Hi Mate
I have the same problem with the same flush drive, new just purchased. If you still have it - check it with CrystalDiskInfo, mine have shown 0% health left, I also checked with HD Santinel PRO with the same result and after this I run speed tests, which were bad as yours (a bit better, but still):
Sequential Read : 44.557 MB/s
Sequential Write : 44.881 MB/s
Random Read 512KB : 42.186 MB/s
Random Write 512KB : 39.549 MB/s
Random Read 4KB (QD=1) : 7.378 MB/s [1801.3 IOPS]
Random Write 4KB (QD=1) : 9.854 MB/s [2405.8 IOPS]
Random Read 4KB (QD=32) : 8.271 MB/s [2019.4 IOPS]
Random Write 4KB (QD=32) : 9.922 MB/s [2422.4 IOPS]
Test : 100 MB [N: 0.0% (0.0/119.2 GB)] (x1)
equential Read : 44.533 MB/s
Sequential Write : 44.915 MB/s
Random Read 512KB : 42.315 MB/s
Random Write 512KB : 36.576 MB/s
Random Read 4KB (QD=1) : 6.705 MB/s [1637.0 IOPS]
Random Write 4KB (QD=1) : 6.864 MB/s [1675.8 IOPS]
Random Read 4KB (QD=32) : 6.941 MB/s [1694.6 IOPS]
Random Write 4KB (QD=32) : 6.989 MB/s [1706.2 IOPS]
Test : 1000 MB [N: 0.0% (0.0/119.2 GB)] (x1)
And now I just run test on my older, already repaired for bad sectors, Patriot 64GB Stellar OTG drive:
Sequential Read : 115.646 MB/s
Sequential Write : 55.620 MB/s
Random Read 512KB : 119.137 MB/s
Random Write 512KB : 24.142 MB/s
Random Read 4KB (QD=1) : 4.557 MB/s [ 1112.6 IOPS]
Random Write 4KB (QD=1) : 1.185 MB/s [ 289.2 IOPS]
Random Read 4KB (QD=32) : 5.420 MB/s [ 1323.3 IOPS]
Random Write 4KB (QD=32) : 1.941 MB/s [ 474.0 IOPS]
Test : 100 MB [N: 0.2% (0.1/57.7 GB)] (x1)
And external 8Tb WD USB 3.0 Hard Drive
Sequential Read : 167.104 MB/s
Sequential Write : 164.122 MB/s
Random Read 512KB : 39.738 MB/s
Random Write 512KB : 76.386 MB/s
Random Read 4KB (QD=1) : 0.369 MB/s [90.2 IOPS]
Random Write 4KB (QD=1) : 1.302 MB/s [317.8 IOPS]
Random Read 4KB (QD=32) : 0.621 MB/s [151.6 IOPS]
Random Write 4KB (QD=32) : 1.389 MB/s [339.2 IOPS]
Test : 1000 MB [O: 31.7% (2362.1/7452.0 GB)] (x1)
All tests are run with the same parameters, some with sample of 1000 MB and some with 100 MB.
SanDisk should beat all those items with ease, but it is not. However mine was mechanically falling. I reordered another one, will post here new tests when I get it.
So, nothing is wrong with my PC, it is something not right with SanDisk.
Lets hope someone will respond
