Samsung Portable SSD T3 Review


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Samsung 500GB Portable SSD T3 Review

By David Ramsey

Manufacturer: Samsung Electronics Co. Ltd.
Product Name: Portable SSD T3
Part Number: MU-PT500B
UPC: 88727613351
Price As Tested: $219.99 (Newegg / Amazon)

Full Disclosure: Samsung Electronics Co. Ltd. provided the product sample used in this article.

Samsung’s new Portable SSD T3 offers up to 2TB of amazingly fast external storage in a metal enclosure that’s smaller than a business card, if somewhat thicker. Equipped with the latest USB Type C connector implementing USB 3.1 (Gen.1) protocols, the Portable SSD T3 is now compatible with Android mobile devices that have Type C connectors, as well as Windows and Mac OS. Sporting Samsung’s VNAND flash memory architecture with Turbo Write technology, the drive also comes with easy-to-use security software for Windows, Mac, and Android. Is the Samsung Portable SSD T3 a compelling solution for fast external storage? Benchmark Reviews checks this new drive out to see what it’s got.

While SSDs are rapidly becoming the standard for newer desktop and laptop computers, portable USB-powered external drives have continued to use the older mechanical spinning-platter technology. There’s good reason for this: the 2.5″ drive mechanisms used in these devices are both inexpensive and capacious. What they are not, however, is “fast” or “appropriate for new mobile technology.”



Capacity 500 GB
Interface USB 3.1 (Gen.1)
Form Factor Custom, 74mm x 58mm x 10.5mm
NAND Samsung VNAND Flash
Max. Read Up to 450 MB/sec
Max. Write Up to 450 MB/sec
Warranty 3 years

Solid State vs Hard Disk

No matter how fast your processor, memory, or video card is, your computer will still be limited by its slowest component: the hard disk. While hard disk speed has improved tremendously since the “early days”, with large caches and 10,000RPM spindle speeds, even the fastest hard disk’s performance is glacial compared to the rest of the computer. The situation only gets worse with modern pre-emptive multitasking operating systems, where dozens of threads are running simultaneously and competing for your disk’s limited response time and bandwidth.

Consider: the average time to move a high-performance hard disk’s read/write head to a new track will be less than 10ms, which seems pretty fast. But your CPU is galloping along at billions of cycles per second, and will spend a significant amount of its time just waiting for the hard disk to fulfill its last request. Hard disk performance has plateaued in the last few years, running up against the physical limitations of spindle speeds, magnetic media density, and head servomotor performance. At the end of the day, disks are limited by the fact that they’re comprised of physical, moving parts.

With no moving parts, Solid State Drive technology removes this bottleneck. The difference an SSD makes to operational response times and program speeds is dramatic: while a faster video card makes your games faster, and a faster processor makes compute-bound tasks faster, Solid State Drive technology makes your entire system faster, improving initial response times by more than 450x (45,000%) for applications and Operating System software, when compared to their mechanical HDD counterparts. The biggest mistake PC hardware enthusiasts make with regard to SSD technology is grading them based on bandwidth speed alone. File transfer speeds are important, but only so long as the operational I/O performance can sustain that bandwidth under load.

Bandwidth Speed vs Operational Performance

As we’ve explained in our SSD Benchmark Tests: SATA IDE vs AHCI Mode guide, Solid State Drive performance revolves around two dynamics: bandwidth speed (MB/s) and operational performance I/O per second (IOPS). These two metrics work together, but one may be more important than the other. Consider this analogy: bandwidth determines how much cargo a ship can transport in one voyage, and operational IOPS performance is how fast that ship moves. By understanding this and applying it to SSD storage, there is a clear importance set on each variable depending on the task at hand.

For casual users, especially those with laptop or desktop computers that have been upgraded to use an SSD, the naturally quick response time is enough to automatically improve the user experience. Bandwidth speed is important, but only to the extent that operational performance meets the minimum needs of the system. If an SSD has a very high bandwidth speed but a low operational performance, it will take longer to load applications and boot the computer into Windows than if the SSD offered a higher IOPS performance.


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  1. BeX

    Driver needed for Mac? See warning for previous model at
    Mac Owners Should Hold Off on New Samsung T1 Flash SSD

    Can it be used to boot Mac and work from it all day long?

    RAID 0 inside as in SanDisk’s 1.92TB Extreme 900 Portable SSD? That is the best way to lose data (2x probability or more). One disk fails (or controller), all lost.

    1. David Ramsey

      The T3 drive comes with the necessary software to run it on a Mac, included the SAT driver mentioned in your link. I tried the drive on a Mac and had two minor issues: the first time I ran the installer, it installed the security software, but not the SAT driver, so the drive was inaccessible. Running the installer again brought up the option to install the SAT driver. Second, the “T3 Login Activator for Mac” utility you need to unlock an encrypted drive doesn’t “see” the T3 if it’s connected when you boot the Mac– you need to unplug the drive and then plug it in again.

      I copied over 200GB of video files to the drive (simply by dragging them over in the Finder) and saw a transfer rate of about 1GB every 7 seconds, or about 140MB/second.

      I don’t see any way to use the T3 as a boot drive for the Mac, since their installer will not install the security software and SAT driver on the T3 itself. You might be able to hack around this by manually transferring a preconfigured system folder, but I wouldn’t recommend it. In any case, an internal SSD would be much faster than a USB 3 SSD.

      1. BeX

        Thanks. I guess you mean when using the T3 security software. I guess, no problem when not using it.

        Sure an internal SSD could be faster, but booting from external Thunderbolt or SSD is very convenient as Mac to Go (like Windows to Go) to carry your stuff and boot from Mac at work and home.

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