Crucial X6 Portable SSD Review – 2TB Model Tested


CrystalDiskMark, AJA System Test, Blackmagic Disk Speed Test

CrystalDiskMark 7.0.0h x64

CrystalDiskMark is a small benchmark utility for drives and enables rapid measurement of sequential and random read/write speeds. Note that CDM only supports Native Command Queuing (NCQ) with a queue depth of 32 (as noted) and shows the highest score of five runs.


Benchmark Results: The Crucial X6 2TB drive is rated at up to 540 MB/s and we managed to hit 567 MB/s read and 387 MB/s write. That is a pretty impressive maximum sequential read speed, but the sequential write speed is nothing to write home about.

Crucial X6 Portable SSD CrystalDiskMark Peak

Benchmark Results: When compared to more than a dozen other models the Crucial X6 2TB had the second fastest read speeds of any SATA-based portable drive, but the third slowest write speeds.

Benchmark Results: With the queue depth lowered to just one the performance dropped down to 537.32 MB/s read and 378.14 MB/s write. This is is a bit more realistic than testing a portable drive at a queue depth of 8.

Benchmark Results: Almost all of the drives get less performance at QD1 and this is expected. That said, the Crucial X6 2TB had the highest QD1 read speed of any SATA-based portable SSD that we have tested. Once data is on this drive it can be read faster than most drives in this class. NVMe-based portable drives are still going to offer the highest speeds, but SATA-based drives are great mainstream products that are super affordable.

AJA System Test

AJA System Test:

AJA System Test by AJA Video Systems measures system disk performance using video test files of different resolutions, sizes and codecs. We selected the standard 4K UltraHD resolution, a test file size of 1GB and the ProRes 4444 codec to see how this drive does with regard to video rendering performance. ProRes 4444 is used for heavy effects work and deep color projects. We changed the default test file size from 1GB to 16GB to better represent real-world usage. The results from this benchmark help content creators with regards to rendering expectations, throughput, file read/write expectations for transfers and that kind of thing.

Aja Crucial X6 Benchmark

Benchmark Results: The AJA System Test results had the Crucial X6 2TB external drive topping out at 530 MB/s read and 348 MB/s write. The capture and playback was fairly smooth as performance didn’t dip down that far for this 16GB test.

Crucia X6 1TB Portable SSD AJA System Test Benchmark

Benchmark Results: The Crucial X6 2TB was 54 faster on read and 46% faster on writes than the Seagate One Touch 1TB SSD from 2019. Crucial had the highest read speed of any SATA-based portable SSD again!

Blackmagic Disk Speed Test

Blackmagic Design has a storage drive benchmarking tool that customers can use to test the speed of your disk performance for working with high quality video at different resolutions and codecs.

crucial x6 DiskSpeedTest

Benchmark Results: The Crucial X6 2TB drive topped out at around 530 MB/s read and 346 MB/s write on the Disk Speed Test by Blackmagic. The results show this drive will handle all 1080P and 2K content just fine, but showed that it will struggle with some 4K content. If you do Cinema DNG Raw or 10-bit YUV 4:2:2 video work with 2160p video you’ll want to look for a faster performing drive.