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We measure the system USB 3.0 performance by using the excellent Patriot SuperSonic Magnum 256GB USB 3.0 drive, which we reviewed back in February this year.
Performance of the USB 3.0 ports is actually slightly disappointing. We have tested this drive recently in some of the new Z87 motherboards and it has scored just over 300 MB/s in the sequential read test for instance. We reinstalled the motherboard USB 3.0 drivers and even reinstalled the operating system from fresh. The results were always close to those above.
Due to the nature of this kind of flash, and via the USB 3.0 interface, 4k and 4k QD32 performance is substantially worse than from a native SSD drive across a SATA connector.
The ATTO Disk Benchmark performance measurement tool is compatible with Microsoft Windows. Measure your storage systems performance with various transfer sizes and test lengths for reads and writes. Several options are available to customize your performance measurement including queue depth, overlapped I/O and even a comparison mode with the option to run continuously. Use ATTO Disk Benchmark to test any manufacturers RAID controllers, storage controllers, host adapters, hard drives and SSD drives and notice that ATTO products will consistently provide the highest level of performance to your storage.
Similar results to CrystalDiskMark above. Slightly disappointing. You can see how much better this drive seems to operate on some of the recent Z87 boards, over here.
