Home > Consumer Reviews > A-DATA MicroSDHC 16 GB Class 6 Turbo With SD Adapter 16GUSDHC6 (Black)

I bought the A-Data 16GB Class 6 MicroSDHC card as an upgrade for my Sandisk 8GB Class 4 MicroSDHC card. I wanted to stick with Sandisk but noticed that most Sandisk 16GB MicroSDHC cards available at the time of this writing have a Class 2 rating. I went with A-Data since theirs have a Class 6 speed rating.

I tested transfer speeds using a Sandisk MobileMate MicroSDHC USB reader plugged into a Windows 7 PC transferring a single 992MB file. Results are shown below:

Sandisk Class 4 8GB MicroSDHC card:
Write: ~75 seconds (13.2MB/sec)
Read: ~50 seconds (19.8MB/sec)

A-Data Class 6 16GB MicroSDHC card:
Write: ~126 seconds (7.8MB/sec)
Read: ~64 seconds (15.5MB/sec)

The Sandisk Class 4 8GB MicroSDHC card is significantly faster and clearly surpasses it's minimum speed requirement for a Class 4 rating. I'm curious to see how fast the Sandisk 16GB Class 2 and Class 4 MicroSDHC cards perform and if the slower data transfer speed observed on the A-Data 16GB MicroSDHC card is common across all manufacturers with their 16GB MicroSDHC cards.

So far so good. I am using this for the T-Mobile G-1. I have put video podcast from Itunes, an assortment of movies in it's entirety, about 8gb of music, pictures, you name it. It might be a 2-3 second lag wile starting up what you want to watch as far as video, but after that I had no problems. Grant it I am not that computer savvy, but this is a good card, at least for right now until other cards of your likeing come down off of their prices. So G-1 users I don't speak for all of the G-1 users, but this card works very well with the G-1. In October I heard that the new G-1 is coming out so this card will be a welcomed addition or until a 32gb comes out. Give it a try.

Although the review posted by the person who timed transfer speed of this card against the Class 4 Sandisk card looks damning, it is important to remember that single-file transfer speed is not always the most important criterion when considering a card like this one. Potentially more important, particularly on a larger card like this, is random seek and latency figures. On larger cards, it can take significantly longer to locate the file that's being looked for, since there simply is more to be searched. A higher-rated card should have a random seek time small enough to not interfere with the card's ability to achieve the rated speed. Without seek and latency data, such comparisons are almost useless.

I am using this card on my rooted T-Mobile MyTouch, and am very happy with the performance. Since one of the things I'm using it for is to offload apps from internal memory onto the sd card and run them from there, there are a lot of small reads taking place all the time, making seek time critical in my case. I don't have any figures on seek or latency time, but I can say the performance has been very satisfactory.

I purchased this item on 06/30/09 for my (Sprint) HTC Touch Pro. It is a very fast card, that has been easy & simple to use, and worry-free. Therefore, and for the money, I think it is one of the greatest things since the making of sliced bread.

Overall, I am very pleased with this card. I purchased for use in my Samsung Eternity (AT&T) cell phone, so I could load it up with music (MP3). Once I got the card inserted into the phone, and ran the software that was included into the phone, it was as simple as dragging and dropping the files into the card (as it showed up as a "removable drive" on my computer).

This card is a great deal, and even though it is sold by a lesser known company (than SanDisk or Kingston), I think it works fine. In fact, if you are at all worried, please note that this card has a lifetime warranty!

If you've never seen one of these SDHC cards in person, you are in a for a surprise. They are TINY! Amazing to think that this puppy holds 16 GB, but it does.