Buying Guide

The Best SSD for Mac

Five external drives compared, from the SSK 500GB to the T7 2TB, with the trade-offs of each named.

By The PC Journal editorial team

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

Our 5 recommendations at a glance. Tap a pick for the full verdict.

  1. Lowest Price Here

    SSK Portable SSD 500GB

    Undercutting the GARMESE on price when we checked.

    Best for: Keeping the budget tight.

    Our take Check price for SSK Portable SSD 500GB (opens in a new tab)

  2. Fastest Rated Read Speed

    GARMESE 1TB External SSD

    The fastest rated read speed here (2,000MB/s).

    Best for: Buyers who put rated read speed first.

    Our take Check price for GARMESE 1TB External SSD (opens in a new tab)

  3. Also Consider

    Samsung T7 Shield Portable SSD 1TB

    An IP65 water and dust rating.

    Best for: Buyers who want IP65 water and dust rating.

    Our take Check price for Samsung T7 Shield Portable SSD 1TB (opens in a new tab)

  4. Strong Alternative

    SanDisk Extreme Portable SSD 2TB (1050MB/s)

    An IP65 water and dust rating.

    Best for: Buyers who want IP65 water and dust rating.

    Our take Check price for SanDisk Extreme Portable SSD 2TB (1050MB/s) (opens in a new tab)

  5. Premium Pick

    Samsung T7 Portable SSD 2TB

    An aluminum unibody at the highest price in the group.

    Best for: Buyers for whom price is not the deciding factor.

    Our take Check price for Samsung T7 Portable SSD 2TB (opens in a new tab)

Our Picks

SSK Portable SSD 500GB

Lowest Price Here1 of 5

SSK Portable SSD 500GB on Amazon (opens in a new tab)

SSK's 500GB SSD ships with both USB-C and USB-A cables and offers 1,050MB/s reads.

Best for

Keeping the budget tight.

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. Its 0.5TB capacity is the smallest in this group; the SanDisk Extreme 2TB leads at 2TB. It matches the T7 Shield, the SanDisk Extreme 2TB and the T7 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 dimensions & 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)
GARMESE 1TB External SSD

Fastest Rated Read Speed2 of 5

GARMESE 1TB External SSD on Amazon (opens in a new tab)

GARMESE's SSD offers 2,000MB/s reads in a 33g body with a keychain hole.

Best for

Buyers who put rated read speed first.

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.

On capacity it ties with the T7 Shield at 1TB. On rated read speed it leads this guide at 2,000MB/s, ahead of the SSK 500GB (1,050MB/s). A shock resistant durability claim is unique to it among these picks, while the T7 2TB uses a drops up to 6ft durability claim.

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 dimensions & 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
Samsung T7 Shield Portable SSD 1TB

Also Consider3 of 5

Samsung T7 Shield Portable SSD 1TB on Amazon (opens in a new tab)

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, the SanDisk Extreme 2TB and the T7 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 dimensions & 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
SanDisk Extreme Portable SSD 2TB (1050MB/s)

Strong Alternative4 of 5

SanDisk Extreme Portable SSD 2TB (1050MB/s) on Amazon (opens in a new tab)

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

Price-first buyers should look at the SSK 500GB, which cost less when we checked.

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 T7 2TB on capacity (2TB). It matches the SSK 500GB, the T7 Shield and the T7 2TB 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 T7 2TB, at the time of writing.

Key dimensions & 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

  • Costs more than the SSK 500GB at the time of writing
Samsung T7 Portable SSD 2TB

Premium Pick5 of 5

Samsung T7 Portable SSD 2TB on Amazon (opens in a new tab)

The 2TB T7 keeps the same aluminum body and 1,050MB/s rating as the 1TB model.

Best for

Buyers for whom price is not the deciding factor.

Skip if

Skip it if rated read speed matters most to you; the GARMESE offers 2,000MB/s.

Why we like it

The extra space suits a larger game library. It matches the SanDisk Extreme 2TB on capacity (2TB). It matches the SSK 500GB, the T7 Shield and the SanDisk Extreme 2TB on rated read speed (1,050MB/s).

No other pick in this guide offers a drops up to 6ft durability claim; compare the GARMESE, which has a shock resistant durability claim. It also offers PCIe NVMe inside and drop protection up to 6ft. It was the highest-priced of the 5 picks at the time of writing, so the case for it rests on what it adds over the SanDisk Extreme 2TB and the rest. The trade-off is rated read speed; for more, the GARMESE offers 2,000MB/s.

Key dimensions & specs

  • Drive type: SSD
  • Capacity (as reviewed): 2TB
  • Max read speed: 1,050MB/s
  • Connection: USB 3.2 Gen 2 (USB-C)
  • Durability claim: Drops up to 6ft
  • Security: None stated

Pros

  • Aluminum unibody
  • PCIe NVMe inside
  • Drop protection up to 6ft
  • Capacity of 2TB, ahead of the GARMESE

Cons

  • Rated read speed trails the GARMESE (2,000MB/s)
  • Costs more than the SSK 500GB at the time of writing

How We Chose

Each pick was assessed across 4 criteria weighted for real-world use.

Drive type and speed
We recorded whether each drive is an SSD or hard drive and its read speed.
Durability
We noted listed drop, water and dust claims.
Security and extras
We checked for password protection, encryption and backup software.
Connection
We checked the USB standard and connector each maker names.

What to Look for in an SSD for Mac

Key buying criteria so you get the right fit the first time.

  1. Decide on rated read speed first

    Among these picks, rated read speed runs from 1,050MB/s on the T7 2TB to 2,000MB/s on the GARMESE. Match this to what you will actually do with it, then let price decide between the picks that qualify.

  2. SSD or hard drive

    A portable hard drive gives the most terabytes per dollar and suits backups. A portable SSD is several times faster, lighter and more tolerant of drops, which suits working files and games.

  3. Size for what you store

    1TB suits documents and a few games. 2TB or more suits photo libraries, video and large game libraries. Hard drives reach larger sizes for the money.

  4. Drop and water ratings

    IP ratings and drop heights are manufacturer claims. They matter for drives that travel in bags; a drive that stays on a desk needs less.

  5. Mac and Windows formatting

    Many drives ship formatted for Windows. On a Mac, reformat to APFS for Time Machine, or exFAT to share the drive with a Windows PC.

How to Choose an SSD for Mac

By priority

PriorityConsiderWhy
Keeping the budget tightSSK 500GBUndercutting the GARMESE on price when we checked
Buyers who put rated read speed firstGARMESEThe fastest rated read speed here (2,000MB/s)
Buyers who want IP65 water and dust ratingT7 ShieldAn IP65 water and dust rating
Buyers who want IP65 water and dust ratingSanDisk Extreme 2TBAn IP65 water and dust rating
Buyers for whom price is not the deciding factorT7 2TBAn aluminum unibody at the highest price in the group

Scroll sideways to see every column.

Key specs side by side

Figures as each maker states them.

DriveDrive typeCapacity (as reviewed)Max read speedConnection
SSK 500GBSSD0.5TB1,050MB/sUSB 3.2 Gen 2 (USB-C and USB-A cables)
GARMESESSD1TB2,000MB/sUSB 3.2 Gen 2x2 (USB-C, USB-A adapter)
T7 ShieldSSD1TB1,050MB/sUSB 3.2 Gen 2 (USB-C)
SanDisk Extreme 2TBSSD2TB1,050MB/sUSB 3.2 Gen 2 (USB-C)
T7 2TBSSD2TB1,050MB/sUSB 3.2 Gen 2 (USB-C)

Scroll sideways to see every column.

By price at the time of writing

Prices change often; these tiers reflect Amazon prices when this guide was updated.

Price tierDrives
About $50 to $100SSK 500GB
About $150 to $250GARMESE
About $250 to $500T7 Shield, SanDisk Extreme 2TB, T7 2TB

Frequently Asked Questions

Which of these external drives has the largest capacity?

The SanDisk Extreme 2TB leads at 2TB, ahead of the T7 2TB at 2TB; the SSK 500GB sits at the other end with 0.5TB.

What is the least I can spend on one of these external drives?

Start with the SSK 500GB, the lowest-priced pick when we checked. The T7 2TB is the premium end, so the spread between them shows what extra money buys here.

How long do portable drives last?

It depends on use and handling. Check the warranty length as a signal of the maker's confidence, and replace a drive that reports errors.

Is a portable SSD good for backups?

It works, but a hard drive gives more capacity per dollar for backups. Keep a second copy somewhere else for anything irreplaceable.

Can I run PC games from an external SSD?

Yes. Launchers such as Steam can add a library folder on an external drive. Load times depend on the drive and port; an SSD on a 10Gbps port is far quicker than a hard drive.

Bottom Line

Our first pick is the SSK 500GB, chosen for undercutting the GARMESE on price when we checked. Look at the GARMESE for the fastest rated read speed here (2,000MB/s), 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.