Im buying a newer memory card for my phone ..
ill choose between:
Transcend 4 GB Class 6 microSDHC Flash Memory Card TS4GUSDHC6
A-DATA Turbo 4 GB Class 6 microSDHC Flash Memory Card
All i need is 4GB i wont store music or anything ...i wanna know will higher capacity be (by any means) faster than lowr ..? ..i mean shud i get 8GB? will it make it faster?
in theory they should have almost identical speed. class only determines minimal write speed (class 6 = 6 MB/s) but it can be even doubled. it depends how lucky you are
edit: here you go http://en.wikipedia.org/wiki/Secure_Digital#SD_Speed_Class_Ratings
Another note, cheap cards (or nameless) even at class 6 will almost always be slower than a card from a good brand
Related
So i'm looking for a new Class 6 8gb SD card to replace my sandisk class 2 8gb sd.
In your opinion, what brand is best to go to, Transcend or Sandisk?
or any other brand, I would like to see options. What brand runs best with apps2sd and linux-swap? I'm currently using enomther's AOSP extpansion pack rom, but i'm thinking about moving to a HTC Hero rom, thus why I need a class 6 sdcard.
Does it really increase the overall speed of a rom?
So, in your honest opinion, which brand should I go to? Links will be appreciated, and I like amazon =D
Sandisk or A-data sd cards are the best.
Class 6 is hellofalot faster then class 2, i only have a class for now since i lost my 8gb.But you should get either one of those maybe transend if its cheaper.
I like my Transcend 8gb Class 6....just wish I could find a 8GB Class 8 or 16GB Class 10.
This is my SD card and it runs lightning fast.
.
blackknightavalon said:
This is my SD card and it runs lightning fast.
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I'm definitely going to give this a try, thanks for the help
jaboswell said:
I like my Transcend 8gb Class 6....just wish I could find a 8GB Class 8 or 16GB Class 10.
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Don't worry phones typically downclock the reader slot to keep battery consumption at a minimum. If you ask anyone to compare a 8gig class 6 vs a 16gig class 6 they will tell you the 8 gig is much faster then the 16. It's because the bigger card needs more voltage to get to the same speed as the 8 gig card due to it's more condensed package. Also this is to allow for less heat issues cause of course more voltage to the card slot means more heat.
psychoace said:
Don't worry phones typically downclock the reader slot to keep battery consumption at a minimum. If you ask anyone to compare a 8gig class 6 vs a 16gig class 6 they will tell you the 8 gig is much faster then the 16. It's because the bigger card needs more voltage to get to the same speed as the 8 gig card due to it's more condensed package. Also this is to allow for less heat issues cause of course more voltage to the card slot means more heat.
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so does that mean (in theory) that a 32gb would be super dooper slow? For linux-swap and such?
I'e never had any problems with transcend. I got my 8GB class 6 from Amazon for £14
So here is the question.Untill what speed can the cardreader of the Hero support?Class 2,4 or 6?Is there any point on getting a card above lvl2 for a phone anyway?I mean right now i have the default card on it and still i can see movies,photos play music etc pretty good without problems.Why should i choose class 4 or even class 6?
At the moment i found class 2 micro SD 16 giga for 25 euro and class 6 8giga for 19-20.Which should i pick?I am pretty sure that i can use even 16giga of data space but i am not sure if i can use higher speed rates than class 2.
You can choose any class of SD card you want, but the class 6 is faster and gives better performance. Trancend also have a 16GB class 6 card.
well i know that class 6 is faster.What i ask is if Hero can handle the speed or Class 4 or Class 6 and if there will be any real diference in performance.If yes in what application, since music , pics or even movies play good enouph in even class 2 cards.
You will notice it if you use Apps2SD and have a swap partition on your SD-card. Otherwise you won't notice the difference I guess.
Ludolf71 said:
You can choose any class of SD card you want, but the class 6 is faster and gives better performance. Trancend also have a 16GB class 6 card.
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This is a common misconception. A class 6 card is not necessarily faster than a class 2 card, because all that the class signifies is the *minimum* guaranteed sustained speed that a card can be written at.
It is perfectly possible for a class 2 card to outperform the minimums required for a class 6 card, so that a good quality class 2 card can be faster than a poor quality class 6 card.
My advice when buying an SD card is to look for independent reviews where the actual speeds are tested. For example, see here.
Regards,
Dave
foxmeister said:
This is a common misconception. A class 6 card is not necessarily faster than a class 2 card, because all that the class signifies is the *minimum* guaranteed sustained speed that a card can be written at.
It is perfectly possible for a class 2 card to outperform the minimums required for a class 6 card, so that a good quality class 2 card can be faster than a poor quality class 6 card.
My advice when buying an SD card is to look for independent reviews where the actual speeds are tested. For example, see here.
Regards,
Dave
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Very interesting
Hello everybody,
So the thing is I want to buy another sdhc for the Streak (8/16 gb) but I want to know which class to buy. With sdtools I have an average of the the following ratings with a Sandisk 16gb class 2:
Writing speed: between 5.3 / 6.4 mb/s
reading speed: 12.3 / 17.2 mb/s
1. Does a class 6 or 10 will increase the overall speed? (I know 6/10 = minimum speed)
2. Are micro sd's from brands like Adata or Transcend also reliable in class 6/10?
3. Does the streak support class 10 and is it necessary or will be a class 6 enough?
Thanks!
Ruben
For my internal memory I'm using a Patriot LX 4gb class 10 and for my external memory the best card I have found is the adata class 10 16gb...
Those are the ones that IIIIIIIII use.... but others may recommend otherwise
Some benchnarks have shown that burst read write speeds on lower class cards are higher while the class 10 cards are better only for sustained reading and writing... such as restoring a nandroid and creating a nandroid...
I still use the class 10s
Awesome, thanks! Can you maybe post your reading / writing speed with the external card in the device (sdtools or another app).
I've read that Sandisk class 4 cards perform better at random access speed but I'm also really curious if a higher class card will go over 13/15 mb writing speed, because with a class 4 sandisk (4gb) I did get a constant rating around w9/r20 mb/s
Looking for people who have benchmarked their sd cards.
I have a fairly old 32gb generic sd card, it doesn't even have a speed rating on it.
I want to use bootmanager but I'm not sure this old card is fast enough to boot off of. I'm testing with SD tools on my tbolt
I get about 6 mb/s write speed
I get about 7-9 mb/s read speed in SD tools,
I know class 10 cards can vary wildly in performance and quailty
I am wondering if anyone has recommendations for the best quality card
with the highest read/write speeds, I want to get a new card but I don't want to pay a lot of money for a card that is only marginally better than mine.
i just downloaded that program to help you out,
got
7.0 read speed (peak was 8.6)
17.6 write speed
I am a long time user for boot manager and havent had any lag issues with this sd card
sd card is
32 gb
sandisk
class 4
came with my tbolt
Hey Guys
Am looking for a suitable Microsd Class rating ( am going for Sandisk, 16 GB or 8GB) for my Motorola Photon. I am going to install a lot of games, specially those Tegra 2 ones, Max Payne and others too, and alot of apps on the phone.And i might use Link2SD to move them to the SD card to keep Phone memory less occupied.
So as to what i feel is that i'd be requiring good read/write speeds for games, plus proper loading of apps (in time, i don't want lags at all). the problem is, according to the Price, i can go for 8GB class 6 or 16GB class 4. What do u guys think i should go for? would it really matter? i know class ratings are the Writing Speeds, but who knows?
Regards
Save up for a Class 10. There is a world of difference between a class 4 and a class 10 especially when using ROMs that have the SDSpeed tweaks.
I like class 4 personally as write speed really only affects installing imho. lower write cards tend to have higher read as well. SanDisk as a brand makes Damn fine cards which I think brand makes more difference than class overall.
Sent from my mopho
@Loki,
What about a Sandisk 8 or 16GB Ultra at UHS 1 speed?
i read the following on Wikipedia about UHS Cards
"Cards that comply with UHS show UHS-I or UHS-II on the label, and report this capability to the host device. Use of UHS requires that the host device command the card to drop from 3.3-volt to 1.8-volt operation and select the 4-bit transfer mode".
Is above compliant with Motorola Photon? I cant seem to find a Sandisk card with a Class 10 rating else than this one.
@Cornelius,
i think that when playing a game, the Phone might want to Read/Write data during play times even.Reading happens all the time, but Writing would also take place. But as Loki said, i'd be interested in trying these ROMs with SDSpeed tweaks. i really want no lags at all...
Regards
it really depends on the game, but writes happen way less than reads in most cases. class 10 is more for pictures and videos in my humble opinion. most games were it matters, it's a 400+ mb 1 Time download and then massive reads.
Sent from my mopho
@Cornelius
What about apps? they would also be fine with Class 4? i use a Sandisk 16GB class 4 in my Sansa Fuze all the time, and never had a problem with it, but i dont want my phone to lag at all. Apps might need to Read and Write in real time right??
Regards
if finances are an issue, than here is a G Skill brand 32gb class 6 for $15 shipped.
http://www.newegg.com/Product/Produ...ction-_-cables-_-na-_-na&Item=N82E16820231603
usually in 99.99% of cases read is more important than write. usually writes are so small they don't matter.
Sent from my mopho
Lexar 32GB Class 10 $26
I'm averaging 11MB Write and 21MB Read on Imperium Initiatve
high write or high read its always a compromise. if your that worried about hints of lag use the smallest sdcard you can get by with.
Sent from my mopho
@Lokifish Marz
One suggestion was Class 10 microSD, and when paired up with ROMs that have SDSpeed tweaks, where does the difference lie (imagining u have experiences with class 10 and SDSpeed tweaks)? What is better than when a class 4 is used?
Plus what tool do u use to get the Read/Write speeds? i suppose its on ur phone only? Also i am thinking of pulling the trigger on an 8GB Class 10 Sandisk. I live in India and Amazon is not an option.....only ebay.in is....
@Cornelius, i agree with what u say about reading going on way more than writing, but then what about SSDs in computers? the performance boost is just because of the Increase in read speeds and not write? I know it gets pretty complex in computers, swap and pagefiles, etc, but faster HDDs mean faster computers, and even though writing happens lesser than reading on the phones, but some writing must be happening that bottlenecks the speed of the phone. am i Right? just trying to learn here from u guys.
Regards
no I'm saying a class 4 usually has a higher read speed than a class 10 but yes the big boost from ssd hdd is the read in 99% of cases.
Sent from my mopho
psgarcha92 said:
@Lokifish Marz
One suggestion was Class 10 microSD, and when paired up with ROMs that have SDSpeed tweaks, where does the difference lie (imagining u have experiences with class 10 and SDSpeed tweaks)? What is better than when a class 4 is used?
Plus what tool do u use to get the Read/Write speeds? i suppose its on ur phone only? Also i am thinking of pulling the trigger on an 8GB Class 10 Sandisk. I live in India and Amazon is not an option.....only ebay.in is....
@Cornelius, i agree with what u say about reading going on way more than writing, but then what about SSDs in computers? the performance boost is just because of the Increase in read speeds and not write? I know it gets pretty complex in computers, swap and pagefiles, etc, but faster HDDs mean faster computers, and even though writing happens lesser than reading on the phones, but some writing must be happening that bottlenecks the speed of the phone. am i Right? just trying to learn here from u guys.
Regards
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I am not sure what class 4 Cornelius is using. I don't have one but do have a class 6 Lexar from the same family as my class 10. On Imperium, the class 6 was slower than the class 10 in every aspect:
Lexar 8GB
class 6
Write- 5.8MB/s
Read- 18.8MB/s
The SDpeed tweaks, when set up correctly, improve read speeds across the board. It does tend to max out at a read speed of 20-25MB/s on Imperium. Further tuning may improve this but haven't had the time. I haven't tried any of the UHS cards yet. The big drawback with lower class cards is going to be your write speeds, the falloff on write speeds is there but not as much.
I'm not saying that Cornelius is wrong, just in my personal experience with flash storage has been different. Having used flash storage as everything from regular use to building flash storage based workstations, the lower class rating has a noticeable impact on write speeds but not so noticeable impact on read speeds on a tuned setup.
I only use SanDisk cards, used to go Kingston but they kinda fell out a while back.
Sent from my mopho
I'm using the newer Samsung cards and they make quality memory as well. As cheap as a class 10 card can be had why not go for that over a lower class card?