go all the way to class 10?
3) Will higher class cause lagness to the phone?
Thanks guys
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1. From what I've seen, it seems some higher class cards drain battery more... I think the brand and quality of chips make more difference with battery, though.
2. Is class 6 enough for what? What are you using the card for? If it's strictly for taking pictures or videos, or transferring large files, or other tasks that you only need sequential write and reading, then higher class would be quicker for that. But class 6 is pretty quick with sequential reading/writing... it's up to you if you need higher. What are you using the card for?
3. Yes, higher class cards can cause lagness if you have apps or OS files on it, or if the phone is trying to access many different parts of the card quickly. Generally, for using with a phone, you will get better performance with class 2 or 4 cards. Higher class cards generally have slower access times and slower random access speed and random read and write speeds. Class 6 and 10 are better for digital cameras, or for transferring large files, but for use with a phone, where you may run apps off it or have the OS trying to access many bits of data from different parts of card, class 2 or 4 usually perform better there.
zarathustrax said:
...Yes, higher class cards can cause lagness if you have apps or OS files on it, or if the phone is trying to access many different parts of the card quickly. Generally, for using with a phone, you will get better performance with class 2 or 4 cards. Higher class cards generally have slower access times and slower random access speed and random read and write speeds. Class 6 and 10 are better for digital cameras, or for transferring large files, but for use with a phone, where you may run apps off it or have the OS trying to access many bits of data from different parts of card, class 2 or 4 usually perform better there.
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Can it be true; I suspect the "slower access times and slower random access speed and random read and write speeds" coming from higher class (10) microsd cards have to do also with bad quality, cheap (see chinese) chips that hit the market with the class 10 hoax. I hope "serious" manufacturers will produce cards that could achieve not only sequential, but also satisfactory random speeds.
Are there any sites that rank microSD cards based on random access time?
THG has some data for miniSD cards but most other sites have scattered reviews and no direct ranking.
me00016 said:
Can it be true; I suspect the "slower access times and slower random access speed and random read and write speeds" coming from higher class (10) microsd cards have to do also with bad quality, cheap (see chinese) chips that hit the market with the class 10 hoax. I hope "serious" manufacturers will produce cards that could achieve not only sequential, but also satisfactory random speeds.
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Well there are quality cards that do good at both... a Sandisk class 4 is one of the best all around I've seen. It pretty much gets class 6 sequential write speeds, and still has great access time and random speeds.
But the lag cause by class 10's and 6 isn't only because of low quality... it's caused because the higher class chips are designed to initialize the part of the card it's about to use, which gives much better sequential speeds, but hurts the access time and random read and write where many parts of the chip are accessed quickly getting small bits of info in many different parts. In this case, the initialization that the chip is doing causes it to take much longer, as it still initializes each part before accessing it. That extra step it's doing adds up to a lot of extra time when its using lots of random parts of the chip to read or write only a small bit of data.
Cards that don't do this initialization and just begin accessing immediately is obviously going to be quicker when using many different parts of card.
zarathustrax said:
2. Is class 6 enough for what? What are you using the card for? If it's strictly for taking pictures or videos, or transferring large files, or other tasks that you only need sequential write and reading, then higher class would be quicker for that. But class 6 is pretty quick with sequential reading/writing... it's up to you if you need higher. What are you using the card for?
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Most probably I will dump everything into the card, reading games from it, using gps with map files inside the sd...etc. So I guess a class 6 is sufficient. But now people are telling me even class 4 is sufficient, while some say that they observed huge different from class4 vs class 6, I got confused
May I know if android is using sequential access or random access? Or is it depends on the software?
akira de aimbuster said:
Most probably I will dump everything into the card, reading games from it, using gps with map files inside the sd...etc. So I guess a class 6 is sufficient. But now people are telling me even class 4 is sufficient, while some say that they observed huge different from class4 vs class 6, I got confused
May I know if android is using sequential access or random access? Or is it depends on the software?
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I'm confused too, after 2 months trying to find the optimum 32gb microsd for my SGS. Well, the thing gets complicated (especially for 32gb capacities) because of many reasons:
- Inconsistent quality assurance-high percentage of defect cards, sometimes of the same lot, even from top brands. This could be not only a non working card, but also small but critical problems like write failure, freeze, etc.
- Users, we don't know what we want microsd for; surely we all want to upgrade the memory of our phones, but it seems that others don't like to wait long transfering 1080p movies in the device, others want to use app2sd with android. I've come to the conclusion that right now in the market there is not a product that can do all jobs satisfactory (maybe Sandisk c4?).
- Fake cards.
Hey -
I want to upgrade to a 32gb card, what is the best brand? I know that some are faster or slower than others - how do you choose an SD card?
Thanks.
By class speed then the storage
Sent from my Incredible 2 using XDA App
I don't think I would ever see a difference in the speeds available in "classes" on my phone unless it was a defective card. I picked up this card on amazon and have been very happy.
Sure, I'd love a class 10 card but I don't think the DInc2 can even do anything with that. Nor can my bank account take it
I'm a little surprised the prices haven't come down further.
The only way you will benefit from a class 10 card is if you do photography in raw format with a requirement for rapid snapshots or 1080p video recording in a higher quality. You'd be better off saving the money by getting a good quality class 6, or even a class 4.
I'm using a Kingston Class 4 32gb card without many issues. I did have a weird issue with the 720p recording at one time, but I haven't tested with CM yet to see if it was possibly a software glitch.
Your phone will perform poorly with a class 10. Higher classes have faster sequential access times at the expense of random access lag, and the vast majority of what your phone will be doing is random access.
The only things that benefit from class 10 is things like cameras, that write huge files (sequentially) all day.
The short answer is get a class 4 or 6, Sandisk tends to have good random access stats.
Just for reference, the DINC2 comes with a a SanDisk class 4.
I wanna get a 32gb best class card but I have no idea which one to get.. Any pointers?
NeeceeBabe said:
I wanna get a 32gb best class card but I have no idea which one to get.. Any pointers?
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Basically, stay away from the cheap eBay auctions for them. You'll often get a fake-brand claiming to be SanDisk, but it's really not.
Stick with legit SanDisk or Transcend.
Amazon and Newegg have had some good deals.
AData has a true class 10 speed with 32GB. I use it on my Cowon J3 music player. It's very fast, faster than the Lexar Class 10 that I have.
http://www.adata-group.com/index.php?action=product_feature&cid=7&piid=37
nraudigy2 said:
AData has a true class 10 speed with 32GB. I use it on my Cowon J3 music player. It's very fast, faster than the Lexar Class 10 that I have.
http://www.adata-group.com/index.php?action=product_feature&cid=7&piid=37
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I hope I can find one. seems like 32gb class 10 are REALLY hard to find.
NeeceeBabe said:
I hope I can find one. seems like 32gb class 10 are REALLY hard to find.
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Here's some...
http://www.newegg.com/Product/Produ...n=micro sd 32gb&name=Class 10&Order=BESTMATCH
I'm curious: where would we see the advantage of a Class 10 card on our phones? Outside of copying files to/from them faster, I'm not sure there's anything we're doing on them that would benefit from it. Anything concrete anyone can suggest that I'm not thinking of? The photos aren't anywhere high-res enough to require it, and the camera's not capable of taking them in a fast enough burst mode to need it, and I'm assuming even the 1080p video capture doesn't need it or Samsung would have had an * in their advertising to let us know. So that leaves me to assume I could probably save some money on a lower class and be just as happy...
TurboFool said:
I'm curious: where would we see the advantage of a Class 10 card on our phones? Outside of copying files to/from them faster, I'm not sure there's anything we're doing on them that would benefit from it. Anything concrete anyone can suggest that I'm not thinking of? The photos aren't anywhere high-res enough to require it, and the camera's not capable of taking them in a fast enough burst mode to need it, and I'm assuming even the 1080p video capture doesn't need it or Samsung would have had an * in their advertising to let us know. So that leaves me to assume I could probably save some money on a lower class and be just as happy...
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So your saying a class 6 or 4 should be fine?
Would it affect flashing roms or running apps2sd?
TurboFool said:
I'm curious: where would we see the advantage of a Class 10 card on our phones? Outside of copying files to/from them faster, I'm not sure there's anything we're doing on them that would benefit from it. Anything concrete anyone can suggest that I'm not thinking of? The photos aren't anywhere high-res enough to require it, and the camera's not capable of taking them in a fast enough burst mode to need it, and I'm assuming even the 1080p video capture doesn't need it or Samsung would have had an * in their advertising to let us know. So that leaves me to assume I could probably save some money on a lower class and be just as happy...
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Sent from my SPH-D710 using XDA App
Transcend cards are great. I use them in my dslr when i film. I can not be let down when im in the middle of a production.
Class 6-class 10 will be good enough for the phone. A class 6 16gb I've read has the best overall speeds
Sent from my SPH-D710 using Tapatalk
Class 6 will do just fine. The extra expense of the Class 10 is not worth it right now. As a previous poster hinted to, the phone does not do anything fast enough to take advantage of the full Class 10 speeds.
It might help for initial file transfers if you transfer Movies to it or something like that, but how often do you really do that?
lazloe said:
Class 6 will do just fine. The extra expense of the Class 10 is not worth it right now. As a previous poster hinted to, the phone does not do anything fast enough to take advantage of the full Class 10 speeds.
It might help for initial file transfers if you transfer Movies to it or something like that, but how often do you really do that?
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Okay Thanks... should be easier to find that lol. But I don't, I just like the best of the best p
I have also looked around the net quite a bit regarding this issue (is how I came to my conclusion above). One more thing I would like to add is to make sure you buy Retail or from a known good supplier to be safe ... like Newegg... not Ebay or Amazon.
Most quality brand name cards will perform their benchmark tests at or above their ratings. This is why Class 6 is good enough for our uses right now until something better than 10 drops and pushes the 10's down in price. (Look to the future whenever you can get a deal)
Here is Sandisk's information on classes:
http://kb.sandisk.com/app/answers/d...speed-ratings-(performance)-for-sd/sdhc-cards
I doubt the cameras on our phones are recording at more than 6MB/s.
I would love to see some stats on this though.. you know, in case I'm wrong.
(which I don't think I am)
NeeceeBabe said:
Okay Thanks... should be easier to find that lol. But I don't, I just like the best of the best p
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I like your style Neecee. Hope you get your phone soon
Sent from my SPH-D710 using xda premium
JohnCorleone said:
I like your style Neecee. Hope you get your phone soon
Sent from my SPH-D710 using xda premium
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Sighs, Just might have to drink some wine to help with the pain. Letstalk SUCKS!
It speeds up everything. Application manager loads faster, faster scan at startup, apps in microsd will load faster, transfering/copying files from or to pc/internal memory, ect...
As I prepare to purchase a Gnex from Google (lets hope its not one of the defective ones!!) I found out that the phone does not have a micro SD card slot. As such I will be limited to the 16GB that comes on the GSM version I plan on buying. My question is related to the write speed of the internal memory, since I know there are different classes of SD cards. The higher the class the better the write speed which is very important for recording HD video at high bitrates. With regards to internal memory, what "class" is it comparable to? I would hate to buy a GNEX only to find out it struggles recording 40Mbps HD due to a limitation of the built in memory.
Records HD video fine. But theyre hacks to improve it. Large files transfer to it at a rate similar to my class 6. On my evo4g.
Sent from my Galaxy Nexus
When doing a benchmark I get a write speed of 8.7 MBps which is comparable to a class 9 (Doesn't actually exist) SD card. The highest class you can get is 10, so you should be fine.
Edit: This is using the Verizon (Toro) Galaxy Nexus.
Malibu,
Technically any SD card can record HD, the problems start when you get above 20Mbps. If the write speed isnt high enough you will get stuttering and choppiness. This is further amplified if you modify your camera to record at 40Mbps (obviously much better picture quality) and that is where my concern lies. You mention your other phone has similar to a class 6 write speed, would you mind testing the internal memory on your Gnex? Also, do you have a GSM or CDMA version of the Gnex?
miketoasty said:
When doing a benchmark I get a write speed of 8.7 MBps which is comparable to a class 9 (Doesn't actually exist) SD card. The highest class you can get is 10, so you should be fine.
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Ok great, this is exactly the data I am looking for! Have you modified your HD video settings, and if so, how were the results?