Buying Guide
The Best SSD for Mac
Five external drives compared, from the SSK 500GB to the X10 Pro 2TB, with the trade-offs of each named.
By Alex Morgan, PC Hardware Editor
12 min read5 products evaluated

Most Macs cannot take a new internal SSD, so an external USB-C SSD is the practical upgrade. Every pick is a USB-C SSD.
We sorted these picks by drive type, capacity (as reviewed) and max read speed, working from the makers' own data; any figure a maker omits is noted as missing, and no figure here comes from our own testing.
Quick Picks
Which of the 5 picks to look at first. Tap a name for the full analysis.

Lowest Price Here
SSK Portable SSD 500GBUndercutting the GARMESE on price when we checked.
Best for: Keeping the cost under $100.
Check price for SSK Portable SSD 500GB on Amazon (opens in a new tab)
Also Consider
GARMESE 1TB External SSDA 33g body with a keychain hole.
Best for: Buyers who want 33g body with a keychain hole.
Check price for GARMESE 1TB External SSD on Amazon (opens in a new tab)
Strong Alternative
Samsung T7 Shield Portable SSD 1TBAn IP65 water and dust rating.
Best for: Buyers who want IP65 water and dust rating.
Check price for Samsung T7 Shield Portable SSD 1TB on Amazon (opens in a new tab)
Worth a Look
SanDisk Extreme Portable SSD 2TB (1050MB/s)An IP65 water and dust rating.
Best for: Buyers who want IP65 water and dust rating.
Check price for SanDisk Extreme Portable SSD 2TB (1050MB/s) on Amazon (opens in a new tab)
Fastest Rated Read Speed
Crucial X10 Pro Portable SSD 2TBThe fastest rated read speed here (2,100MB/s).
Best for: Buyers who put rated read speed first.
Check price for Crucial X10 Pro Portable SSD 2TB on Amazon (opens in a new tab)
Our Picks
Lowest Price Here1 of 5
SSK Portable SSD 500GB
SSK's 500GB SSD ships with both USB-C and USB-A cables and offers 1,050MB/s reads.
Best for
- Keeping the cost under $100.
Skip if
- Skip it if capacity matters most to you; the SanDisk Extreme 2TB offers 2TB.
Why we like it
It is the cheapest SSD here. It reads at up to 1,050MB/s over a 10Gbps USB-C link, fast enough for moving large project folders. Expect about 465GB to show in Windows, which is normal for a 500GB drive.
SLC caching keeps large transfers fast, and S.M.A.R.T. and TRIM support help it last. It reads at up to 1050MB/s and writes at up to 1000MB/s over 10Gbps USB. S.M.A.R.T. health reporting and TRIM help keep write speeds consistent over time.
Its 0.5TB capacity is the smallest in this group; the SanDisk Extreme 2TB leads at 2TB. It matches the T7 Shield and the SanDisk Extreme 2TB on rated read speed (1,050MB/s). It also offers an activity LED and an SLC cache for steady transfers. It was the cheapest of the group when we checked; the GARMESE was the next step up.
Key specs
- Drive type
- SSD
- Capacity (as reviewed)
- 0.5TB
- Max read speed
- 1,050MB/s
- Connection
- USB 3.2 Gen 2 (USB-C and USB-A cables)
- Durability claim
- Not stated
- Security
- None stated
Pros
- Both USB-C and USB-A cables
- Activity LED
- SLC cache for steady transfers
- Undercutting the GARMESE on price when we checked
Cons
- Capacity trails the SanDisk Extreme 2TB (2TB)
The catch
If capacity is your priority, the SanDisk Extreme 2TB (2TB) is the stronger choice.
Also Consider2 of 5
GARMESE 1TB External SSD
GARMESE's SSD offers 2,000MB/s reads in a 33g body with a keychain hole.
Best for
- Buyers who want 33g body with a keychain hole.
Skip if
- Price-first buyers should look at the SSK 500GB, which cost less when we checked.
Why we like it
A USB-A adapter is included. It reads at up to 2,000MB/s over USB 3.2 Gen 2x2, which is twice a standard 10Gbps drive. Full speed needs a 20Gbps port.
It uses USB 3.2 Gen 2x2 for reads up to 2000MB/s and writes up to 1800MB/s, which needs a 20Gbps port. On capacity it ties with the T7 Shield at 1TB. On rated read speed it sits mid-pack at 2,000MB/s: the X10 Pro 2TB offers 2,100MB/s, and the SanDisk Extreme 2TB comes in at 1,050MB/s.
It also offers 1,800MB/s rated writes. Its top speed needs a USB 3.2 Gen 2x2 (20Gbps) port; most laptops and all Macs run it at 10Gbps speeds instead. It was priced above the SSK 500GB and below the T7 Shield at the time of writing.
Key specs
- Drive type
- SSD
- Capacity (as reviewed)
- 1TB
- Max read speed
- 2,000MB/s
- Connection
- USB 3.2 Gen 2x2 (USB-C, USB-A adapter)
- Durability claim
- Shock resistant
- Security
- None stated
Pros
- rated reads up to 2,000MB/s
- 33g body with a keychain hole
- 1,800MB/s rated writes
- Included USB-A adapter
Cons
- Costs more than the SSK 500GB at the time of writing
Strong Alternative3 of 5
Samsung T7 Shield Portable SSD 1TB
The T7 Shield adds an IP65 rubber shell and 9.8ft drop protection to Samsung's T7.
Best for
- Buyers who want IP65 water and dust rating.
Skip if
- Price-first buyers should look at the SSK 500GB, which cost less when we checked.
Why we like it
Speed stays at 1,050MB/s. Its rubber shell is rated for water, dust and drops, and it transfers over USB 3.2 Gen 2. It works with PC, Mac and consoles.
It reads at up to 1,050MB/s over PCIe NVMe, and it is rated IP65 for water and dust. Samsung makes its own controller, DRAM and NAND for the T7 Shield, and it is sold in 1TB to 4TB capacities. It matches the GARMESE on capacity (1TB).
It matches the SSK 500GB and the SanDisk Extreme 2TB on rated read speed (1,050MB/s). On price it sat third of 5, between the cheaper GARMESE and the pricier SanDisk Extreme 2TB, at the time of writing.
Key specs
- Drive type
- SSD
- Capacity (as reviewed)
- 1TB
- Max read speed
- 1,050MB/s
- Connection
- USB 3.2 Gen 2 (USB-C)
- Durability claim
- IP65, drops up to 9.8ft
- Security
- None stated
Pros
- IP65 water and dust rating
- Drop protection up to 9.8ft
- Compatibility with PC, Mac, Android and consoles
- Capacity of 1TB, ahead of the SSK 500GB
Cons
- Costs more than the SSK 500GB at the time of writing
Worth a Look4 of 5
SanDisk Extreme Portable SSD 2TB (1050MB/s)
The earlier SanDisk Extreme offers 1,050MB/s reads, an IP65 rating and 3m drop protection.
Best for
- Buyers who want IP65 water and dust rating.
Skip if
- Skip it if rated read speed matters most to you; the X10 Pro 2TB offers 2,100MB/s.
Why we like it
The 2TB size suits games and video. SanDisk rates it for 3-metre drops and IP65 water and dust resistance, up from the earlier 2-metre and IP55 ratings. A carabiner loop lets you clip it to a bag.
Password protection uses 256-bit AES hardware encryption, and the Memory Zone app helps manage files. It matches the X10 Pro 2TB on capacity (2TB). It matches the SSK 500GB and the T7 Shield on rated read speed (1,050MB/s).
You also get NVMe performance in a small body. On price it sat fourth of 5, between the cheaper T7 Shield and the pricier X10 Pro 2TB, at the time of writing. The trade-off is rated read speed; for more, the X10 Pro 2TB offers 2,100MB/s.
Key specs
- Drive type
- SSD
- Capacity (as reviewed)
- 2TB
- Max read speed
- 1,050MB/s
- Connection
- USB 3.2 Gen 2 (USB-C)
- Durability claim
- IP65, drops up to 3m
- Security
- None stated
Pros
- IP65 water and dust rating
- Drop protection up to 3m
- NVMe performance in a small body
- Capacity of 2TB, ahead of the GARMESE
Cons
- Rated read speed trails the X10 Pro 2TB (2,100MB/s)
- Costs more than the SSK 500GB at the time of writing
Fastest Rated Read Speed5 of 5
Crucial X10 Pro Portable SSD 2TB
Crucial's X10 Pro offers 2,100MB/s reads and 2,000MB/s writes, so large exports copy back nearly as fast as they read.
Best for
- Buyers who put rated read speed first.
Skip if
- If budget leads, the SSK 500GB was cheaper at our last price check.
Why we like it
It adds IP55 water and dust resistance, a 7.5ft drop rating and password protection built into the drive. It reads at up to 2,100MB/s and is rated IP55 with 7.5-foot drop resistance. Full speed needs a 20Gbps USB port.
On capacity it ties with the SanDisk Extreme 2TB at 2TB. Nothing else here matches its 2,100MB/s rated read speed; the GARMESE comes closest at 2,000MB/s. An SSD password protection security is unique to it among these picks, while the GARMESE uses a none stated security.
It also comes with a lanyard loop and activity light and three months of Mylio Photos+ and Acronis True Image. Only the SanDisk Extreme 2TB came close to it on price at the time of writing; it cost the most of the 5 picks.
Key specs
- Drive type
- SSD
- Capacity (as reviewed)
- 2TB
- Max read speed
- 2,100MB/s
- Connection
- USB 3.2 (USB-C, USB-A supported)
- Durability claim
- IP55, drops up to 7.5ft
- Security
- SSD password protection
Pros
- rated reads up to 2,100MB/s
- 2,000MB/s rated writes
- Lanyard loop and activity light
- Three months of Mylio Photos+ and Acronis True Image
Cons
- Costs more than the SSK 500GB at the time of writing
How We Chose
Alex Morgan compared the manufacturer specifications, connectivity, warranty terms and compatibility of every pick. Figures come from the makers unless a third-party source is named; we did not test these products ourselves.
- The figures behind the order
- We lined up five drives on drive type, capacity, rated read speed and connection, using each maker's published specs. These are research figures, not bench results: 1 of 5 picks leave out durability claim.
- The shared baseline
- All 5, from the SSK 500GB to the X10 Pro 2TB, state drive type, capacity and rated read speed.
- Where the specs have gaps
- The SSK 500GB gives no durability claim.
- Price range
- At our last check the picks ran from the SSK 500GB ($50 to $100) to the X10 Pro 2TB ($250 to $500).
What to Look for in an SSD for Mac
Key buying criteria so you get the right fit the first time.
Capacity across these picks
Here capacity runs from 0.5TB on the SSK 500GB to 2TB on the SanDisk Extreme 2TB, a 300% spread. Start with the SanDisk Extreme 2TB if capacity decides it.
Rated read speed
The X10 Pro 2TB tops rated read speed at 2,100MB/s and the SanDisk Extreme 2TB sits lowest at 1,050MB/s. The GARMESE comes second at 2,000MB/s, in the $150 to $250 tier against $250 to $500 for the X10 Pro 2TB.
Features beyond the spec table
The T7 Shield: drop protection up to 9.8ft. The SanDisk Extreme 2TB: drop protection up to 3m. The X10 Pro 2TB: a lanyard loop and activity light.
Where your budget lands
$50 to $100 buys the SSK 500GB; $150 to $250 buys the GARMESE; $250 to $500 buys the T7 Shield, the SanDisk Extreme 2TB and the X10 Pro 2TB at our last check.
Match the pick to your priority
Keeping the cost under $100: the SSK 500GB. Buyers who put rated read speed first: the X10 Pro 2TB.
How to Choose an SSD for Mac
By priority
| Priority | Consider | Why |
|---|---|---|
| Keeping the cost under $100 | SSK 500GB | Undercutting the GARMESE on price when we checked |
| Buyers who want 33g body with a keychain hole | GARMESE | A 33g body with a keychain hole |
| Buyers who want IP65 water and dust rating | T7 Shield | An IP65 water and dust rating |
| Buyers who want IP65 water and dust rating | SanDisk Extreme 2TB | An IP65 water and dust rating |
| Buyers who put rated read speed first | X10 Pro 2TB | The fastest rated read speed here (2,100MB/s) |
Scroll sideways to see every column.
Key specs side by side
The SanDisk Extreme 2TB leads on capacity at 2TB, ahead of the X10 Pro 2TB at 2TB.
| Drive | Drive type | Capacity (as reviewed) | Max read speed | Connection |
|---|---|---|---|---|
| SSK 500GB | SSD | 0.5TB | 1,050MB/s | USB 3.2 Gen 2 (USB-C and USB-A cables) |
| GARMESE | SSD | 1TB | 2,000MB/s | USB 3.2 Gen 2x2 (USB-C, USB-A adapter) |
| T7 Shield | SSD | 1TB | 1,050MB/s | USB 3.2 Gen 2 (USB-C) |
| SanDisk Extreme 2TB | SSD | 2TB | 1,050MB/s | USB 3.2 Gen 2 (USB-C) |
| X10 Pro 2TB | SSD | 2TB | 2,100MB/s | USB 3.2 (USB-C, USB-A supported) |
Scroll sideways to see every column.
By price at the time of writing
At our last check the cheapest pick, the SSK 500GB, sat in the $50 to $100 tier, 3 tiers in all up to the X10 Pro 2TB at $250 to $500; Amazon prices move, so recheck before buying.
| Price tier | Drives |
|---|---|
| About $50 to $100 | SSK 500GB |
| About $150 to $250 | GARMESE |
| About $250 to $500 | T7 Shield, SanDisk Extreme 2TB, X10 Pro 2TB |
Frequently Asked Questions
Is the X10 Pro 2TB ahead of the GARMESE on rated read speed?
The X10 Pro 2TB leads at 2,100MB/s, with the GARMESE at 2,000MB/s. The spread runs down to the SanDisk Extreme 2TB at 1,050MB/s.
Is the X10 Pro 2TB worth paying more than the SSK 500GB?
On paper it adds capacity (2TB against 0.5TB) and rated read speed (2,100MB/s against 1,050MB/s). The SSK 500GB sat in the $50 to $100 tier and the X10 Pro 2TB in the $250 to $500 tier when we checked, with 3 other picks between them; pay the difference only if capacity and rated read speed decide your purchase.
What makes the X10 Pro 2TB the Fastest Rated Read Speed?
The label rests on the fastest rated read speed here (2,100MB/s). The GARMESE is next on rated read speed at 2,000MB/s, so this pick's 2,100MB/s is 5% further out. The SSK 500GB, the cheapest pick, sat in the $50 to $100 tier against $250 to $500 here, without out-ranking it on any listed spec. It is aimed at anyone who puts rated read speed first.
Do the SSK 500GB and the X10 Pro 2TB differ on security?
The SSK 500GB, the GARMESE, the T7 Shield and the SanDisk Extreme 2TB use None stated; the X10 Pro 2TB uses SSD password protection.
Beyond the specs, what sets the SSK 500GB and the GARMESE apart?
The SSK 500GB: both USB-C and USB-A cables. The GARMESE: a 33g body with a keychain hole. The T7 Shield: an IP65 water and dust rating.
Bottom Line
Our first pick is the SSK 500GB, chosen for undercutting the GARMESE on price when we checked. Look at the GARMESE for a 33g body with a keychain hole, the T7 Shield for an IP65 water and dust rating and the SanDisk Extreme 2TB for an IP65 water and dust rating if those matter more to you.
Keep large libraries on the external drive and the system on the internal one.
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About the author
PC Hardware Editor
Alex covers PC hardware, monitors, components, upgrades and peripherals for The PC Journal, with a focus on helping readers understand specifications, compatibility and meaningful product trade-offs.
Covers: Monitors, Graphics cards, Processors, PC components, Peripherals, Upgrades and compatibility
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