Crucial’s X6 is a well-designed USB 3.1 Gen-2 Type-C SSD that is highly portable and compatible with almost any host with a USB port. With a strong focus on value rather than blazing-fast speeds, the X6 is based on similar hardware to the company’s popular BX500 SSD and delivers up to 540MBps of sequential read throughput.
At just $0.09 per GB, the X6 is one of the cheapest portable SSDs with a 2TB capacity, and it offers enough performance for your game library or backing up your files, but falls short with heavy write workloads due to its slow native performance. write speeds of its QLC flash.
|Product||Crucial X6 1TB||Crucial X6 2TB|
|Capacity (User / Raw)||1000GB / 1024GB||2000GB / 2048GB|
|Interface / Protocol||USB-C / USB 3.2 Gen 2×1||USB-C / USB 3.2 Gen 2×1|
|Including||USB Type-C Cable||USB Type-C Cable|
|Interface controller:||ASMedia ASM235CM||ASMedia ASM235CM|
|NAND controller||Silicon Motion SM2259XT||Silicon Motion SM2259XT|
|drama||Crucial 96L QLC||Crucial 96L QLC|
|Default file system||exFAT||exFAT|
|Endurance||Drop resistant to 6.5 ft (2 m)||Drop resistant to 6.5 ft (2 m)|
|Dimensions (L x W x H)||11 x 69 x 64mm||11 x 69 x 64mm|
|Weight||42 grams||42 grams|
|Guarantee||3 years||3 years|
Crucial’s X6 comes in two capacities of 1TB and 2TB that cost $104.99 and $189.99 respectively. Crucially, the X6 delivers up to 540MBps of sequential read speed, but the company doesn’t give an official write speed.
The X6 relies on SLC caching to reach its peak measurements, and based on our testing, the 2TB model comes with a cache of around 250GB. The cache is dynamic, so the available capacity decreases as you fill the device.
The Crucial X6 is factory formatted with the exFAT file system and is compatible with Windows, macOS and Android, as well as devices such as the iPad Pro, Xbox and PlayStation game consoles. You must format the portable SSD with an NTFS file system to take advantage of the TRIM functionality.
Crucial’s X6 comes with a nine-inch USB 3.2 Gen-2 Type-C cable (10Gb/s), but lacks a USB Type-C to Type-A adapter (sold separately for $9.99). Unfortunately, the SSD lacks an activity light.
A closer look
Measuring 11 x 69 x 64 mm and weighing less than 42 grams, the Crucial X6 is a very compact portable SSD. The case of the Crucial X6 is plastic, but with such a small size and shape, the drive is quite durable. It is rated to withstand falls up to 6.5 feet, but it can certainly survive higher falls. We tested the disc by throwing it 15 feet in the air and landing on concrete, and it passed the challenge.
Internally, Crucial kept the X6 cool even with heavy use. Not only is the device wrapped in copper foil, but it also comes with thermal pads covering both sides of the PCBs.
Like Crucial’s X8, the X6 comes with QLC NAND flash, but instead of using an NVMe SSD like the X8, the X6 uses a BX500-esque SATA 6 Gbps SSD and a small Type-C adapter. Using Silicon Motion’s SM2259XT SSD controller, the X6 connects to the host via an ASMedia ASM235CM USB 3.2 Gen 2×1 to SATA 6Gbps bridge chip.
The SM2259XT is a DRAMless SATA 6Gbps SSD controller built on the 28nm node for low cost and power efficiency. It features a four-channel, single-core design that uses Silicon Motion’s proprietary NANDXtend ECC (1KB codeword LDPC + RAID) and end-to-end data path protection to ensure data integrity with the Micron 96-Layer QLC flash in either 2-plane or 4-plane operation.
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