I have a PNY 128 gb card rated at 60 mbps. Will there be any noticeable showdown when I use it as internal memory? Thanks in advance.
pngwolffman said:
I have a PNY 128 gb card rated at 60 mbps. Will there be any noticeable showdown when I use it as internal memory? Thanks in advance.
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It depends on UHS class you have, I just bought a 200gb 90mbps SanDisk Ultra UHS1 (class 10) sd-card yet marshmallow on shield considers it too slow and I did notice lags, choppiness. Apps would force close. In contrast my SanDisk Extreme 64 GB with UHS 3 performs like a champ, where I cannot even notice the performance dip.
Related
Hi All,
Just got myself a 16GB version of one of these:
http://www.transcend-uk.com/Products/ModDetail.asp?ModNo=195&SpNo=1&LangNo=0
to replace the stock 8GB Class 2 card that came with the phone. Unpackaged carefully to avoid dribbling on it
Have run benchmarks using both SKTools and Pocket Mechanic and ..... approx 5% SLOWER than standard card!! Have got SDTuneUp loaded, am I missing something glaringly obvious here???
SKTools summary results:
8GB Class 2 Sandisk (supplied with phone):
Buffered Write speed 910 KB/s
Read speed 7119 KB/s
16GB Class 6 Transcend:
Write speed 859 KB/s
Read speed 7021 KB/s
Could the glaringly obvious thing be *don't buy Transcend cards* ??!!! Am I benchmarking with the wrong software (figures vary greatly between the 2 apps but summary is the same - this card is slower)
Any tweaks I'm missing?
Cheers.
Bones.
Is this with the card in the phone or in a card reader?
Most likely it's the limitation of the phone. Try some desktop benchmarks with a good card reader.
You won't gain much speed from higher speeds cards on a phone.
ez2remember said:
Most likely it's the limitation of the phone. Try some desktop benchmarks with a good card reader.
You won't gain much speed from higher speeds cards on a phone.
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Click to collapse
hmm so whats the point of buying a higher class SD card?
Benchmarked in phone. I'll try in my card reader tomorrow. Got to say I'd be very disappointed if it's a hardware limit in the phone, class 2 cards are much cheaper than class 6 and HTC should have made this apparent if this is the case...
Will update when re-benchmarked, anyone got an comparison stats?
one comparison Class 6 to Class 4
At hand a Transcend 16gb Class 6 and Toshiba 2gb Class 4 SD cards measured in Thinkpad card reader:
Crystal Disk Mark mb/s
Transcend/Toshiba
Seq: 14.78/12.11 read 8.755/5.315 write
512K: 14.76/12.09 read 1.982/2.010 write
4k: 3.114/3.216 read 0.025/0.025 write
Not much there to recommend Class 6
Are you sure you have 8GB class 2 sandisk card? I got class 6 with the ppc.
My results in SKTools:
write: 642 KB/sec
read: 2963 KB/sec
That's 16GB class 2 sandisk card formatted with 32KB clusters. So i think your card is ok
Double post
Class6 does not mean that its faster its just "assure" you it can transfer up to 6mb/s. Thats prolly a device limit and not the card you should try it on a notebook or card reader outside phone. I thought the same when i bought a 16gb sdhc class6 SD for my axim - had no changes in speed at all =\
Hey folks,
is there any Speed difference between a Micro SDHC Card with Class 2,4 or 6 while working with the HD2? For example loading big files like Navigation Software.
Copying things onto the Card is for sure much faster, but while copying i've time to wait. Intressting to me is just the speed difference while working with the phone.
greetz,
stunner
stunner2002 said:
Hey folks,
is there any Speed difference between a Micro SDHC Card with Class 2,4 or 6 while working with the HD2? For example loading big files like Navigation Software.
Copying things onto the Card is for sure much faster, but while copying i've time to wait. Intressting to me is just the speed difference while working with the phone.
greetz,
stunner
Click to expand...
Click to collapse
I've got a class 2 16GB SanDisk card in mine, and if a class 4 or class 6 make operation time any quicker, then I seriously doubt that you'd notice it. I've not tried any other classes, so can't compare, but I can definitely say that a speed improvement is not required.
allright
a 16gig class 2 is ordered!
Depends on the storage size. With most 16GB cards, there's almost no difference between class 2,4,6.
The less the storage size, the greater the difference between the classes.
However, I recommend a quick test to make sure the data rates are acceptable, before you keep the card.
@johncmolyneux
what's your average speed with 16gig class2 (card in the HD2 and connected via USB)?
Would be great if you could make some Benchmarks with HDTune or HD2testw!
A friend of mine got an PNY Premium 16gig Class2 Card and he got:
~3MB/s Write
~8MB/s Read
(hd2testw)
i hope its the card that is limiting and not the HD2, because these values are bullsh*t!
stunner2002 said:
@johncmolyneux
what's your average speed with 16gig class2 (card in the HD2 and connected via USB)?
Would be great if you could make some Benchmarks with HDTune or HD2testw!
A friend of mine got an PNY Premium 16gig Class2 Card and he got:
~3MB/s Write
~8MB/s Read
(hd2testw)
i hope its the card that is limiting and not the HD2, because these values are bullsh*t!
Click to expand...
Click to collapse
Reading, I got 8.3MB/s, but couldn't try a write test as it wanted to remove the partition on the card. I then tried the same test with the 8GB Transcend card (class 6) that was in my HD, and I got around 50MB/s read on that.
It was definitely a noticable difference doing that test, but not a noticable difference when using the device.
Incidentally, I couldn't find a single thing about hd2testw. Do you have any links?
what? 50MB/s Read. thats stunning!
is the 16gig Card a SanDisk or also one of the "cheaper" producers?
Try ATTO Benchmark.
I'm now going to cancel the ordered card and get the SanDisk 16gig from amazon. Reviewers on amazon talking about 10MB/s write and up to 20MB/s read. Hopefully the HD2 can make same results!
These are both using ATTO Benchmark (8MB chunks, 256MB size).
16GB card is a SanDisk, class 2.
Write : 4 MB/s
Read : 8.6 MB/s
8GB is a Transcend, class 6.
Write : 6 MB/s
Read : 7.4 MB/s
I trust neither of the apps that I've used for these tests, as the results don't make any sense.
johncmolyneux said:
I then tried the same test with the 8GB Transcend card (class 6) that was in my HD, and I got around 50MB/s read on that.
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Click to collapse
No offence, but I would be inclined to suspect your benchmarking software if it's claiming 50MB/s. That sort of speed suggests that all the reading and writing is actually being done to or from an in-RAM cache rather than the card itself.
Shasarak said:
No offence, but I would be inclined to suspect your benchmarking software if it's claiming 50MB/s.
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Click to collapse
I totally agree with you, and did so before you said that
johncmolyneux said:
I trust neither of the apps that I've used for these tests, as the results don't make any sense.
Click to expand...
Click to collapse
johncmolyneux said:
These are both using ATTO Benchmark (8MB chunks, 256MB size).
16GB card is a SanDisk, class 2.
Write : 4 MB/s
Read : 8.6 MB/s
Click to expand...
Click to collapse
32KB cluster size ?
What is the best cluster size to use for formatting a 16 gig card?
Hi,
I have class 4 SD card m running Pda's win7.8 rom. the problem I m facing is its lagging and slow then I did a benchmark test using free benchmark app everything is perfect except the write speed which is just 2.1 something, I know it may be a problem of SD card though wanted to know is there any tweak to speed it up through registry or app like andoirds have?
thankyou
no... buy better card...
dxdy said:
no... buy better card...
Click to expand...
Click to collapse
can you guide me which type of card should i buy?
thankyou..
someone write this list but also many others cards is fine
Kingston 4GB Class 4
Kingston 8GB Class 4
Kingston 32GB Class 4
Microcenter 16GB Class 2
SanDisk 8 GB Class 2
SanDisk 16 GB Class 2
SanDisk 16 GB Class 6
SanDisk 32 GB Class 2
i have SanDisk 32 GB Class 2 and speed is around 8 mb/s
Slower card makes
you wait longer,
gets your cpu hotter,
your battery drain faster,
lags the phone,
slow responses of your phone,
Go buy yourself a class10 SD card!
Believe me, if i knew the diffrence, i would buy it 3 years ago...
Thank-you dxdy and stealth21
will buy new SD and report back
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.
Very slow sd speed formated as internal, what are you guys getting in a1 sd bench?
https://play.google.com/store/apps/details?id=com.a1dev.sdbench
optionalmgrr.la said:
Very slow sd speed formated as internal, what are you guys getting in a1 sd bench?
https://play.google.com/store/apps/details?id=com.a1dev.sdbench
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Click to collapse
"slow" means what speeds exactly for you?
strongst said:
"slow" means what speeds exactly for you?
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Click to collapse
Like less than 5mb/s
optionalmgrr.la said:
Like less than 5mb/s
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Click to collapse
What SD card do you have installed, and is it a Class 10, or a UHS-1 or UHS-3? The type of SD card and what it's rated for will heavily impact your expected speeds, especially if you adopt the SD card.
Though my SD card is not formatted as internal storage (and thus not subject to encryption, which may slow down the read/write speeds), I'm getting similar speeds to what my SD card is rated at.
SD card: Sandisk Extreme 32 GB (UHS-3, v30 rated, up to 90 MB/s read, up to 60 MB/s write)
Formatted as: portable storage.
System: stock 7.0 June 2017 security patch, NPJS25.93-14-8.
A1 SD: 81.9 MB/s read, 51 MB/s write
echo92 said:
What SD card do you have installed, and is it a Class 10, or a UHS-1 or UHS-3? The type of SD card and what it's rated for will heavily impact your expected speeds, especially if you adopt the SD card.
Though my SD card is not formatted as internal storage (and thus not subject to encryption, which may slow down the read/write speeds), I'm getting similar speeds to what my SD card is rated at.
SD card: Sandisk Extreme 32 GB (UHS-3, v30 rated, up to 90 MB/s read, up to 60 MB/s write)
Formatted as: portable storage.
System: stock 7.0 June 2017 security patch, NPJS25.93-14-8.
A1 SD: 81.9 MB/s read, 51 MB/s write
Click to expand...
Click to collapse
Uhs1 I wonder because encryption it bogs down the carx
optionalmgrr.la said:
Uhs1 I wonder because encryption it bogs down the carx
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Click to collapse
It's definitely possible as UHS-1 cards are rated for a minimum write speed of 10 MB/s. Encryption and being adopted as internal storage may decrease that write speed even further.
You could try formatting the SD card as portable storage, see if speeds improve (plus apps will behave better if they're kept on internal storage, widget work and they launch faster).
If you're still intent on adopting cards for internal storage, I would want to consider UHS-3 as a minimum rating on SD cards (minimum write speed of 30 MB/s). They're more expensive, yes - but the faster the speed, the fewer issues you may run into.