Lexar 32GB Class 10 microSDHC Memory Card Review
Lexar 32GB Class 10 card is fast, and is capable of a minimum sustained write speed of 10 MB/s and read speed of 20 MB/s when the memory card is directly connected to a PC, such as by using the included thumb drive adapter. In our testing we saw a 10 MB/s write and 24 MB/s read speed when copying a 1GB file to the Lexar card while installed in the thumb drive adapter, and up to 11 MB/s write 20 MB/s read speeds when using the ATTO Disk Benchmark program. But for whatever reason, all of the speed and benchmark tests were not as fast once the Lexar card was installed in the Motorola DROID X, as the AnTuTu System Benchmark Android app only showed a max write speed of 9.0 MB/s and a dismal read speed of 11.1 MB/s, while the ATTO PC program showed a write speed of 11.3 MB/s and a read speed of 12.4 MB/s
It is clear that there is some speed loss once the memory card is placed in the DROID X, though it is unclear if it is caused by the phone’s hardware or the Android 2.2 operating system. Furthermore, other phones may not have this issue, so it’s best to test the phone you are using. But regardless, the Lexar 32GB Class 10 card still preformed better than the Japan 16GB Class 4 card that came included with the Motorola DROID X.
Based on our results, we are overall quite pleased with the Lexar 32GB Class 10 microSDHC memory card, as it provides a lot of storage room for all your files, and proved to be faster than our current generic 16GB Class 4 card. The $149 price from the manufacturer seems high, but you can find it elsewhere for about $100, which is more competitively priced to other 32GB microSDHC memory cards on the market. Just keep in mind that if you're going to transfer a large amount of files, you might want to remove the memory card from the phone first and use the thumb drive to get the best speeds, as there may be some bottlenecking when connecting the phone directly to a PC with a USB cable.
1. SemperFiV12 (Posts: 684; Member since: 09 Nov 2010)
Difference in speed does not seem significant enough, to me, to justify its price. Just my opinion though.
2. giantgnome (Posts: 67; Member since: 11 Feb 2011)
It may seem that way to you was because the no-name brand card was actually much better than its minimum Class 4 rating. If I could get a class 4 32gb microsd for much cheaper but it ran like a class 8 I would jump on that for sure. But if I ended up with a 32gb class 4 that actually ran at class 4 speeds then the lexar one is a much better deal.
3. Gary (unregistered)
Transcend 32 GB Class 10 is $49.96 with free shipping at Amazon.
4. Richard (unregistered)
@Gary The Transcend at Amazon is a SDHC card and not a MicroSDHC
5. Tomj777 (unregistered)
I have an HD2 and I'm constrained by hardware specification (the phone hardware doesn't lend itself to exploiting a speed greater than Class 4).
That said, performance is noticeably better with my Class 6 8GB Sandisk than a more `generic` branded class 4.2GB card
But here's the rub: Anecdotal evidence on various forums indicate that class 10 cards are optimised for sequential writes - most operations in the Smartphone world relates to Random Access, not Sequential...
Both hardware and card access may have impacted your tests. I notice that my friends Desire HD seems to be able to exploit the Class 10 (according to SD Tools and general responsiveness compared to a class 4
The challenge I have right now is that I've a Class 2 32GB card (sent incorrectly by play.com rather than the advertised class 4) and a Class 10 32GB Lexar card...
Do I send them both back or just send the Class 2 and see how the class 10 performs....