anyone else's orders not showing up in history? no confirm email either
Same here. I bought a NE gift card about 50 minutes ago and have received no e-mails from them except for one that says I changed my payment method. No order showing up in my history and no pending charge or preauthorization on my credit card
Samsung Plus version has 10 kilobytes/sec random 4k write so this would be a poor choice for running apps.
from Anandtech forums
When you use a microSD/SDHC/SDXC card in an android device, there are 2 factors that you have to consider:
- sequential write
- random 4k write
Sequential write is obvious (Class 4 = minimum 4MB/s sequential write, Class 6/10 = etc..). Copy large files to the card is where you'll see your limitation
However, there is random 4k write. If you plan on running anything off the SD (app storage, app cache, etc..) then this is very, very important.
For MicroSD cards:
- most Class 4, 1/2 of the Class 6 cards, and very few Class 10 cards will do random 4k write at around ~1.5MB/s. it sounds slow, but its good enough for most applications
- most Class 10 cards will have a random 4k write of about ~0.01MB/s (that is not a typo). That means that most Class 4 micro cards are theoretically 150x faster than most Class 10 micro cards."
I've been passing on Class 4 deals to wait for Class 10 cards... perhaps I've been going about this all backwards and should be rethinking my position. Thanks for the info Xanon!
Unfortunately class and ratings really mean nothing, and obviously only sequential reads/write are even considered in classing them (and in optimal conditions). For some reason benchmarks on memory cards vary wildly depending on the device used. A card might write at 45MB/s in one reader, 20MB/s in another, and 4MB/s in your device. Even if Anandtech had benchmarked this card at a certain spec in their test, it would not be unusual for you to get 10% or 300% what they got in your personal use of the same card.
The thing about random reads I had not heard (class 4 > class 10), but I highly doubt it's consistent like that, unless there's some underlying technical limitation with the way class 10 cards are configured. It probably just happened that way in their tests, but I could be wrong.
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