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The Crucial X6 4TB Portable SSD delivers massive, ultra-fast storage in a sleek, lightweight design. With up to 800MB/s read speeds and broad device compatibility, it’s engineered for professionals who demand speed, capacity, and durability on the go. Drop-proof and backed by Micron’s trusted technology, it’s your digital life’s ultimate safeguard.
















| Additional Features | Portable |
| Asin | B08W1KDM9K |
| Best Sellers Rank | #105 in External Solid State Drives |
| Brand | Crucial |
| Built In Media | Crucial X6 Portable SSD, Quick Start Guide, USB 3.2 Gen 2 to Type-C USB cable (10Gb/s) |
| Cache Memory Installed Size | 4 |
| Color | Black |
| Compatible Devices | Desktop, Gaming Console, Laptop |
| Compatible Video Game Console Models | Microsoft Xbox One, Sony PlayStation 4 |
| Connectivity Technology | USB |
| Customer Package Type | Deposit Crate |
| Customer Reviews | 4.2 4.2 out of 5 stars (1,473) 4.2 out of 5 stars |
| Data Transfer Rate | 800 megabits_per_second |
| Digital Storage Capacity | 4000 GB |
| Enclosure Material | NAND flash memory |
| Form Factor | Portable |
| Global Trade Identification Number | 00649528905765 |
| Hard Disk Description | Solid State Drive |
| Hard Disk Form Factor | 2.5 inches |
| Hard Disk Interface | USB 3.2 |
| Hard Disk Rotational Speed | 7200 |
| Hard Drive Size | 4 TB |
| Hardware Connectivity | USB 3.2 Gen 2 |
| Hardware Platform | Mac, PC |
| Installation Type | Plug In |
| Item Dimensions L X W X Thickness | 2.72"L x 2.52"W x 0.43"Th |
| Item Weight | 40.5 g |
| Manufacturer | Crucial |
| Media Speed | 800 MB/s |
| Mfr Part Number | CT4000X6SSD9 |
| Model Name | Crucial X6 |
| Model Number | CT4000X6SSD9 |
| Number Of Items | 1 |
| Read Speed | 800 megabytes_per_second |
| Specific Uses For Product | Multimedia |
| Unit Count | 1 count |
| Upc | 649528905765 |
User
Tiny, amazing storage size
This 4tb external SSD was about 60% more expensive than comparable external HDs, but it offers a free really key advantages.It's very tiny. I looked at the pictures, but I still didn't get just how tiny it actually is. I love that it takes up virtually no space and can be easily transported in a pocket. You could put it in that little pocket in your jeans.It doesn't need a separate power cord. This is actually my favorite feature. One less cord on my desk it always a great deal.It's much faster than an external HD. I'm connecting to an older iMac, which only has USB 2, but if I ever connect it to my laptop I'll be able to take advantage of USB-C speeds. Compared to an HD, it also doesn't have to spin up, which takes my previous western digital HD up to v 10 seconds, so I'm still seeing a nice speed boost.There are bigger, faster SSDs, but I will take the small speed hit for the size advantage.I did not have to format for Mac, as some reviewers said. Mine came in exfat, which is compatible between both.SSDs are much more reliable than HDs, in both longevity and shock resistance. This SSD is small enough to easily transport, which means you have to consider dropping it (or stopping whatever bag it's in). SSDs withstand about 50x more shock than HDs (~1500g vs ~30g).It's quieter and uses less power than an HD.
User
Still going strong a year later. Still very fast.
I’ve been using this drive for about 14 months now and I love it. I’ve filled it to over 2TB and it’s still writing at 400Mb/s. I’m not sure why so many reviewers here are going on about design limitations, blah blah…. but in reality, it’s working great here. I’m likely going to buy another one.Like any drive, failures can occur. Make sure you have backups. Never put all your digital eggs in one basket drive! (And use a good cable!! Not all USB-C cables are the same.)
User
Great 4TB SSD for TimeMachine and other MacBook Air backups
Very happy with this SSD. It's not the fastest SSD I've used, but it's still very, very fast for TimeMachine and other backups of a MacBook Air (M2). I use the Mac's encryption for all these backups so that I can travel with it without worrying about it falling into the wrong hands. A sticker with "Please call XXX-XXX-XXXX if found" fits perfectly. It's very small (smallest SSD I've ever owned).Decent price on Amazon at $346 for 4TB version in Sept. 2022.
User
Slow write speeds after 10 minutes
This is a good drive if you are trying to write small amounts of data or back up small projects (500 gb or less). Anything over that volume and the drive begins to heat up that it then throttles itself to write speeds of less than 100 MB/s. I went to back up my computer of 1.5 TB’s and what started out as a 45-50 minute job quickly devolved into 6+ hours. For the first 10 minutes, write speeds were as advertised as the drive had copied 350 gb in about 10 minutes at a pace of about 680 MB/s to 700 MB/s. After the 10 minute mark the drive started to get hot and has now slowed down to 70 MB/s (1/10th the original speed). No other programs were running during this time as I wanted to ensure a stable backup copy. Save your money and put it to a higher class drive and transfer system. I usually am a big fan of crucial products but this product is not worth the price.Update: Lowering review to 1 star because after testing the same system with different backup drives but utilizing the same method, data volume and software I was able to complete a full 1.5 TB backup on other drives (with a lower sustained read/write speed than the crucial of 550 MB/s) in 1 hour 15 minutes. Differential backups took only 11 minutes compared to this crucial drive taking 6 hours and 51 minutes for a full backup and 4 hours 11 minutes for a differential backup of the same data volume. I will be submitting a warranty claim as these drives from Crucial are extremely flawed which probably explains why it was put on sale for a cheap price. Tested this Crucial drive on both a Windows 10 Pro system and 2020 iMac (the Crucial drive actually caused the backup program on Windows to crash twice while the other 3 different manufacturer SSD drives caused no issues).
User
Very portable large amount of storage for a great price
Love how small this is. Works great and so far has performed incredibly well for us. Plug and Play makes installation a breeze. Being from a brand like Crucial, I have no worries of data loss or corruption. I have used without issue for months now and would highly recommend to others as an IT professional.
User
Fantastic storage and never had a problem with it...
I've had a lot of various type of storage devices, but the "Crucial 4TB" is one of the best I have had so far. I already own 5 of these and I have not had a problem since I started using them.These devices are very solid and I have not had a problem with stability nor storage. They are super light weight and very easy to fit in any compartment of a backpack, case, or other form of carry-on. I been able to store music, videos, and zip/rar files without a problem. Reading and writing files back-and-forth have not been an issue at all, especially if you use it to store videos and music, and you want to hear and play back video/audio files directly from the storage device.There's no worry about stability, I have been using these devices for over 2 years now and have never had one give me read issues. (Although I do constantly do defrags and checks regularly so that usually helps)There are a few concerns you will need to know when you order these...1.) Although read/write are very stable, I have never had one that reads faster than 50+ Mb/s2.) This device is not ideal for copying tons of 5Kb-100Kb files, it's very slow to write when it comes to several thousand image or text files (Or similar files of similar size), I was copying over several image files I have stored and it took hours to copy over. Large size (500 Mb - 30 Gb) files copy over quickly and easily, but several small size files (5Kb or less to 100Kb) took forever. Keep this in mind if you need to move tons of image or text files or several thousand other small-size files3.) It's best to also order extra USB-C codes as the cord that comes with the device is only about 3 inches long. Plus, both ends of the cord are USB-C. So unless you have a USB-C reader, you might wanted to order some extra codes for it. You can usually get a pack of 3 for about $5-$10.4.) When it comes to listening to music or watching a movie, I have never had a problem with either file types when it comes to reading the files. However, do not watch a movie or listen to music while files are being transferred as it will interfere with the read/write speeds. Plus, doing so will interfere with the video and audio files and will cause your video and audio files to skip or momentarily stop playing as files are being transferred.Other than what is mentioned, I have not had a real serious issues with the storage devices. Keep doing defrags every so often and they will always work great.
User
Blazing Fast and Ultra-Portable: My Review of the Crucial X6 4TB Portable SSD HDs
I purchased two Crucial X6 4TB Portable SSD HDs back in December of 2022 and I couldn't be more pleased with their performance. As someone who travels around the world for work, I rely on these drives to store all my important files and media. One drive is dedicated to my work files, while the other is for my entertainment needs, holding hundreds of TV series and movies that I can easily access from my MacBook or iPad thanks to the USB C connection and the high speed at which these drives run.One of the things I love about these drives is their durability. With no moving parts, I feel extremely confident that they will last a long time. I personally purchased the L LTGEM EVA Hard Storage Case for these drives, and they fit perfectly, with two drives per case. I've dropped and knocked these drives a few times, but they still work perfectly.In fact, I'm so impressed with these drives that I'm about to purchase four more to backup all my family photos, videos, and special files, which I will keep locked away in my fireproof safe. That's how confident I am in their quality.Overall, I highly recommend the Crucial X6 4TB Portable SSD HDs. Their size is amazing, and the speed is blazing fast, making them perfect for video editing. And speaking of size, I love that I can put one of these 4TB drives in my shirt pocket when I'm in the office and take it from conference room to conference room without even noticing the weight.In conclusion, these drives are amazing, and I can't recommend them enough.
User
Crucial X6 SSD using a USB port is approximately 3X to 4X faster than each of my non-SSDs.
Pros: Much faster than each of the non-SSD external drives that I have connected to my desktop computer's USB 3.0 ports.Cons: The cable length is too short (at 9 inches connected with only the C-type connector, or 10.5 inches when the C-type connector is connected to a USB-A type adapter).Comparison tests that I ran:My computer (in case this matters) is a Windows 10 with an Intel i7-4790K CPU. In side-by-side comparisons of the ''copy'' files function, testing the same set of 5 different file folders, copied to a Crucial X6 SSD and also copied to a Seagate Portable HDD and a Western Digital WD Elements WESD Portable HDD, with all 3 external drives connected to three different USB 3.0 ports, the Crucial X6 SSD was faster, ranging from roughly 2X faster to 7X faster than this Seagate HDD and Western Digital HDD. Overall, in a set of 5 tests, the Crucial X6 averaged approximately 3X to 4X faster versus each of these two HDDs.The copy speeds (of this Crucial) ranged from a low of ~ 10 MBps to 400 MBps. Large files (such as video >= 1 GB files) copied much faster than small files (such as small low resolution photos < 1 MB file size).Caveat: My review does NOT cover longevity or reliability of this product (Crucial X6 SSD) because I have only used it for 12 days.
User
Excellent
Excellent form factor, read/write speed is good, DiskMark seq read = 740 MB/S, seq write=790 MB/S
User
good
good
User
Just Amazing - It did give me some issues at the beginning though
This drive is just amazing. So tiny, but packs 4Terabytes.I did have weird behavior at the beginning though. I got it to replace my previous 2Tb disk drive, because it was almost full, so my first action was copying the large amount of files. To my surprise the speed was like 40-120kb/s which is very very slow. I assumed that it was because of they were a lot of very tiny files. After it went through the folders with the small files, it went quicker at around 100mb/s which was probably limited by my old external drive, but then settled for 30-60 mb/s. Eventually it finished copying everything, but when i tried to run programs from it or access big files on it, or copy things to it, it just felt sluggish and not very well responsive. So i decided to reformat the drive as a last resort before sending it back, this time with NTFS instead of ExFat that it came on. When that finished, the drive worked much better, copied everything again a lot faster (still limited by my old drive) and now the programs running from it work perfectly, faster than ever. Also copying things from pc to the crucial is now at over 300mb/s with a normal usb 3.0 port. I don't know if this was just a "me" problem, but I'm very happy everything worked out at the end. Can only recommend the drive.Cons: its so tiny, i hope i don't lose it :D.
User
Absolutely tiny, but packs a mighty punch.
I really like this thing. For the longest time, I was using LaCie's Porsche USB-C drives due to their high storage to value ratio and durable design. However, at the end of the day, they were still 5400-7200 RPM drives inside very nice shells. Quick aside, the old Porsche shells were so sharp, one actually sliced my finger open when I tried to extract the drive from it. These drives are quite solid overall, but are definitely heavy, and they have to constantly re-index and load content. I'd pull up a video on them and 75% of the time, they have a 10-15 second buffer to start playing the content again. Sometimes it would even do this mid-playback.This tiny little thing has had no such problems. As a true SSD, it is 100% silent and loads content in an instant. Not once since I've had it has it lagged, buffered or crashed anything I've loaded from it. It's so small that it's not a detrimental add to a travel kit, it's a storage peace-of-mind for practically no downsides.I will say, it's overall not as fast as the SSD in the M1 Pro MacBook Pro I connect it to. However, Apple sticks ridiculously fast drives in these, I honestly don't know many other drives that don't cost the same as a new MacBook that can rival the speeds of those. Past that little comparison, these are nice and speedy, and honestly well worth the additional investment. Maybe you don't need 4TB like I do, but the smaller capacity should still very much impress.
User
Excelente opción para tener respaldos o usar con la Laptop
Este producto vale mucho la pena. Yo tuve la oportunidad de comprarlo con un buen descuento y con una promoción de meses sin intereses, ya que si es caro, pero si se compara contra otras opciones es muy competitivo en precios, pero tiene mejores características. Es muy pequeño y si se conecta por un puerto USB-C la velocidad de transmisión es muy rápida. Un archivo de 1Gb lo copio en menos de 30 segundos.Excelente compra.
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