Samsung’s Portable SSD P9 is the first USB4 drive in the company’s portable lineup, rated at up to 4,000 MB/s sequential reads, and Tom’s Hardware reviewed it on Oct. 27, 2026 at $649.99 for the 2TB model. That price puts the best external SSD for Mac question in a new spot. The fastest drive you can buy is now twice as quick on paper as the 20Gbps drives that ruled the category last year, and it costs far more.
Speed on paper is only half of the Mac story. A portable SSD runs at the slowest link in the chain, and Macs ship with a mix of ports. Some carry Thunderbolt or USB4 ports that can feed a 40Gbps drive. Others top out at 10Gbps. If your Mac sits in the second group, a $650 drive behaves like a $150 one.
This guide compares four portable NVMe drives that Mac owners will actually see on shelves in late October 2026: the Samsung P9, the Samsung T9, the Crucial X10 Pro and the OWC Envoy Pro FX. It leans on rated specs, three independent test sources and current US prices. If you want a head-to-head of the P9 against rival USB4 drives on Windows hardware, our Samsung P9 vs LaCie vs SanDisk comparison covers that ground. Here the question is narrower: which drive suits a Mac, and which port does it need?
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Quick Verdict: Which External SSD Fits Which Mac
Start with the port, then pick the drive. That order saves money for most buyers. Here is the short version before the details.
- Mac with a Thunderbolt or USB4 port and a video workload: the Samsung P9 is the fastest option in this group. Expect to pay for it.
- Mac with a Thunderbolt or USB4 port and a tighter budget: the Samsung T9 or Crucial X10 Pro leave a lot of speed headroom unused but cost far less per terabyte.
- Mac limited to 10Gbps USB-C ports: do not pay for 20Gbps or 40Gbps speed you cannot reach. A slower, cheaper drive makes more sense.
- Older Thunderbolt 3 Mac in a creative studio: the OWC Envoy Pro FX still lists a Thunderbolt plus USB-C design, though OWC’s own October promotion skipped it.
- Time Machine or archive duty: capacity and price per terabyte matter more than peak speed.
Our Samsung T9 vs SanDisk vs Crucial X10 Pro price breakdown goes deeper on the 20Gbps tier if you land there. The rest of this piece explains the verdict with numbers.
One more caveat before the details. Every speed in the spec table below is a vendor rating, not a result from our bench. We did not run these drives ourselves. The benchmark section later in the article pulls measured results from Tom’s Hardware and Dong Knows Tech, and it labels each figure with its source.
What Changed in October 2026: The P9 Arrives, the T9 Stays
Samsung announced the P9 and the lower-tier P7 on Aug. 26, 2026, at Gamescom, according to Samsung’s newsroom and Dong Knows Tech. Samsung’s India product page lists Aug. 31, 2026 as the P9 launch date, and a global rollout followed in September. The company markets the 8TB version as the first 8TB USB4 portable SSD, and the P9 also picked up a CES 2026 Innovation Award earlier in the year.
The drive sells in 1TB, 2TB, 4TB and 8TB capacities. Availability lags the announcement. Tom’s Hardware reported on Oct. 27 that only the 2TB model was readily in stock, and Samsung’s US pages reportedly showed several capacities as out of stock between Oct. 21 and Oct. 28. Treat any plan to buy a 4TB or 8TB P9 this week as a waiting game.
The older T9 has not gone away. Samsung’s US store still lists the 1TB and 2TB T9, and Samsung India lists a 4TB model. No official source we found announces a retirement, a rename or a replacement. In practice the T9 now sits one step below the P9 in Samsung’s range: USB 3.2 Gen 2×2 at 20Gbps against the P9’s USB4 at 40Gbps. A pre-October claim that the T9 is Samsung’s fastest portable SSD no longer holds. Dong Knows Tech, which called the T9 Samsung’s fastest USB portable drive last year, says outright that the P9 took that title.
The other two drives in this comparison did not change this quarter. The Crucial X10 Pro remains a 20Gbps USB 3.2 Gen 2×2 drive, and our research found no confirmed refresh, price change or USB4 successor in the past three months. The OWC Envoy Pro FX appears in reseller catalogs in 1TB, 2TB and 4TB versions. One third-party listing described a 4TB version on Oct. 27 and 28, but OWC’s own Oct. 1 promotion highlighted the newer Envoy Pro mini instead. That omission does not prove the FX is discontinued. It does suggest OWC is steering buyers elsewhere.
Price is the other change. Memory and flash costs have climbed because of AI demand, and Tom’s Hardware argued that a USB4 drive of this class would have cost roughly a third as much a little over a year ago. Our look at the NAND price surge behind the P9’s price tag explains the supply side. For Mac buyers the practical effect is simple. Waiting for a price drop has not paid off so far this year.
Specs Table: P9 vs T9 vs X10 Pro vs Envoy Pro FX
The table below uses vendor-rated figures and the details reviewers confirmed. Where we could not confirm a number from a current source, the cell says so instead of guessing. That affects the Envoy Pro FX most, because OWC’s direct pages did not return current figures.
| Spec | Samsung P9 | Samsung T9 | Crucial X10 Pro | OWC Envoy Pro FX |
|---|---|---|---|---|
| Interface | USB4 Gen 3×2 (40Gbps) | USB 3.2 Gen 2×2 (20Gbps) | USB 3.2 Gen 2×2 (20Gbps class) | Thunderbolt 3 plus USB-C (listing says 40Gb/s Thunderbolt, 10Gb/s USB-C) |
| Rated sequential read | Up to 4,000 MB/s | Up to 2,000 MB/s | Up to 2,100 MB/s | Not confirmed in current sources |
| Rated sequential write | Up to 3,800 MB/s (3,700 MB/s on 1TB) | Up to 2,000 MB/s | Up to 2,000 MB/s | Not confirmed in current sources |
| Capacities | 1TB, 2TB, 4TB, 8TB | 1TB, 2TB, 4TB | 1TB, 2TB, 4TB | 1TB, 2TB, 4TB in reseller listings |
| Warranty | 5 years | 5 years | Not confirmed in current sources | Not confirmed in current sources |
| Drop rating | 2 meters (per Tom’s Hardware) | Up to 3 meters | Not confirmed in current sources | Not confirmed in current sources |
| Dust and water rating | None listed by Samsung | No official IP rating | IP55 | Not confirmed in current sources |
| Hardware encryption | 256-bit hardware encryption | Supported through Samsung software | Not confirmed in current sources | Not confirmed in current sources |
| Size | 3.5 x 2.6 x 0.3 in | 0.55 in thick | Not confirmed in current sources | Not confirmed in current sources |
| Weight | 0.21 lb | Not confirmed in current sources | Not confirmed in current sources | Not confirmed in current sources |
| Shell | Metal, rubber base | Rubber-textured coating | Not confirmed in current sources | Not confirmed in current sources |
| Software | Samsung Magician | Samsung Magician | Not confirmed in current sources | Not confirmed in current sources |
| Launch | Announced Aug. 26, 2026, listed Aug. 31, 2026 | 2023 | Unchanged, no 2026 refresh found | Still listed, 4TB version reported Oct. 28, 2026 |
| Status on Oct. 29, 2026 | Current Samsung flagship | Active, still sold | Active, still sold | Active in reseller catalogs |
Two lines in the table deserve a closer look. First, the P9 is thinner and metal-clad, while the T9 is thicker and wrapped in a rubber coating that Tom’s Hardware said collects dust. Second, the P9 has no dust or water rating at all, and the X10 Pro does. A photographer shooting near sand or rain should read that row twice.
Why Your Mac’s Port Decides the Best External SSD for Mac
Portable SSD marketing leads with the drive’s top speed. The port on your Mac sets the real ceiling. A drive negotiates a link with the host, and the link speed becomes the cap. Dong Knows Tech makes the point plainly in its P9 review: plug the P9 into a 5Gbps or 10Gbps USB port and its performance will look like older drives of that class. The Arekore buyer’s guide, published Oct. 13, 2026, reaches the same conclusion for the 20Gbps tier and calls the interface the real dividing line between drives.
That research also flags a Mac-specific trap. The 2,100 MB/s and 2,000 MB/s ratings on the Crucial X10 Pro apply to hosts that support USB 3.2 Gen 2×2. On machines limited to 10Gbps, which includes many Apple systems, the same drive can land near the 10Gbps ceiling. Buyers who spend extra on a 20Gbps drive for a Mac should confirm what their specific machine negotiates before they pay. Check your Mac’s Tech Specs page at Apple and look for the exact wording on each port. Thunderbolt or USB4 means a 40Gbps path is possible. A plain USB 3 label usually means 10Gbps or less.
Port-to-drive matching table
| Mac port | Link speed ceiling | What a USB4 drive (P9) gives you | What a 20Gbps drive (T9, X10 Pro) gives you | Best fit |
|---|---|---|---|---|
| USB 3 (5Gbps) | 5Gbps | Works, capped at 5Gbps | Works, capped at 5Gbps | Neither, buy a cheap drive |
| USB 3 (10Gbps) | 10Gbps | Works, capped at 10Gbps | Works, often capped at 10Gbps | A 10Gbps-class drive |
| Thunderbolt 3 or 4 | 40Gbps link, host-dependent for USB drives | Strong results with a USB4-capable host | Check what your Mac negotiates before assuming 20Gbps | P9 if budget allows, Envoy Pro FX for Thunderbolt-native workflows |
| USB4 | 40Gbps | Full rated speed possible | 20Gbps drive runs at its own ceiling | P9 |
Read that table as a decision aid, not a lab result. Interface ceilings are standard figures. Real throughput depends on the Mac model, the cable and the drive’s controller. Dong Knows Tech notes the P9 stays backward compatible with USB 3.2 Gen 2×2 down through USB 2.0, so you can plug it into an older port and it will still work.
Check the link speed your Mac actually negotiates
Do not trust the label on the drive box. Plug the drive in with the cable you plan to use, then open System Information on the Mac and look under USB or Thunderbolt for the speed line. You can also read it from Terminal. Newer macOS releases sometimes rename the USB data type, so if the first command returns nothing, use the System Information app instead.
system_profiler SPUSBDataType
system_profiler SPThunderboltDataTypeLook for a speed line next to your drive that reads 10 Gb/s, 20 Gb/s or 40 Gb/s. If it shows 10, you have your answer. Cable quality matters here too. A cheap charging cable can drag a 40Gbps drive down to USB 2 speeds without any warning. Samsung ships a braided USB-C cable of roughly 16 inches with the P9, and Tom’s Hardware called it one of the nicest cables in its test drawer. Use it.
For a broader view of how the three interface families compare outside the Mac context, our guide to Thunderbolt 5 vs USB4 vs USB 3.2 portable SSDs lays out the speed tiers, and our SanDisk USB4 vs 20Gbps comparison shows how large the gap gets in practice.
Benchmarks From Three Sources
Rated speeds are marketing numbers. Independent testing tells you what a drive does under load. We pulled results from Tom’s Hardware, Dong Knows Tech and the Arekore guide, then set them next to the vendor ratings. None of these testers used a Mac as the main bench host, so treat the numbers as USB4 or 20Gbps behavior on a PC and expect results to vary on Apple hardware.
| Test | Source | Result |
|---|---|---|
| Vendor rating, P9 sequential read and write | Samsung | Up to 4,000 MB/s read, up to 3,800 MB/s write |
| CrystalDiskMark, default settings | Tom’s Hardware, Oct. 27, 2026 | P9 placed first in both reads and writes. SanDisk’s USB4 drive trailed by a few hundred MB/s on reads |
| DiskBench, 50GB set of 4,617 files | Tom’s Hardware | P9 led on writes. Its read speed landed fourth. SanDisk’s drive wrote at less than half the P9’s speed in this test |
| PCMark 10 Storage trace test | Tom’s Hardware | P9 finished behind LaCie’s Thunderbolt 5 and USB4 drives and SanDisk’s USB4 drive, but ahead of Corsair’s EX400U |
| Iometer 15-minute sustained sequential write, 2TB P9 | Tom’s Hardware | About 3,750 MB/s for roughly the first minute, then a range from just under 2,200 to just over 2,400 MB/s |
| Real-world copy of hundreds of GB over USB4 | Dong Knows Tech, Oct. 19, 2026 | Around 2,600 MB/s or faster, below Samsung’s claim, and the drive stayed cool to the touch |
| Interface tiers for T9 and X10 Pro | Arekore, Oct. 13, 2026 | Both rated around 2,000 MB/s class, with the 20Gbps port required to reach it |
The pattern across sources is consistent. Synthetic tests flatter the P9 and put it first. Trace-based tests that mimic everyday app activity rank it lower, behind drives from LaCie and SanDisk. Tom’s Hardware’s own summary of the P9 in its headline is “speedy USB4 in a slim, pricey package,” and the benchmark spread backs up all four words. Dong Knows Tech echoes the speed and the price: the review scores the P9 highest for performance and lowest for value.
Dong Knows Tech also cautions that USB storage carries large protocol overhead, so real sustained speeds sit well below theoretical rates on every drive. That is why its 2,600 MB/s figure should be read as strong, not disappointing. It is more than the T9’s rated 2,000 MB/s ceiling, which no drive on this list should be expected to hit in every transfer.
Sustained Writes and Heat: What Mac Video Editors Should Watch
Editors rarely care about the first ten seconds of a transfer. They care about what happens when a 400GB card dump keeps running. External SSDs use a fast write cache, a region of flash that behaves like SLC memory and soaks up incoming data. Once the cache fills, the drive falls back to its native flash speed. Tom’s Hardware runs a 15-minute Iometer sequential write to expose that behavior.
The P9’s cache behavior
Samsung has not disclosed the P9’s SLC cache size, whether it is fixed or dynamic, or whether it changes by capacity. Tom’s Hardware tested the 2TB model and noted that the 2TB drive might sit at a disadvantage against the 4TB LaCie and Crucial drives in its chart. Even so, the result was largely positive. The drive held close to its rated maximum for about a minute, then settled into a band between roughly 2,200 and 2,400 MB/s. For an editor, that second figure is the one to plan around. It is still faster than the T9’s rated peak.
Heat and power draw
Dong Knows Tech reported that the P9 stayed cool to the touch during operation and drew little power from the host. It also ran the drive off a Pixel 9 Pro XL for a few hours and saw no noticeable battery drain on the phone. On a MacBook running on battery, that low draw matters more than a few hundred MB/s. Samsung’s Magician software adds temperature and health monitoring, though Tom’s Hardware found the desktop interface oversized and clunky on a large display.
The takeaway for Mac editors is practical. A 2TB drive will not choke on a single clip, but a long offload will drop to the 2,200 to 2,400 MB/s band after about a minute. If your daily workflow moves 500GB or more at a time, capacity tier matters. Larger drives often carry bigger caches, though Samsung has not confirmed that for the P9, so ask for review data on the exact capacity you plan to buy.
Pricing: What Each Drive Costs on Oct. 29, 2026
Prices moved up this autumn and stock stayed thin. The table below lists only figures we could tie to official US pages or to Samsung and OWC’s own listings. Price per terabyte is our own arithmetic, rounded to the nearest dollar.
| Drive | Capacity | US price | Price per TB | Notes |
|---|---|---|---|---|
| Samsung P9 | 1TB | $339.99 | $340 | Samsung US listing, October 2026 |
| Samsung P9 | 2TB | $649.99 | $325 | Only capacity readily in stock on Oct. 27 per Tom’s Hardware |
| Samsung P9 | 4TB | $1,439.99 | $360 | Launch MSRP was $1,349.99 |
| Samsung P9 | 8TB | $2,879.99 | $360 | Launch MSRP was $2,699.99 |
| OWC Envoy Pro mini | 1TB | $249.99 | $250 | OWC promotion, Oct. 1, 2026 |
| OWC Envoy Pro mini | 2TB | $499.99 | $250 | OWC promotion, Oct. 1, 2026 |
The 4TB and 8TB P9 prices climbed after launch. Dong Knows Tech lists launch MSRPs of $1,349.99 and $2,699.99, while Samsung’s US pages now show $1,439.99 and $2,879.99. That is $90 and $180 more. Tom’s Hardware pegged the 2TB P9 at $649.99, which it called about $100 more than SanDisk’s USB4 rival and a bit less than some older USB4 options.
The other drives, with sources
We kept these figures out of the table because they come from reviews and retail trackers, not from each vendor’s official page. Use them as direction, and check live prices before you buy.
- Samsung T9: Samsung’s US pages reportedly showed $287.99 for 1TB on Oct. 28 and $489.99 for 2TB on Oct. 27. That works out to about $245 per terabyte at 2TB.
- Crucial X10 Pro: Tom’s Hardware listed the 2TB at $399, roughly $200 per terabyte. Other trackers have shown lower retail prices at times. Official Crucial prices were not confirmed.
- SanDisk Extreme PRO with USB4: Tom’s Hardware put the 2TB at $549.
- Corsair EX400U: the same review found the 2TB at $692 and increasingly hard to find in stock.
- LaCie Rugged SSD4: Tom’s Hardware found the 2TB between $750 and $800 where it was still available.
- OWC Envoy Pro FX: no official OWC price was confirmed. One marketplace listing showed a 4TB at $1,500 on Oct. 27, which is not a list price.
The gap math is easy to run. A 2TB P9 at $649.99 costs $160 more than a 2TB T9 at $489.99. Against the X10 Pro at $399, the P9 costs $250.99 more, for a rated read speed of up to 4,000 MB/s against 2,100 MB/s. Our portable NVMe SSD price tracker follows the same drives week to week if you want to time a purchase.
Does the premium pay off? Only if your Mac’s port can use it and your work needs it. A photographer who moves RAW files in 20GB batches will not notice 2,600 MB/s against 1,000 MB/s on a real day. A colorist who scrubs 8K proxies from the drive will.
Six Real-World Examples From Recent Testing
Spec tables answer what a drive can do. Recent reviews show what it did when someone used it. These six cases come from the Oct. 2026 coverage of the P9 and its rivals.
1. The 50GB mixed-file copy
Tom’s Hardware copies a 50GB dataset of 4,617 images, videos and ISO files to each drive. The P9 won the write portion. In the read portion it finished fourth, close to SanDisk’s USB4 drive. Whoever imports many small files into a Photos or Lightroom library will see this mixed behavior more than the headline sequential number.
2. The 15-minute write that outlasts the cache
On the same site’s sustained test, the 2TB P9 started near 3,750 MB/s and dropped to a 2,200 to 2,400 MB/s band. A long ProRes offload from a camera card lands in that second band, which still beats the T9’s top rating.
3. Hundreds of gigabytes in one go
Dong Knows Tech copied a few hundred gigabytes at a time for a couple of days on a 2TB P9. Performance stayed consistent through the large operations, and the drive remained cool. His verdict was that it suits intensive work such as video editing, as long as the computer supports USB 3.2 Gen 2×2, Thunderbolt 3 or later, or USB4.
4. The phone test that checks power draw
The same reviewer ran the P9 from a Pixel 9 Pro XL for a few hours and saw no noticeable hit to battery life. For Mac users who shoot on an iPhone and offload to a drive in the field, that points to a drive that sips power. Check your own phone before you rely on it, because we have no iPhone-specific data.
5. A Thunderbolt 5 drive that behaves differently on Apple hardware
Tom’s Hardware’s test set included LaCie’s Thunderbolt 5 drive, listed at $1,999 for the 4TB model. It beat the P9 in PCMark 10 but showed odd results in other tests on the site’s USB4 testbed. The reviewer noted that the LaCie drive can run faster on Apple hardware. If you own a Mac with Thunderbolt 5, a Thunderbolt drive may deserve a look. The OWC Envoy Ultra vs LaCie vs SanDisk breakdown covers that class.
6. The stock problem
Tom’s Hardware found LaCie’s Rugged SSD4 listed as sold out or unavailable in many places and Corsair’s EX400U getting hard to find. Only the 2TB P9 was readily available. A buyer shopping on a deadline should pick the drive that is in stock this week, not the one that tops a chart.
Drive-by-Drive Breakdown for Mac Owners
Samsung P9: the fastest, and the least forgiving of port limits
The P9 is slim at 0.3 inches, wrapped in metal and backed by a five-year warranty. It supports 256-bit hardware encryption and password protection through Samsung Magician. The drive ships preformatted as exFAT, so a Mac, a PC and an Android phone can all read it right away. The cons are real. The price is high, there is no dust or water rating, and the box has no USB-A cable or adapter. Our P9 vs P7 vs T9 explainer covers how the lower-tier P7 fits in.
Samsung T9: the proven 20Gbps default
The T9 launched in 2023, remains on sale and carries a 3-meter drop rating with a five-year warranty. It is thicker than the P9 at 0.55 inches, and its rubber coating attracts dust. It makes the most sense for a Mac that can negotiate 20Gbps and for buyers who want Samsung’s software and warranty at a lower price. If your Mac only gives you 10Gbps, you pay for headroom you cannot use.
Crucial X10 Pro: the value-per-terabyte pick
The X10 Pro carries 2,100 MB/s read and 2,000 MB/s write ratings, IP55 protection and 1TB, 2TB and 4TB capacities. Tom’s Hardware called the latest X10 very good for a 20Gbps drive while stressing that it sits in a different performance class from USB4. It is the cheapest per terabyte of the four. The same 10Gbps caveat applies on a Mac.
OWC Envoy Pro FX: the Thunderbolt holdout
The Envoy Pro FX remains the Thunderbolt-native option in this group. A 4TB listing on SpecPicks describes it as a Thunderbolt 40Gb/s plus USB-C 10Gb/s portable NVMe SSD. OWC’s own Oct. 1 promotion featured the Envoy Pro mini at $249.99 for 1TB and $499.99 for 2TB and left the FX off the list. We could not confirm current speeds, official prices or a successor, so buyers should check OWC directly before ordering.
Use-Case Recommendations: Six Mac Workflows
Every buyer asks for the best external SSD for Mac as if one answer fits all. It does not. These six workflows cover most of what Mac owners do with a portable drive, and each gets a pick based on the data above.
1. 4K and 8K editing from the drive
Pick the Samsung P9 in 2TB if your Mac has Thunderbolt or USB4 and you edit directly from the external volume. The sustained write band of 2,200 to 2,400 MB/s and the roughly 2,600 MB/s real-world copy speed leave room for multicam timelines. If the $650 price hurts, SanDisk’s USB4 drive costs about $100 less according to both Tom’s Hardware and Dong Knows Tech, with similar rated speeds but a larger, heavier body.
2. A Mac that only offers 10Gbps USB-C
Skip the premium tiers. A 20Gbps or 40Gbps drive will run at the port’s ceiling, and you pay for speed you never see. The Arekore guide points to a 10Gbps-class option such as SanDisk’s Extreme Portable V2, which it describes as IP65-rated with speeds around 1,050 MB/s. For most photo and light video work, that is plenty.
3. Time Machine and long-term backup
Backups reward capacity and price per terabyte, not burst speed. The Crucial X10 Pro at about $200 per terabyte and the Samsung T9 at about $245 per terabyte beat the P9’s $325 to $360 range by a wide margin. Format the drive as APFS if it will serve only Macs. For a comparison of solid-state against spinning disks for this job, see our external SSD vs external hard drive guide.
4. Field photography and travel
Durability takes priority here. The X10 Pro carries IP55 protection, the T9 survives drops from up to 3 meters, and the P9 has a 2-meter drop rating but no IP rating at all. If you shoot outdoors in poor weather, the X10 Pro or T9 is the safer choice. The P9 is the better pick for a desk-bound laptop bag.
5. A shared drive for Mac and Windows teammates
The P9 arrives preformatted as exFAT, which both operating systems read and write. That makes it a good hand-off drive between a Mac editor and a Windows colorist. Keep in mind that exFAT lacks the journaling APFS provides, so back up anything that matters before you pull the cable.
6. An older Thunderbolt 3 Mac in a studio
The OWC Envoy Pro FX is built for this host. It lists Thunderbolt and USB-C connections, and it has stayed in reseller catalogs through October. Its prices are murky and OWC did not feature it in its own Oct. 1 promotion, so call a retailer and confirm stock and warranty before you commit. The newer Envoy Pro mini at $249.99 for 1TB is the alternative in OWC’s catalog.
Migration Guide: Move Your Mac’s Data to a New Portable SSD
Swapping an old drive for a new one takes about an hour for a few hundred gigabytes. The steps below assume macOS and a drive you plan to use only with Macs. Skip step 3 and keep exFAT if you share the drive with Windows machines.
- Back up first. Copy anything irreplaceable to a second location before you touch either drive.
- Plug in the new drive with the cable in the box. Then confirm the link speed in System Information, as described earlier in this guide.
- Reformat if needed. Open Disk Utility, pick the drive itself rather than the volume, and choose APFS with a GUID Partition Map. The Terminal route is below. It erases everything on the target drive, so triple-check the disk identifier.
- Copy the data. Drag and drop works for small sets. For large folders, rsync restarts cleanly after an interruption.
- Verify the copy. A second rsync pass with checksums and the dry-run flag lists any file that differs.
- Test a real workload. Open a project from the new drive and scrub the timeline before you retire the old one.
- Keep the old drive for a week. Wipe it only after the new drive has handled your normal use.
diskutil list
diskutil eraseDisk APFS MacSSD GPT disk4
rsync -avh --progress /Volumes/OldDrive/ /Volumes/MacSSD/
rsync -avhn --checksum /Volumes/OldDrive/ /Volumes/MacSSD/Replace disk4 with the identifier that diskutil list shows for your new drive. The trailing slash after OldDrive matters, because it tells rsync to copy the folder’s contents instead of the folder itself. The last command lists nothing if the two volumes match.
A few migration notes apply to specific drives. The P9 and T9 both ship with Samsung Magician, which handles firmware updates and password protection, so install it before you load data. Encrypted volumes need their password stored somewhere safe, because a lost password on hardware encryption usually means a lost drive. If you boot or run apps from the external volume, treat it as a working disk and keep a backup of it too.
Pros and Cons of Each Drive
| Drive | Pros | Cons |
|---|---|---|
| Samsung P9 | Fastest rated speeds in the group, slim metal body, 256-bit hardware encryption, five-year warranty, capacities up to 8TB, preformatted exFAT | Priciest per terabyte, no IP rating, thin stock outside the 2TB model, no USB-A cable, bulky desktop software |
| Samsung T9 | Proven 20Gbps design, 3-meter drop rating, five-year warranty, lower price than the P9 | Thicker body, rubber coat collects dust, no longer Samsung’s fastest, no official IP rating |
| Crucial X10 Pro | Lowest cost per terabyte of the four, IP55 protection, 2,100 MB/s read rating | No USB4, official prices and warranty not confirmed in our sources, may run at 10Gbps on Mac ports |
| OWC Envoy Pro FX | Thunderbolt plus USB-C design suited to older Thunderbolt 3 Macs | Missing from OWC’s Oct. 1 promotion, murky pricing, no confirmed current specs, unclear successor plans |
Buying Mistakes Mac Owners Make With Portable SSDs
Most unhappy buyers did not pick a bad drive. They bought a good drive for the wrong port, or they trusted a price that expired. Five mistakes show up again and again.
- Paying for speed the port cannot carry. Check the negotiated link speed on your own Mac, not the box art.
- Using the wrong cable. A slow cable limits a fast drive. Use the cable that ships with the drive, or a certified 40Gbps cable.
- Ignoring format. exFAT shares well but lacks APFS features. APFS suits Mac-only use and Time Machine.
- Chasing stock-outs. Tom’s Hardware found only the 2TB P9 readily available and several rival USB4 drives scarce, so a drive on a spec sheet may not ship.
- Treating a drive as a backup. One external SSD is a single copy. Keep a second copy of critical work.
Some readers also ask whether they should skip the ready-made drive and build their own from an M.2 enclosure. It can save money when you already own a spare NVMe stick, and our DIY NVMe enclosure vs portable SSD comparison weighs the trade-offs. The catch on a Mac is thermals and cable quality, which factory-built drives handle for you.
Verdict: The Best External SSD for Mac in October 2026
The Samsung P9 is the fastest portable SSD in this comparison and the best external SSD for Mac owners whose machines carry Thunderbolt or USB4 ports and whose work demands speed. Its rated 4,000 MB/s read is 1.9 times the X10 Pro’s 2,100 MB/s and twice the T9’s 2,000 MB/s. Dong Knows Tech measured real copies near 2,600 MB/s, and Tom’s Hardware saw a sustained write band of 2,200 to 2,400 MB/s after the cache filled. Those are strong numbers.
The cost is also real. A 2TB P9 at $649.99 sits $160 above the 2TB T9 and about $251 above the 2TB X10 Pro at Tom’s Hardware’s $399 figure. If your Mac negotiates only 10Gbps, none of that premium returns anything. In that case buy on price and durability, not on peak speed.
- Best overall for fast Macs: Samsung P9 2TB, $649.99.
- Best value for 20Gbps-capable hosts: Crucial X10 Pro, about $200 per terabyte at 2TB per Tom’s Hardware.
- Best balanced Samsung option: T9, with the 3-meter drop rating and five-year warranty.
- Best for Thunderbolt 3 studios: OWC Envoy Pro FX, with the caveat that you should confirm current specs and stock.
- Best for 10Gbps-only Macs: a cheaper 10Gbps-class drive, per the Arekore guide.
The takeaway: buy for your port first and your workload second. Browse more picks in our hardware coverage when prices shift, because the P9 supply picture can change within weeks.
FAQ: External SSDs for Mac
What is the best external SSD for Mac in 2026?
For a Mac with Thunderbolt or USB4, the Samsung P9 is the fastest option, rated at up to 4,000 MB/s read. For value on 20Gbps-capable hosts, the Crucial X10 Pro and Samsung T9 cost far less per terabyte.
Will a USB4 drive work on a Mac with only USB 3 ports?
Yes. Dong Knows Tech notes the P9 is backward compatible with USB 3.2 Gen 2×2 down through USB 2.0. It will then run at the slower port’s ceiling, so you pay for speed you cannot use.
Is the Samsung P9 worth $649.99 for the 2TB model?
Tom’s Hardware called it expensive, and Dong Knows Tech scored it lowest on value. It is worth it only if your Mac supports USB4 or Thunderbolt and your work moves large files often.
Samsung T9 or Crucial X10 Pro for a Mac?
Both are 20Gbps-class drives rated near 2,000 MB/s. The T9 offers a 3-meter drop rating and a five-year warranty, while the X10 Pro carries IP55 protection and a lower per-terabyte price. Check that your Mac can negotiate 20Gbps before buying either.
Do I need Thunderbolt for a portable SSD?
No. USB4 drives such as the P9 work on USB4 and Thunderbolt hosts alike. Thunderbolt-native drives like the Envoy Pro FX matter mainly for older Thunderbolt 3 studio setups.
Which format should I use, APFS or exFAT?
Use APFS for Mac-only drives and Time Machine. Use exFAT when the drive moves between Mac and Windows. The P9 ships preformatted as exFAT.
Does the Samsung P9 have a dust or water rating?
Tom’s Hardware found no IP ratings in Samsung’s spec sheet. The drive carries a 2-meter drop rating. The Crucial X10 Pro lists IP55.
Did Samsung discontinue the T9?
No official source we found says so. Samsung’s US store still lists the 1TB and 2TB T9 alongside the P9 as of late October 2026.
