I want to get myself a new SD Card for my Magician:
I will choose between a standard 1 GB SD Card and the SanDisk UltraII SD 1GB
First of all, does it really make the difference if i take the UltraII? How much faster is it anyway? It would cost me almost 50% more.
Secondly, can the Magician even handle the Ultra? Are cards up to 2GB even supported?
Or should I consider a bigger card?
Currently I've got a 256 Sandisk standard....
SD cards
In general you probably won't see the speed deference between the basic and ultra on a PDA, because of the speed of the interface.
If you use a card reader (using USB 2 interface) then you will see the speed increase.
Personally, I've just bought a Sandisk 1GB Ultra plus card:
http://www.picstop.co.uk/Secure-Digital-(SD)/SanDisk-Ultra-II-(USB)-SD-Plus-Card---1GB
Will have to wait and see how good it is!
Apparently 4GB sd cards are coming soon, which should drop the price of the 1GB cards even further.
DS
If you going with a 2gb card - go with the sandisk ultra... I purchased an A-Data 2gb 150x and it does not work.
SanDisk Ultra are good cards.
I was told when I bought my phone that the Legend is optimized to work with up to 32GB MicroSD, but the transfer rate of data and general data speeds are at peak with certain capacity MicroSD cards. Has anyone else heard this or similar?
It just depends on what class you get, which will improve transfer rates, for example I have a class 6 8GB in mine now and it flies. btw the higher the class the better (the class is displayed with a circle around it on the card.
Sent from my HTC Legend using XDA App
That's not completely true.
The card's class isn't it's real speed, but the guaranteed one (in read AND write).
I remember having seen a test about µSD cards which shown that Sandisk are one of the best brands.
I bought a Sandisk 8GB "Ultra" micro SD for 20 bucks, and even though it's only class 2, it can go up to 20MB/s read and 7-8MB/s write (in case of large files of course).
I'm sorry to report that I've returned the Kingston Class 4 32Gb microSD card for its failure to perform.
Performance writing to this Kingston card (from a desktop PC, card in either the N1, or the PC's card reader) was ~820KB/Sec
Writing the same data files to a Sandisk Class 2 16Gb card I achieved > 1.5MB/sec - i.e. approx twice as fast.
(PC is Acer Quad core 2.6Ghz jobbie with 8Gb RAM running Windows 7)
I found it really hard to get 4MB/sec out of the Kingston card - and only achieved it with 1 of the test options on CrystalMark. (write 1Gb sequential files)
When I tried this test with the 16Gb Sandisk class 2 card I got 10MB/sec. Clearly the SanDisk isn't a class 10 card - so I'm guessing the Crystal benchmark test isn't completely appropriate for SD card writers!.
I supplied Kingston with the packaging details / photos etc and they confirmed that it IS a real Kingston class 4 card. They agreed that performance should be better. LamndaTek clearly agreed too - after they received my return and tested it they gave me a full refund. (32Gb £83.66 (Inc VAT)). (Many thanks guys)
I guess the card was faulty.. but I might just be placing my trust in Sandisk now, as I've never had any problems with their cards.
I just thought that you all should know..
Graham
did you test it with a card adaptor or from the nexus one?
Also, if you're writing hundreds of small files vs one large file it makes a difference.
I think it was just a defective card.
Even the POS 32Gb cards floating around out there write at faster than 800kb/sec mb/sec.
SanDisk suck!
I will never buy any sandisk flash,sd card, micro again.. they have the worst CS i have ever delt with.. THey stand on their High Horse thinking their **** dont stink just because they said they only have a 1% defective rate.. which is crap if you ask me.. i went through some many defective flash drives used as keeping files on them and music to play in my scion xb.. So pretty much they told me i was mis using the device.. so i told them i would never buy from them..
so Kingston all the way now. they have the best CS i have ever delt with.. good day!
mynameisjon said:
did you test it with a card adaptor or from the nexus one?
Click to expand...
Click to collapse
I tested it with both options - the supplied adaptor - and also in the Nexus 1 - couldn't get it faster that I quoted, in any combination. Even tried a reformat - still no good.
Also, if you're writing hundreds of small files vs one large file it makes a difference.
Click to expand...
Click to collapse
It was a mixture of file sizes for the main copy, i.e. the contents of the 16Gb drive over to the 32Gb drive. About 14Gb were music files which come in at about 4Mb each.
As the other guys said above Kingston customer services were very responsive once they identified the card as genuine.. but LambdaTek were even more so.
I've still never had a Sandisk product give me an error though (I have 3 cards from them)
G.
I've used SanDisk for years without issue. Also been extremely happy with Lexar. Kingston, on the other hand, has been a complete letdown to me! A couple years ago, I bought a 4gb class 6 Kingston card for my digital camera. I didn't run any controlled benchmarks, but real-world use showed only about 2-3mb/sec transfer rates, which I thought was kind of slow. Also, as I was using a card reader instead of just plugging my camera in every time I needed to move pictures, the card was constantly being moved between devices. This proved fatal to the card, as the cheap plastic began to come apart. Never ever have I seen that happen to *any* SD card, even the cheap no-name ones! It started with the little tabs between each of the contacts, but didn't take long before the top and bottom of the card had begun to split. After a few months, the Kingston card was no good - all because of a disappointing casing. I wasn't rough with the card - I didn't treat this card any differently than others. In fact, I still have a 64mb SanDisk card from several years ago that's still going strong (great for sharing some jpgs, docs, etc.) So it might be worthwhile staying away from Kingston altogether...
Brands I've been happy with:
SanDisk
Lexar
Duracell
Transcend
Brands I've been disappointed with:
Kingston
so what is the deal with the N1 and its SD card speed?
i have a Transcend 8gb Class 6 card, i bought it for my G1 and recently got a N1.
on my G1 i would get an as expected 6 mb/sec or better copying files to/from it. in the N1 its never much more than 2mb/sec at most. this is apparently just when copying files via usb though
i just ran the app j bench mark 1.0.
when set to 10mb (2kb buffer) the default and lowest test setting i get
1.5mb sec write 2.5mb sec read
when set to 100mb (8km buffer) i get
6.16 mb/sec write
10.34 mb/sec read
so clearly internally the phone can and does handle the card at full speed but connected to PC's it does not.
and before anyone says it yeah i know just use a card reader to transfer large files.. whatever shouldn't need to do that imho
(megabytes not bits i am quoting here, i know the difference)
I have sandisk 16gb class 2 and under android 2.2 I gоt 1.5 mb/s and under android 2.1 I gоt 7-8 mb/s
gf_gollum said:
I'm sorry to report that I've returned the Kingston Class 4 32Gb microSD card for its failure to perform.
Performance writing to this Kingston card (from a desktop PC, card in either the N1, or the PC's card reader) was ~820KB/Sec
Writing the same data files to a Sandisk Class 2 16Gb card I achieved > 1.5MB/sec - i.e. approx twice as fast.
(PC is Acer Quad core 2.6Ghz jobbie with 8Gb RAM running Windows 7)
I found it really hard to get 4MB/sec out of the Kingston card - and only achieved it with 1 of the test options on CrystalMark. (write 1Gb sequential files)
When I tried this test with the 16Gb Sandisk class 2 card I got 10MB/sec. Clearly the SanDisk isn't a class 10 card - so I'm guessing the Crystal benchmark test isn't completely appropriate for SD card writers!.
I supplied Kingston with the packaging details / photos etc and they confirmed that it IS a real Kingston class 4 card. They agreed that performance should be better. LamndaTek clearly agreed too - after they received my return and tested it they gave me a full refund. (32Gb £83.66 (Inc VAT)). (Many thanks guys)
I guess the card was faulty.. but I might just be placing my trust in Sandisk now, as I've never had any problems with their cards.
I just thought that you all should know..
Graham
Click to expand...
Click to collapse
Had the same problem... RMA'd it with newegg and the replacement comes in tomorrow... I hold out hope.
Sandisk more me, no problem so far
My replacement Kingston class 4 holds out class 2 speeds on write of large files, less than that on write of small files. Blazingly slow on write, but faster on read than my class 6 8gb sandisk...
All in all... I can live with it for now...
The article below is an interesting read regarding Kingston and the sdcard market in general.
http://www.bunniestudios.com/blog/?p=918
So amazon has a good sale right now on Micro SD cards.
Lexar 32GB Class 10 microSDHC 45MB/s for $12.99
Lexar 32GB Class 10 microSDHC 95MB/s for $24.99
I think that the 45MB/s should be sufficient for everyday use. Would the 95MB/s one have any benefit for the Z3 Compact?
The 45mb/s card is enough, you really won't see faster speeds since smartphones don't run their sdcards at maximum voltage for obvious reasons, you'll only see those speeds on pc's.
Why does it come to me when I insert a sd card "the sd memory card is too slow for your device, can have failures when running applications"? Is a sd card from 32GB to 70MB / S
Thanks!!
What SD card do you have? The SD card you have might be too slow in terms of write speed, since Class 10 SD cards are not all the same (confusingly). I think you'll want to buy a micro SD card that has at least Class 10 UHS Speed Class 3 (UHS-3), particularly if you want to use it as adoptable storage. UHS-3 has a minimum write speed of 30 MB/s and the UHS-3 marking can be seen on the packaging and SD card as a U with a 3 inside. I've seen UHS video SD cards (e.g. v30, v60) around that are potentially faster than UHS-3 but I'm not sure if our Moto G4s can make use of the faster speeds.
https://www.sdcard.org/developers/overview/speed_class/ and https://www.sdcard.org/consumers/choices/speed_class/index.html have a good overview, and as an example of what you could buy, https://www.amazon.co.uk/SanDisk-Extreme-microSDHC-Memory-Adapter/dp/B01HXR511A/