Comments on: Samsung Pro microSDXC UHS-1 U1 Card Review (64GB)

By: tony baze

tony baze — Wed, 07 Oct 2015 16:14:00 +0000

Important correction:
Actually, your results are incorrect in the region of blocks 32k OR less. I observed this behavior on my external(!) reader too. 64k and more gives >60MB/s, but 32k or less gives <9MB/s(read) and < 25 MB/s. (overlapped IO does not it affect much).
In internal reader:
neither (overlapped 1)
16k : 48/56, 32k: 57/63;
overlapped 10:
16k: 55/63. 32k:64/71
There is obvious continous speed developement if the card is in internal reader. There is a gap if the (my and your) reader is used between 32k and 64k

By: Shahnewaz Ahmed

Shahnewaz Ahmed — Thu, 16 Apr 2015 20:13:00 +0000

Bought this. HOLY…..this thing is wicked fast!

By: Andre

Andre — Tue, 03 Feb 2015 15:41:00 +0000

Sean, You should use Kingston MobileLite G4 – significantly better speeds.

By: Kyle

Kyle — Wed, 12 Nov 2014 23:23:00 +0000

Is there anyway that you can do a benchmark with A1 SD? This would really help for people who want to use them in phones. Random read and write are what’s important!

By: zzz

zzz — Thu, 06 Nov 2014 21:35:00 +0000

Is it good enough to record 4k videos on Galaxy s5?