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Sandisk 32GB MicroSDHC Class 4 Memory Card & MicroSDHC Card Reader (Bulk)
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- 32GB MicroSDHC Memory Card
- Class 4 - 4mb/s Read/Write Speed
- Transflash Memory
- USB Memory Card Reader
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Top Customer Reviews
What I can attest to is the actual performance.
When I recieved the card I immediately ran a benchmark test.
Write speed: 5.28 MB/s
Read speed: 16.2 MB/s
useable memory space 29.7 GB (average for this size card from what I have read.)
This memory card so far has exceeded my expectations.
The USB adapter is just an added bonus and since my computer has a card reader I probably will never use it.
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 'Customer Images' section for details)
- For smaller files (1-5MB), the Sandisk class-4 card gives an amazing write speed of 15-17MB/s, while the PNY 'class-10' card can only get 1-6MB/s
- For larger files (10-15MB), the Sandisk and PNY cards are about equal at around 8MB/s for write
- For huge files (1GB), the PNY did better at 9.5MB/S, while the Sandisk dropped to 5.5MB/s
- The read speeds of both cards are equally high at around 18MB/S (this number may be limited by the maximum speed of my card reader used)
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.Read more ›
Read speed: 5.2 MB/sec
Write speed: 31.2 MB/sec
If you're using this card to store apps, data, photos, video:
-excellent for apps/data (since Class 4 has much faster random read/write speeds than higher-'Class' cards like Class 10)
-very good for photos/video
If you're using this card for photos/video/music only:
-but if you'll only use it to store media, get a Class 10 card (faster sequential throughput)
If you're using this for a camera:
-don't get this, since it's slower sequential write-speed
-get a Class 10 card (which is better for HD video recording)
About the included USB memory card reader:
-You might as well throw it away (or just keep it in a box as a backup) it sucked
-It's not worth the hassle trying to use it as a daily memory card reader (very poor construction)
So to sum it up...
Micro Sd Card 5 stars.
Usb reader 0 stars.
I repeat: DO NOT INSERT THE CARD INTO THE READER.
It doesn't come back out... at least not with any reasonable amount of force. After scraping up my knuckles and (stupid idea) gums, and trying every tool I could imagine to peacefully extract the card, it was still firmly stuck inside the reader, and now slightly scuffed up. How did I finally remove it? By using a Dremel tool with a cutting wheel to slice through the cheap metal covering on the back of the reader, then peeling it off so that I could extricate the card from the front side.
Much to my joy, the card was completely undamaged and still works fine! The reader is in six ragged pieces at the bottom of my trash bin.
My recommendation: Save yourself a dollar and a lot of frustration by buying the card-only version. If you must buy this version, trash the reader without even attempting to use it.
Most Recent Customer Reviews
I got mine cheap on sale a few years ago at a local store. After years of heavy use it still works - - can't say the same about some other memory cards. Read morePublished 4 months ago by J. Pawlowski
Greatp product it allow me to have more memory on my phones and tablets.Published 4 months ago by Terence