I posted this in another thread, but it applies here as well:
I was going to wait for a class 6 16GB Micro SD, but I got such a great deal on a
Sandisk 16GB Micro SD (Class 2) that I could not pass it up. I got it from Office Depot for $23.76 out the door.
They have it on their website for about $32, but it's delivery only. They carry the same model in store, but its a different SKU and priced at $99. I asked them to price match their website which they did with no problem, which surprised me since the SKU was different. I will mention that they are the exact same model though (SDSQ-016G-A11M) regardless of the SKU.
Anyways, I used
THIS office depot to get $10 off my purchase. It may not be super fast, but it should be very reliable being that it's a Sandisk and it was dirt cheap.
Tested it with Crystal Disk Mark on my PC with a card reader and got about 18mb read and 9mb write on the sequential and 512k runs which isn't too bad for a $23 16GB MicroSD
The 4k weren't as great, but still I can work with this card. Below are the benchmark details.
EDIT: I added benchmarks for my 8gb Kingston Class 4 that I use in my TP2. The benchmarks on the 16gb Class 2 actually look better. That is odd.
EDIT 2: I added some more test results to ensure my results are accurate.
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CrystalDiskMark 3.0 x64 (C) 2007-2010 hiyohiyo
Crystal Dew World :
Crystal Dew World
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* MB/s = 1,000,000 byte/s [SATA/300 = 300,000,000 byte/s]
OS : Windows 7 [6.1 Build 7600] (x64)
Here is my Sandisk 16GB Class 2 Micro SDHC
Test 1: 50 MB [L: 6.7% (1.0/14.8 GB)] (x1)
Sequential Read : 17.957 MB/s
Sequential Write : 8.971 MB/s
Random Read 512KB : 17.961 MB/s
Random Write 512KB : 2.092 MB/s
Random Read 4KB (QD=1) : 4.004 MB/s [ 977.5 IOPS]
Random Write 4KB (QD=1) : 0.022 MB/s [ 5.3 IOPS]
Random Read 4KB (QD=32) : 4.061 MB/s [ 991.4 IOPS]
Random Write 4KB (QD=32) : 0.033 MB/s [ 8.1 IOPS]
-------------
Test 2: 100 MB [L: 6.6% (1.0/14.8 GB)] (x5)
Sequential Read : 17.914 MB/s
Sequential Write : 9.358 MB/s
Random Read 512KB : 17.922 MB/s
Random Write 512KB : 2.131 MB/s
Random Read 4KB (QD=1) : 4.020 MB/s [ 981.4 IOPS]
Random Write 4KB (QD=1) : 0.020 MB/s [ 4.9 IOPS]
Random Read 4KB (QD=32) : 4.096 MB/s [ 1000.0 IOPS]
Random Write 4KB (QD=32) : 0.027 MB/s [ 6.6 IOPS]
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Test 3: 500 MB [L: 6.6% (1.0/14.8 GB)] (x2)
Sequential Read : 17.921 MB/s
Sequential Write : 9.434 MB/s
Random Read 512KB : 17.816 MB/s
Random Write 512KB : 1.950 MB/s
Random Read 4KB (QD=1) : 3.555 MB/s [ 867.9 IOPS]
Random Write 4KB (QD=1) : 0.019 MB/s [ 4.7 IOPS]
Random Read 4KB (QD=32) : 3.868 MB/s [ 944.3 IOPS]
Random Write 4KB (QD=32) : 0.020 MB/s [ 4.9 IOPS]
---------------------------
Here is my Kingston 8GB Class 4 MicroSDHC (currently used in my TP2)
Test 1: 50 MB [L: 46.5% (3532.5/7592.0 MB)] (x1)
Sequential Read : 18.550 MB/s
Sequential Write : 8.953 MB/s
Random Read 512KB : 18.553 MB/s
Random Write 512KB : 1.620 MB/s
Random Read 4KB (QD=1) : 4.011 MB/s [ 979.2 IOPS]
Random Write 4KB (QD=1) : 0.017 MB/s [ 4.2 IOPS]
Random Read 4KB (QD=32) : 3.901 MB/s [ 952.4 IOPS]
Random Write 4KB (QD=32) : 0.030 MB/s [ 7.3 IOPS]
----------------
Test 2: 100 MB [L: 46.5% (3532.5/7592.0 MB)] (x5)
Sequential Read : 18.505 MB/s
Sequential Write : 9.547 MB/s
Random Read 512KB : 18.479 MB/s
Random Write 512KB : 1.978 MB/s
Random Read 4KB (QD=1) : 3.860 MB/s [ 942.4 IOPS]
Random Write 4KB (QD=1) : 0.017 MB/s [ 4.2 IOPS]
Random Read 4KB (QD=32) : 3.865 MB/s [ 943.6 IOPS]
Random Write 4KB (QD=32) : 0.024 MB/s [ 5.8 IOPS]
--------------
Test 3 : 500 MB [L: 46.5% (3532.5/7592.0 MB)] (x2)
Sequential Read : 18.512 MB/s
Sequential Write : 10.413 MB/s
Random Read 512KB : 18.181 MB/s
Random Write 512KB : 1.724 MB/s
Random Read 4KB (QD=1) : 3.942 MB/s [ 962.3 IOPS]
Random Write 4KB (QD=1) : 0.017 MB/s [ 4.2 IOPS]
Random Read 4KB (QD=32) : 3.891 MB/s [ 949.9 IOPS]
Random Write 4KB (QD=32) : 0.018 MB/s [ 4.4 IOPS]
-------------------
Here is a Kingston 8GB Class 4 regular size SDHC (not micro)
Test 1 : 50 MB [L: 0.0% (0.1/7592.0 MB)] (x1)
Sequential Read : 16.853 MB/s
Sequential Write : 9.397 MB/s
Random Read 512KB : 16.826 MB/s
Random Write 512KB : 1.681 MB/s
Random Read 4KB (QD=1) : 4.074 MB/s [ 994.6 IOPS]
Random Write 4KB (QD=1) : 0.039 MB/s [ 9.6 IOPS]
Random Read 4KB (QD=32) : 4.089 MB/s [ 998.3 IOPS]
Random Write 4KB (QD=32) : 0.063 MB/s [ 15.3 IOPS]