Because all portable SSD are a box with internal off the shelves NVME SSD .. I am 100% sure you will find the same Version of SANDISK Extreme Pro as a stand alone NVME ... Blazing-fast performance lets you transfer a full-length 4K movie to drive in less than 15 seconds or 1000 photos in less than 25 seconds. Solid State USB Flash Drive. Get powerful NVMe™ solid state performance featuring 2000MB/s 2 read/write speeds in a portable drive that’s reliable enough to take on any adventure. Ruggedized design with a forged aluminum body to protect the SSD core and dissipate heat. Plus, a durable silicon rubber coating seeks to deliver higher impact resistance with its IP55 rating for water and dust resistance. 1 Up to three-meter drop protection and IP65 water and dust resistance 5 mean this durable drive can take a beating.

As for IOPS - what is the point of testing the device outside of its designed enclosure if it is forever going to be used in the enclosure? I can test portable SSDs' IOPS perfectly fine as they come. They are not going to be used as internal SSDs, only as portables. So, comparing the performance without the bridge chip they come with is irrelevant. And again, I've already reviewed the internal devices as linked above. ;)

nofanneeded said:Because all portable SSD are a box with internal off the shelves NVME SSD .. I am 100% sure you will find the same Version of SANDISK Extreme Pro as a stand alone NVME ... The Extreme Pro will appeal to a particular niche, one that craves for speed and wants something that is portable and can withstand more than a few bumps. It comes with a five-year warranty and its size and weight will turn it into a favourite storage companion especially with the hardware encryption.

Creative professionals know the value of storage space. With capacities of up to 2TB, 5 you’ll have enough room for the files you need to work on or deliver. We devote hundreds of hours of rigorous testing to help make sure your drive is worthy of your best work — and so you know your precious files are in good hands. Get extra peace of mind with a 5-year limited warranty 3 and a durable silicon shell that offers a premium feel and added protection to the drive’s exterior. It’s also important to note that for most users, there’s not much appreciable difference between 150 MB/s and 350 MB/s in terms of transfer speed. Anything over 100 MB/s feels lightning fast, whether you’re transferring single large video files, media collections, or system folders.

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Also, that enclosure is made with an older Alpine Ridge TB3 controller, not titan ridge or newer like on some of these portable SSDs. So, its older tech. The new SanDisk Extreme Pro v2 comes with some changes under the hood, too. A new ASMedia ASM2364 bridge controller communicates with the host at faster speeds because it has twice the PCIe lane count as the ASM2362, which means twice the throughput. Not only does it maintain a speedy 20 Gbps link while connected to a PCIe 3.0 x4 SSD, but it also features link power management to reduce idle power consumption. The controller also supports Trim to keep performance predictable. SanDisk Extreme Pro leverages our lightning-fast in-house NVMe technology to dramatically increase transfer speeds to up to 1050 MB/s 6 and fully saturate the USB 3.1 Gen 2 interface. 6 So you’ll be able to edit right from the drive – providing full-frame editing with little interruption while saving you time and keeping your computer’s internal storage free. The inner aluminum case makes the Extreme Pro feel quite durable, but beware that it has some sharp edges where the plastic meets the aluminum in the lever slide (if angled just right you could definitely cut yourself on the plastic edging). The slide lever also requires some significant pressure, which makes it difficult to extend and retract the connector. We’re not sure these literal corner-cutting measures are worth the added durability to the case. Also you need to tear down the External drives in each review to see which NVME SSD is in there ... it will also help you to determine TBW/IOPS if the external drive does not say just by discovering which NVME SSD they are using inside.