We needed two 32GB microSD cards to add more storage to our S4 phones. We bought one of these and one of the main competing models, the 32GB EVO, which was a few bucks more expensive than this SP model. I've read reviews from both buyers and experts, but still couldn't decide which to go with, so I just bought one of each to test them out for myself. I first captured some 1080p videos saved directly to an SP microSD card and then checked them out to see how well they captured. All videos played well and smoothly. I then tested the speed with the current version (at the time of review) of CrystalDiskMark, first at a file size of 100MB and then at a file size of 1GB. The speeds of this SP Elite card were surprisingly similar in both tests. Added result photo. Results shown are an average of 5 passes in each test, tested on a computer with an integrated card reader running Windows 10 64-bit.* MB/s = 1,000,000 bytes/s [SATA/600 = 600,000,000 bytes/s s]* KB = 1000 bytes, KiB = 1024 bytes 100 MB test Sequential read (Q=32, T=1): 75.586 MB/s Sequential write (Q=32, T=1): 20.894 MB/s Random read 4 KB ( Q = 32 ,T= 1): 4.996 MB/s [1219.7 IOPS] Random Write 4 KB (Q= 32,T= 1): 1.102 MB/s [269.0 IOPS] Sequential Read (T= 1): 86.616 MB/s Sequential Write (T=1): 22.020 MB/s 4 KB Random Read (Q=1, T=1): 4.769 MB/s [1164.3 IOPS] 4 KB Random Write (Q= 1, T=1): 1.099 MB/s [268.3 IOPS] Test: 100 MB [E: 0.0% (0.0/29.9 GiB)] (x5) [interval = 5 seconds] Date: 08/11/2015 17:52:11 OS: Windows 10 [10.0 Build 10240 ] (x64) Test sequential read 1 GB (Q=32, T=1) : 75.506 MB/s sequential write (Q=32, T=1 ) : 20.894 MB/s Random Read 4 KB (Q=32, T=1): 5.037 MB/s [1229.7 IOPS] 4 KB Random Write (Q= 32, T= 1) : 1,090 MB/s [266.1 IOPS] Sequential Read (T= 1) : 86.197 MB/s Sequential Write (T= 1): 21.810 MB/s 4 KB Random Read (Q= 1, T= 1): 4.767 MB/s [1163.8 IOPS] Random Write 4 KB (Q= 1, T= 1 ): 1.080 MB/s [263.7 IOPS] Benchmark: 1024 MB [E: 0.0% (0.0/29.9 GiB)] (x5) [interval = 5 c] Date: 2015-08-11 17:52:37 OS: Windows 10 [10.0 build 10240] (x64) I am very happy with this card and will definitely buy it again.