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Slower than SanDisk Extreme III
on March 6, 2011
I bought two of these SanDisk Extreme Pro SD cards based on past use of SanDisk SD cards and the new claimed speed of 45MB/s; which should make them 1/3rd faster than SanDisk Extreme III SD cards at 30MB/s.
However, I have found both cards are actually slower on both write/read speeds than SanDisk Extreme III. And the Extreme Pro average w/r (15.7 MB/s) is barely faster than Ultra II average w/r (14.1 MB/s)
Using AJA System Test:
Extreme Pro ~ write= 13.5 MB/s & read= 17.8 MB/s (card #1)
Extreme Pro ~ write= 13.9 MB/s & read= 17.7 MB/s (card #2)
Extreme III ~ write= 15.4 MB/s & read= 19.0 MB/s
Ultra II ~ write= 9.7 MB/s & read= 18.5 MB/s
I am wondering if these SanDisk cards are actually SanDisk cards or knockoffs?