Just an off the wall question for everyone. What kind of micro SD card are you guys using? Anyone try a class 10 card versus a class 6 card and notice a different in the Vibrant??
Still using the standard..don't see a point until apps2sd is enabled...at that point ill probably just use the class 6 8gb from my mt3g
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zenlakin said:
Just an off the wall question for everyone. What kind of micro SD card are you guys using? Anyone try a class 10 card versus a class 6 card and notice a different in the Vibrant??
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It's kinda complicated but here are a few things to note. First most people notice a decrease in speed when going from a 8gig class 6 to a 16gig class 6. This has to deal with the fact phones only regulate a certain amount of voltage to the microsd slot. In order to get more storage into the same amount of space more voltage is needed to keep it running at a class 6 rate of speed. The reason the phone doesn't adjust it's voltage is because it causes more heat (which can of course cause damage to the phone) and it waste more battery.
Second because of this voltage regulation you will never notice the difference between a class 6 and a class 10 card while inserted into the phone unless they figured out how to get class 10 speeds on lower voltage. So this means that you should never read stats presented by the manufacture and actually try to get people who own the card to do a speed test. If we can get every card benchmarked while inserted into a phone then we can have a better understanding of what card is actually faster.
what's the best and most suitable SD card class for running android?
what i understand (and correct me if i'm wrong) higher class cards are faster but take more battery power so causes shorter battery life and heat.
lower class cards on the other hand are slower but consume less energy.
suzaku said:
what's the best and most suitable SD card class for running android?
what i understand (and correct me if i'm wrong) higher class cards are faster but take more battery power so causes shorter battery life and heat.
lower class cards on the other hand are slower but consume less energy.
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It's really all about preference, but I think a class 4 will be more than enough. I've read that class 6 or more is only really needed if you plan on using the card on a camcorder for hd recording, but I just ordered a class 6 16GB myself
I haven't tried any nand android yet, but i'm start thinking of using full android w/out winmo. The reason for that its just that the performance of my android sd build is getting slower in these few days. Laggy sometimes. Not just that, even my battery is kinda drain quite fast too.. the average battery usage now is like 9ma - 20ma on idle. It used to be like 1 - 4 ma on idle.. I don't know exactly why. 3rd party software problem or maybe i got too many of software/games which leads to a high transfer rate on SD which affect the OS operation (laggy) and drains the battery.
So from your experience:
1. Which is better nand or sd? why?
2. What is the advantage and disadvantage using nand and sd boot?
3. Any difference between nand n sd build in terms of performance?
4. What would you suggest for me in order to remove the lag and high battery consumption on my android sd build?
jzack said:
1. So from your experience, which is better?
2. What is the advantage and disadvantage using nand and sd boot?
3. Any difference between nand n sd build in terms of performance?
2. What would you suggest? Fix the battery leaks and the laggy thingy? How? I'm currently using SD Sandisk 16Gb class 4.
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1/ can't say cause if you have 1-4mA at idle it's good.
2/ no WinMo (advantage if you don't want it, faster boot time, no risk to receive calls or SMS in WinMo.. disadvantage if you want to go to WinMo sometime)
3/ I imagine NAND is better for battery consumption... but your 1mA at idle show me the opposite.
2/ don't understand your question...
Don't understand your SD comment. 16Gb is good, class4... hum never feel a noticable difference between classes... but all is in NAND for me.
truc007 said:
1/ can't say cause if you have 1-4mA at idle it's good.
2/ no WinMo (advantage if you don't want it, faster boot time, no risk to receive calls or SMS in WinMo.. disadvantage if you want to go to WinMo sometime)
3/ I imagine NAND is better for battery consumption... but your 1mA at idle show me the opposite.
2/ don't understand your question...
Don't understand your SD comment. 16Gb is good, class4... hum never feel a noticable difference between classes... but all is in NAND for me.
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thanks for the suggestion and answering the question.. i edited something on the thread to make it more understandable.
Ok, I never made some "serious" measurement regarding anything, so my advices will be based only on my feeling.
I tried Android on SD until I convince myself that I prefered Android.
So I choose the NAND to:
- boot faster (I gain the WM boot time)
- reduce my battery consumption (I put all in NAND to reduce the SD access)
- have the ability to remove the SD with OS booted
- performance difference... I really don't know. I don't know the memory techno of the two. RAM is faster... but NAND and SD, for me the techno are close so...
What i'm close to be sure is that even if you don't put an OS in NAND it will be always powered by the phone. So waste of energy. If the OS is not stupid, I hope it has the ability to cut the power of the SD when not in use. If it's the case... less consumption. If not, the dev is stupid... and my consumption will be the same.
My feeling is that the battery life is now very close to what I had with WM.
My advice... test a NAND.
Don't judge the battery life before few days. the first days it's not very good, you can feel it only after few days (looks like auto calibration of the system...).
Second advice. If you don't want a Sense build, test this one:
HyperDroidGBXv4.0
I don't say it's the best. Comparison between build/dev are stupid as a build match a "need". The best build for me may not be the best for you.
So I like this one, that's all.
truc007 said:
Ok, I never made some "serious" measurement regarding anything, so my advices will be based only on my feeling.
I tried Android on SD until I convince myself that I prefered Android.
So I choose the NAND to:
- boot faster (I gain the WM boot time)
- reduce my battery consumption (I put all in NAND to reduce the SD access)
- have the ability to remove the SD with OS booted
- performance difference... I really don't know. I don't know the memory techno of the two. RAM is faster... but NAND and SD, for me the techno are close so...
What i'm close to be sure is that even if you don't put an OS in NAND it will be always powered by the phone. So waste of energy. If the OS is not stupid, I hope it has the ability to cut the power of the SD when not in use. If it's the case... less consumption. If not, the dev is stupid... and my consumption will be the same.
My feeling is that the battery life is now very close to what I had with WM.
My advice... test a NAND.
Don't judge the battery life before few days. the first days it's not very good, you can feel it only after few days (looks like auto calibration of the system...).
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yeah same goes for sd boot. The battery life is kinda great in 1st month.. but idk why it started to lack in these few days.. the phone should be like 2 days or 3 on my average usage.. but now it only survive in just 1 day.. thats why i was thinking about moving fully on android since i used it daily..
truc007 said:
Second advice. If you don't want a Sense build, test this one:
HyperDroidGBXv4.0
I don't say it's the best. Comparison between build/dev are stupid as a build match a "need". The best build for me may not be the best for you.
So I like this one, that's all.
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Click to collapse
yeah well thanks.. rom is not the issue.. its okay with any rom.. i actually just wanted to know the difference in terms of performance and battery life between nand n sd.. u really get my point.. so there is.. guess i'll go for nand then.. thanks.. really appreciate it..
You missunderstood what I said regarding battery life with NAND. Just after flashing you will be disappointed. The battery will not be good.
After few days only you will have the real one.
I never encounter what you describe with SD build. I think I never keep one long enough (I was a flash addict).
I got a PNY 16gb class 10 microsd card from Play.com last week for my SGS2.
I've read on these forums that higher speed rated cards have different charateristics, i.e. trade off access time for throughput. SD tools confirmed very fast throughput (13MB write/24MB read) however after putting the card in and putting about 2gigs of content on it, the phone started to behave very strangely.
The phone would get very hot with no obvious activity and remain very hot with the battery running down very quickly. Sometimes randomly, but always being triggered by SD Tools (which would hang and have to be killed with task manager).
I had been suffering random reboots (about twice a week) before then, so to rule out a faulty phone I had it replaced for new at car phone warehouse.
However, the exact same behaviour with hot phone, battery running down alarmingly quickly happened with the new one. Only way to resolve was to pull the battery.
I've since swapped back to an old 8gb class 6, which while a tad slower (9MB write/19MB read) doesnt cause the phone to behave badly.
Maybe it´s the app and not the SD card......................
Perhaps a stupid question, but I was wondering if running CM7.1 from an SD card will noticeably drain the battery more than running it from the internal EMMC? Is there any benefit battery wise to running CM7 on EMMC?
Thakns
ididitforthenookie said:
Perhaps a stupid question, but I was wondering if running CM7.1 from an SD card will noticeably drain the battery more than running it from the internal EMMC? Is there any benefit battery wise to running CM7 on EMMC?
Thakns
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SD cards are very low power devices. They only draw power when being read or written to. I do not think you would notice any difference. The internal storage device is also an SD card, just permanently installed (emmc - embedded multi-media card). Besides, you probably would have an SD in the slot anyway. But some say there is a slight speed difference, especially for certain SD cards.
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