Friday, August 24, 2012

Windows XP Home Edition SP3 ATTO Tests (1 MB to 8 MB, total length 256 MB, queue depth 4: 1 MB Write




SanDisk microSD and microSDHC 1 GB*, 2 GB, 4 GB, 8 GB, 16 GB and 32 GB mobile memory cards are the best and most general way to carry your music, cosmetic travel bags videos, photos, cosmetic travel bags games, files and apps on your mobile phone. SanDisk cosmetic travel bags mobile memory cards plug directly into most mobile phones cosmetic travel bags with a microSD/microSDHC card slot for the best in comfortableness and reliability.
As smartphones with card slots become growingly popular, it s indispensable to have a SanDisk micro Secure Digital (microSDHC) Memory Card to aid you get the most out of your phone. Your phone with a card slot goes everyplace you do, so you must put it to good use. With a SanDisk microSDHC Memory Card, you instantaneously add more memory storage so you may fit more on your phone with a card slot music, videos, ringtones, games, apps, and more. And to support you coordinate all your media files so you may without apparent cosmetic travel bags effort transfer them back and forth amid your phone and PC, SanDisk offers a free Media Manager software download.
* 1 gigabyte (GB) = 1 billion bytes. Some capacity not available for info storage. cosmetic travel bags ** Approximations: results cosmetic travel bags will vary based on file size, resolution, compression, bit rate, content, host device, pre-loaded files and other factors. See www.sandisk.com
cosmetic travel bags 511 of 536 people found the following review helpful. This Sandisk class-4 micro-SDHC card is faster than a PNY class-10 By NLee the Engineer I purchased a SanDisk 32 GB microSDHC Flash Memory Card SDSDQM-032G nearly two months ago, for use in my VIZIO 8-Inch cosmetic travel bags Tablet VTAB1008. At the same time, I also purchased a higher-priced PNY 32 GB microSDHC Card (P-SDU32G10-EFS2) which is supposed to be a class-10 . My benchmark results, however, show that the Sandisk class-4 card is actually faster most of the time.
I used two sets of benchmark programs. One is called Flash Memory Toolkit v2.0 , which measures the random read/write speed of files between 1MB and 15MB. The other one is called H2testw v1.4 , which measures the sequential read/write speed using 1GB files. Here are my results: (see my uploaded charts in Images section for details)
What the above shows is that: When used in a typical digital camera (with file size 3-5MB), this Sandisk class-4 card is at least twice as fast as the PNY so-called class-10 card. But when used in a HD video camera (sequential writing of huge file), then the PNY card should perform better.
For a card to be marketed as a class-10 , it must maintain a MINIMUM write speed of 10MB/s. So by this definition, the PNY card does not qualify since it cannot even achieve a MAXIMUM write speed of 10MB/s. This Sandisk card, on the other hand, exceeds the requirement of class-4 by a huge margin.
Sandisk seems to be the only flash memeory manufacturer that still gives honest, conservative speed class ratings. Any other manufacturers would have labeled this card a class-6 or even higher. As a matter of principle, I rather give my money to a company that promises less but delivers more, instead of to others that do the opposite. At the present cost of about 1 buck per GB, this is an unbeatable deal!
[Aside] The capacity cosmetic travel bags of this card, as reported by my computer, is only 29.7GB. Note that this is actually normal, because compter people define one Giga as 2 to the power 30 , which is 7.4% greater than 1 billion. So 29.7GB comes to just about 32 billion bytes, which is 32GB according to marketing people.
94 of 104 people found the following review helpful. No Problems, Works as Advertised, and Came With a MicroSD Card Adapter! By narfybob So I read some of the reviews about this microSD card and I wanted to chip in my experiences.
I purchased mine from Amazon.com via the vendor MemoryMogul. It arrived at my porch in a small envelope package and did not have any of the bulk packaging that one would find from a retail store. Inside this envelope was just a small plastic case holding the microSDHC card as well as a SanDisk microSD card adapter. This was surprising to me since it wasn t advertised that this microSD card would come with an adapter. I guess that s good in my case since I was going to purchase a separate adapter. The package did not come with an instruction manual, or any SanDisk packaging for that matter. [Please see the customer image I uploaded]
Apart from the unexpected package and its contents, everything about the microSD card works as advertised: 1. My Macbook and Dell laptops both recognized that 31.90 GB of space are available to use in my card. Some people have reported that they received cards with less available space. 2. Also relating to people s complaints, some have said that they cannot write more than 10 GB of data onto their cards. I am happy to report that I can in fact write more than 10 GB of data to my card (right now I have about 17 GB of music and JPEG files loaded onto my card). 3. Still relating to peoples reported issues, my card has a read/write speed of 4.0 MB/s or higher, as it should since it s a class 4 microSD card. Some have reported that the read/write speed is less than that. To put it to the test, I did many benchmark tests and compared it to other SD cards I have. If you are interested, I included them at the bottom of this review.
All in all, I am satisfied with my purchase. For $28 USD, this 32 GB class 4 microSDHC card is worth every penny. I will be using this product with my SanDisk SDMX22-004G-A57P Sansa Clip Zip 4 GB, Purple portable media player as an expandable memory option. Everything about the microSDHC card itself works as advertised according to the benchmark tests as well as practical file transfers. The included microSD cosmetic travel bags card adapter was also a nice surprise to me and I no longer need to purchase a separate adapter.
To be honest, I don t completely understand the results of the software benchmark tests, so if you can interpret them, more power to you. Because of this, I decided to do a bunch of real-world file transfers (copying) to test the write speeds of the [micro]SD cards. I chose various batch sizes for my tests to see if the size affected cosmetic travel bags the cards write speeds.
That being said, all tests were done using the same SD card reader, microSD card adapter, cosmetic travel bags music files, source for files, and up-to-date software: Targus USB 2.0 SD card reader SanDisk MicroSD card adapter Macbook 5.1 running Mac OS X 10.6.8 (for file copy, AJA, and Xbench tests) Files were copied/transferred from an Other World Computing On-The-Go Pro portable external hard drive via USB 2.0 (500 GB Seagate cosmetic travel bags 7200.4 cosmetic travel bags RPM Momentus hard drive) Dell Vostro 1400 running Windows XP Home Edition SP3 with the latest updates installed (for ATTO, CrystalDiskMark, and Flash Memory Toolkit [free] tests)
SanDisk 32 GB Class 4 MicroSDHC, brand new Mac OS X 10.6.8 Music File Copy Tests: 10 MP3 files, 109.1 MB total, 26s = 4.20 MB/s 15 MP3 files, cosmetic travel bags 167 MB total, 41s = 4.07 MB/s 15 MP3 files, cosmetic travel bags 164 MB total, cosmetic travel bags 40s = 4.10 MB/s 10 Apple Lossless files, 299.5 MB total, 71s = 4.22 MB/s 10 Apple Lossless files, 308.6 MB total, cosmetic travel bags 73s = 4.23 MB/s 12 FLAC files, 375.3 MB total, 87s = 4.31 MB/s 14 FLAC files, 456.1 MB total, 105s = 4.34 MB/s 14 FLAC files, 543.4 MB total, 125s = 4.35 MB/s 47 FLAC + 15 MP3 + 6 JPEG files, 1.46 GB total, 342s = 4.37 MB/s 64 FLAC + 12 MP3 + 6 JPEG files, cosmetic travel bags 2.12 GB total, 498s = 4.26 MB/s 129 FLAC + 10 JPEG files, 3.24 GB total, 757s = 4.38 MB/s
Xbench Disk Tests: Sequential: Uncached Write 4.30 MB/sec [4K blocks] Uncached Write 4.04 MB/sec [256K blocks] Uncached Read 3.63 MB/sec [4K blocks] Uncached Read 19.48 MB/sec [256K blocks] Random: Uncached Write 0.93 MB/sec [4K blocks] Uncached Write 0.56 MB/sec [256K blocks] Uncached Read 2.80 MB/sec [4K blocks] Uncached Read 19.05 MB/sec [256K blocks]
Windows XP Home Edition SP3 ATTO Tests (1 MB to 8 MB, total length 256 MB, queue depth 4: 1 MB Write 4.86 MB/s Read 17.70 MB/s 2 MB Write 4.92 MB/s Read 17.69 MB/s 4 MB Write 4.92 MB/s Read 17.83 MB/s 8 MB Write 4.93 MB/s Read 17.66 MB/s
CrystalDiskMark Tests (50 MB, 9 test average): Sequential: Write 5.392 MB/s Read 19.21 MB/s 512k: Write 1.511 MB/s Read 18.70 MB/s 4k: Write 1.053 MB/s Read 2.578 MB/s 4k QD32: Write 0.846 MB/s Read 2.933 MB/s
Flash Memory Toolkit [free] Tests: File Benchmark 1 MB Write 13.21 MB/s Read 15.80 MB/s 2 MB Write 14.45 MB/s Read 16.30 MB/s 3 MB Write 14.77 MB/s Read 16.46 MB/s 4 MB Write 11.46 MB/s Read 16.56 MB/s 5 MB Write 12.12 MB/s Read 16.58 MB/s 10 MB Write 7.98 MB/s Read 16.46 MB/s 15 MB Write 6.64 MB/s Read 16.49 MB/s ________________________________________________________________________ SanDisk 8 GB Class 2 SDHC, 2 years old Mac OS X 10.6.8 cosmetic travel bags Music File Copy Tests: 10 MP3 files, 109.1 MB total, 23s = 4.74 MB/s 15 MP3 files, 167 MB total, 29s = 5.76 MB/s 15 MP3 files, 164 MB total, 24s = 6.83 MB/s 10 Apple Lossless files, 299.5 MB total, 56s = 5.35 MB/s 10 Apple Lossless files, 308.6 MB total, 58s = 5.32 MB/s 12 FLAC files, 375.3 MB total, 74s = 5.07 MB/s 14 FLAC files, 456.1 MB total, 86s = 5.30 MB/s 14 FLAC files, 543.4 MB total, 117s = 4.64 MB/s 47 FLAC + 15 MP3 + 6 JPEG files, 1.46 GB total, 270s = 5.54 MB/s 64 FLAC + 12 MP3 + 6 JPEG files, 2.12 GB total, 399s = 5.44 MB/s 129 FLAC + 10 JPEG files, 3.24 GB total, 591s = 5.61 MB/s
Xbench Disk Tests: Sequential: Uncached Write 5.31 MB/sec [4K blocks] Uncached Write 5.08 MB/sec [256K blocks] cosmetic travel bags Uncached Read 2.44 MB/sec [4K blocks] cosmetic travel bags Uncached Read 9.84 MB/sec [256K blocks] Random: Uncached Write 0.02 MB/sec cosmetic travel bags [4K blocks] Uncached Write 0.94 MB/sec [256K blocks] Uncached Read 2.34 MB/sec [4K blocks] Uncached Read 9.86 MB/sec [256K blocks]
Windows XP Home Edition SP3 ATTO Tests (1 MB to 8 MB, total length 256 MB, queue depth 4: 1 MB Write 6.24 MB/s Read 9.48 MB/s 2 MB Write 6.28 MB/s Read 9.65 MB/s 4 MB Write 6.28 MB/s Read 9.55 MB/s 8 MB Write 6.28 MB/s Read 9.55 MB/s
CrystalDiskMark Tests (50 MB, 9 test average): Sequential: Write 6.402 MB/s Read 9.772 MB/s 512k: Write 2.004 MB/s Read 9.786 MB/s 4k: Write 0.022 MB/s Read 2.359 MB/s 4k QD32: Write 0.036 MB/s Read 2.455 MB/s
Flash Memory

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