SANDISK 4TB Extreme PRO Portable SSD - Up to 2000MB/s - USB-C, USB 3.2 Gen 2x2, IP65 Water and Dust Resistance, Updated Firmware - External Solid State Drive - SDSSDE81-4T00-G25,Black

I've been very happy with this purchase. It's incredibly fast, easy to use, and compact enough to take anywhere. File transfers are quick, and the drive has performed flawlessly since I started using it. The build quality feels solid, and I appreciate the added peace of mind having a back-up of my files.

OK, so I read many of the reviews of this drive, and I believe that people who are saying this doesn't give them the speeds that it's rated at, may not be testing it correctly. There are MANY factors that go into properly testing the speed of an HD ... OS file buffering/caching being a HUGE one. The drive that I bought, SDSSDE81-1T00-G25 - SanDisk 1TB Extreme PRO Portable SSD - Up to 2000MB/s, boasts speeds up to 2000MB/s (read/write). If you plug this drive into your computer and you use the blue USB 3.0 cable, you will not get the maximum speed out of this device because the max speed for USB 3.0 is 625MB/s. If your computer happens to truly have a USB 3.2 Gen 2x2 port, and you have a cable that supports that, then you could theoretically get the max speed out of this drive. Next, if your computer has a USB-C port, is it truly a USB 3.1 or better (or a Thunderbolt) port, or just a USB-C 3.0 port. Finally you have all of the OS file buffering stuff to deal with. Once you plug this drive in, you'll need to make sure you've set your OS's file buffering/caching to it's highest performance settings. Even with that, testing may not reveal the correct speeds because your OS may not buffer enough of the files being transferred to accurately test the read/write speeds of the drive. Another area for potential speed (and max file size) issues is the file system. You'll most likely want to format (keep) this SanDisk external SSD with exFAT (what it comes formatted in) unless you're going to use it 100% exclusively with your own computer (exFAT is readable/writeable in most OSes). If that's the case, it might be faster performing in your OS's native file system format, but that's not a for sure thing. It'll depend on the size and number of files that you're planning on using it to read/write. Several large files compared to thousands of small files makes a difference in performance too (you may want to look into this further yourself if it is a concern to you). I have a WIndows PC. After doing the stuff I mentioned above, when I do a large file transfer to the drive, it starts out at 1.7GB/s and then begins to drop to a steady 915MB/s or so. This reflects close to the drive's specs at the start, but Windows file buffering doesn't cache enough of the file to get a continual accurate reading, hence the speed drop in write speed. In testing out the read speed, I was only able to get around 700MB/s, but that is because I am copying a file from a super fast HD (this Sandisk drive) to a much slower HD (my internal PC HD), so it can't transfer any faster than this. I also tested reading and writing just from this Sandisk drive and got around the same 700MB/s, however, this is not a fair nor accurate test, because the same drive is doing the reading AND the writing. Finally, I ran the Blackmagic Disk Speed Test that everyone else seems to be using to test drive speeds, and got only 915MB/s read and write speeds. We know this is not accurate since I got 1.73GB/s in my own testing. So all of this to say that I believe this drive is probably fully capable of its advertised speeds, but you will likely not see speeds that fast due to OS limitations, other drive limitations, hardware limitations (your cable and/or port), etc. I'm happy with it because it averages about 1sec/GB throughput, and for files that Windows can buffer completely, I'm getting much closer to the spec's speeds. Hopefully all of this info. is helpful. Just remember, you get the best possible speed out of this drive by connecting it to a true Thunderbolt 3 port on your computer and by setting your OS's caching/buffering settings to maximize the performance (even a USB-C 3.1 or better port will get you the best speed out of this drive).

I recently bought the SanDisk 4TB Extreme PRO Portable SSD, and I must say, I am thoroughly impressed with its performance. This compact and powerful storage device has proven to be a game-changer in terms of speed, form factor, and reliability, especially for film productions. Let's start with speed. The SanDisk Extreme PRO SSD lives up to its name and delivers mind-bogglingly fast transfer rates. I was amazed at how quickly I could move large files, such as high-resolution videos and RAW images. With read speeds of up to 2000MB/s and write speeds of up to 2000MB/s, this SSD ensures that my workflow remains smooth and efficient. It significantly reduces the time spent waiting for file transfers to complete, allowing me to focus on my creative work. Another standout feature of the SanDisk Extreme PRO SSD is its super small form factor. Despite its immense storage capacity of 4TB, it remains incredibly compact and lightweight. This makes it extremely portable and convenient for on-the-go professionals like myself. Whether I'm shooting on location or traveling between sets, this SSD easily fits into my bag or pocket without adding any significant bulk. The reliability of the SanDisk Extreme PRO SSD is also worth mentioning. I have never experienced any data loss or corruption while using this drive. SanDisk is renowned for its high-quality storage solutions, and this SSD is no exception. Its rugged design, shock resistance, and durable construction make it ideal for the demanding environment of film productions. I have full confidence in the safety and security of my data when using this device. In conclusion, the SanDisk 4TB Extreme PRO Portable SSD is a must-have tool for filmmakers and professionals who require fast and reliable storage. Its exceptional speed, compact form factor, and robust design make it a top choice for anyone working with large media files. The performance of this SSD, with its incredible read and write speeds of up to 2000MB/s, has exceeded my expectations, and I can confidently say that I have never had such fast transfers in my filmmaking career. I highly recommend the SanDisk Extreme PRO SSD to anyone seeking a high-performance storage solution for their creative endeavors.

TL;DR: This drive personally verified capable of large, sustained reads for hours if needed and had no problem transferring 500GB+ of data (both read and write) without slowing down at all. If you're tired of external SSDs that slow down due to cache outs and/or overheating, this drive will take care of those issues. ------- I've gone through several Samsung and Crucial external SSDs and one common thing is they all "cache out" sooner than later or even overheat and transfer speeds quickly plummet (sub 50-75MB/sec in some instances) when you're doing large (>100GB) transfers or if you're using the drive as an attached active media for real time use like using a replicated database or photo editing. If the job ends up R/W > 75-100GB+ I will always see drive slow downs consistently on those Samsung and Crucial models. They are good for small, quick transfers especially sub 25GB but anything remotely large and sustained and the slowdown happens. After doing a lot of research and reading along with personal recommendation from some fellow developers and editors, I gave the SanDisk 2TB Extreme PRO (you know it's serious when "PRO" is all in caps) a try. It is very compact and nicely built. Excellent external texture with even a corner clip hole. It comes with both USB-A and USB-C USB 3.2 2x2 cables and is ready for data transfers up to 2000MB/s. So how did it fair? I plugged it into my 1000MB/s rated USB-C port to backup over 500GB of data in one sitting and sat there and watched it transfer the entire set of data with zero slowdowns sometimes peaking OVER 1000MB/sec on large contiguous data asset transfers. This is a first among the pile of external drives I've used over the last 10 years. When it came time to copy the information back, the sustained speeds were still there during the entire transfer. I used it even to run some games for testing and it had no problems for Steam or Blizzard games albeit for normal use I use internal storage. I also did a couple of dev projects externally and it worked absolutely fantastic. As with most external drives, it does get warm during heavy use but nothing that is worrisome. I was able to pick up and hold the drive no problem. I tested it on both Windows 10 and 11 and Windows 11 is slightly slower than Windows 10 in data transfers under the same conditions but still peaked over 900MB/sec. It isn't the Sandisk's fault but the OS. Overall, I can't recommend this drive highly enough. It fixed all the issues I had grown used to accepting with my previous Samsung and Crucial models with expected slowdowns (it wasn't an issue of "if" but "when") and 2TB is spacious enough for now. If I end up needing more capacity I will pick up the 4TB version if needed but as for the 2TB model specifically? Highly recommended. 5/5

DO NOT BUY THIS DRIVE - SanDisk Unlocker Software locked me out of my drive and I lost all of my data. I had been using this drive for months to backup photos of my kids from older HDD Disk Drives, then one day all of my folders were grayed out and it prompted me to install SanDisk Unlocker Software. I installed the software hoping to regain access to all of my files, especially those of my kids! It asked me to add a password for the first time. I followed that process, then it got stuck. I closed the app and reopened it, then it keeps denying my password. Now I’m completely locked out of the drive the I had spent hours transferring our family’s precious memories on to this drive. I’m now going to have to start the whole process all over again. The only way to use the drive again is to WIPE ALL OF MY DATA and remove their janky software. NOTE: In the screenshot I have added to this review, every folder is grayed out even though their awfully designed and janky looking software says my drives are unlocked. I wish they would have told us that eventually we would have be forced to start using this software before I started using this drive. I would have never bought this drive if I knew I’d have to use their Janky Mother F - JMF security software! My hope for you is that you’ll read this review and NOT PURCHASE THIS OR ANY SANDISK SSD Drive!

Love this drive. Fast. Light. Small.

Right now, the only computer equipment that I have is an ASUS 15 inch Vivobook Laptop PC. My desktop self destructed and I gave my Dell laptop to my daughter. Compared to similar portable SSD's, I was impressed by how durable this Sandisk SSD is (water resistant & dust resistant and survives ordinary drops). I have not dropped it or placed it in water (yet) but it is nice to know that this Sandisk will survive through harsh conditions. I read several negative reviews about how super HOT this SSD gets. So I decided to purchase the Sandisk Extreme Pro Portable SSD 2 TB New Generation (which is a lot more SSD than I really need). Why? The SanDisk Extreme PRO® Portable SSD is housed in a forged aluminum chassis that also acts as a heatsink, saving you time through higher sustained speeds (it is less likely to overheat). The Extreme Pro is slightly larger than the regular Extreme - which also helps it to dissipate heat (although both models are very portable). In other words, this model promises to never slow down due to overheating. In my experience: My Extreme Pro NEVER gets hot, in fact, it seldom gets warm. My Extreme Pro is cool to the touch except the rare times when it is slightly warm. Note: I am not extremely demanding. I read and write small files to my Sandisk from time to to time during the day. Otherwise, I leave the Sandisk plugged to my ASUS laptop all day One thing I noticed about my Sandisk Extreme Pro. If there is zero read-write activity for an extended period, my Extreme Pro goes to sleep. And it drops to room temperature. This situation can prevail for minutes or 24-7 with my setup. My Extreme Pro Portable NEVER gets hot. As you read other reviews by other buyers, it appears (I am guessing here) that some users are in a situation where their Extreme Pro or Extreme never goes to sleep (and their device gets SUPER HOT). In my situation, if I attempt to write to my Extreme Pro after it has not experienced any read-write activity for an extended period, it takes a moment to "wake-up" my Extreme Pro. Not a problem because I know this feature allows my Extreme Pro to stay nice and cool (resulting in a longer life). I have not read anything about this feature. If you are interested in how this "sleep" feature works or if your Sandisk portable SSD gets SUPER HOT, contact Sandisk and ask for further details. I did encounter one problem. I have no idea what causes this and neither does Sandisk Technical Support. When I connect this device to the single USB C port in my laptop, Windows OS cannot "see" this SSD. Yet, my PC works just fine with another external HDD that I connect to this same USB C port. So, I connect my Sandisk to a Type A USB 3.0 port (and the Sandisk works just fine). I do not have another PC to connect my Sandisk SSD to (which might give me a clue what is going on). It is entirely possible that something is strange with the USB C port on my laptop, so I cannot blame the Sandisk SSD. This is a revision written weeks later: I purchased a new laptop. Exactly the same kind as I already had, a ASUS Vivobook 15.6" laptop. Because I really like the keyboard on the ASUS. The USB C port on my new laptop works just fine with my Sandisk Extreme Pro SSD. So the problem lies with my older ASUS Vivobook (read above). My Sandisk Extreme Pro SSD works perfectly. I am happy with my Sandisk Extreme Pro Portable SSD 2 TB New Generation and I intend to keep it long after my ASUS Vivobooks die. My only negative: I wish the Sandisk Extreme Pro Portable SSD had an activity light (so I could tell [at a glance] when it is reading-writing). Note that this device is totally silent and warm to the touch, so not always obvious when it is reading-writing data. Not a big enough negative for me to deduct a star. update: 8 months after purchase. My Sandisk Extreme Pro performing well, going strong. Zero problems. Connected to my ASUS laptop all the time using the USB C port, a laptop I use about 12 hours a day, my Extreme Pro gets warm but not hot.

Although I had read bad reviews about this product about data loss and crashing but I still chose it because I have friends using same product for a while now and works well as it stands so finally decided to give it a try. Don’t know yet how it will serve me since I just unboxed it. So as it stands I’m gonna give it 4 stars Ease of installation: Very easy to install. Came formatting ExFAT compatible with my iPad Portable: Very portable. Little bit longer than a credit card Compatibility: Haven’t texted range of compatibility but works great with my iPad Pro Security: Came with files to establish encryption but unfortunately encrypted disk doesn’t work on the iPad. Not readable on iPad when encrypted Performance: Great performance as it stands. Heats on high duty transfers. Another red flag is that it’s a piece of power eating accessory. Consumes iPad battery faster when connected Weight: Weighs just as it should. Feel good quality

Przetestowana prędkość to 1012 MB/s odczyt, 1019 MB/s zapis, a więc prawie 2 razy mniej niż w specyfikacji. Sprawdzone na oryginalnym kablu i innym 40GB/s. Wersje Extreme, sporo tańsza, ma niewiele mniejszą prędkość (777 i 958), bliższą podawanej w opisie.

The SanDisk Extreme PRO Portable SSD delivers excellent performance and is one of the fastest portable drives I’ve used. The compact size makes it easy to carry around, and the rugged design gives extra confidence for travel or everyday use. The USB-C connection is convenient, and setup was basically plug-and-play on both laptop and desktop devices. The only downside is that you need compatible hardware to fully take advantage of the advertised 2000MB/s speeds. It’s also priced higher than basic portable SSDs, but the speed and durability justify the cost for professional or heavy users.

So small and convenient. I bought the Monterey color as well and it is similar transfer speed. Just Wow! For both of them. It's super fast and the perfect size. I'm using it as an external drive, I truly like the size..wanted alot of space..just excellent for what I need to store. I would recommend. Thanks Seller Amazon!

Trabajar super bien, excelente compra

Muito bom 👍