How to choose an external SSD.

Interface reality — your port decides everything

External SSD marketing talks about 40 Gbps and "blazing speeds." Your laptop, almost certainly, does not. Before you spend a cent, look at what port you actually have — that's the ceiling for everything that follows.

USB 3.2 Gen 2 at 1050 MB/s is faster than 99% of users will ever need. It loads a 50GB Lightroom catalogue in 50 seconds. It transfers a 10GB phone backup in 10. The only reason to chase USB4 is if you regularly move 100GB+ of video footage and your laptop has the port to match.

The cruel reality: a USB4 SSD plugged into a USB 3.2 Gen 2 port will run at USB 3.2 Gen 2 speeds. You bought the marketing, not the speed. Save the R1500 premium and put it into capacity instead.

Top picks at each tier

After moving tens of thousands of these through our Centurion warehouse, a handful of drives consistently win at each price point. The rest are spec-sheet noise.

The Samsung T7 line is the default winner because it nails the basics: aluminium shell, 1050 MB/s sustained, USB-C-to-A and USB-C-to-C cables in the box, 3-year warranty. The T9 is the same recipe with USB 3.2 Gen 2x2 speeds — only worth it if you actually have a 20 Gbps port.

The Crucial X9 Pro is the quiet sleeper. At R1800 for 1TB it's identical to the T7 in real-world transfer speed, with a slightly chunkier build. If Samsung is out of stock — which happens — grab the X9 Pro and don't look back.

Capacity sweet spots

In 2026, capacity matters more than speed for most workflows. Phone backups are bigger, raw photo files are heavier, games install at 100GB+, and "I'll just delete some old stuff" is the most expensive sentence in storage.

• 500GB — too small in 2026. A single modern phone backup eats half of it. Skip.
• 1TB — the entry floor. Right for travel, occasional photo/video offload, game backups. R1500-R2000.
• 2TB — the sweet spot. Lightroom catalogues, Premiere project files, multiple full phone backups. R2500-R3500.
• 4TB — video-editor territory. DaVinci Resolve scratch disks, 4K timeline assets, raw footage archive. R5500-R6500.
• 8TB — rare and pricey; usually beaten by two 4TB drives or a DIY enclosure path.

The doubling rule: going from 1TB to 2TB roughly doubles the price. Going from 2TB to 4TB more than doubles it. The cost-per-GB sweet spot in 2026 sits firmly at 2TB.

Security & ruggedness — when to pay the premium

Two add-ons get marketed hard: IP-rated rugged shells and built-in fingerprint readers. Both are worth paying for in specific scenarios and a waste of money in everything else.

IP rating — only if the drive leaves the office

The SanDisk Extreme V2 (IP55) and WD Black P50 (IP65 on the latest revisions) survive rain, dust and 2-metre drops. They're built for site engineers, photographers shooting in the bush, and laptop bags that get thrown around.

For a drive that lives between your desk and a laptop sleeve, the rugged premium is dead money. Samsung T7 and Crucial X9 Pro will survive any normal carry — the IP rating only earns its R500-R700 premium when you actually use the drive outdoors.

Fingerprint security — for drives that leave home

The Samsung T7 Touch (~R2300 / 1TB) adds a fingerprint reader to the regular T7's AES 256-bit hardware encryption. A lost or stolen drive is genuinely unrecoverable without an enrolled print — no PIN bypass, no recovery key in plain text.

The cable that matches the drive — the rule everyone misses

The single most common cause of "my expensive SSD feels slow" complaints we get isn't the SSD. It's the cable. Most generic USB-C cables — including the ones bundled with phones and chargers — are USB 2.0 only and cap at roughly 60 MB/s no matter what's plugged in.

The rule: use the cable that came in the box with the SSD. It's specifically rated for that drive's speed. If you've lost it, replace with a cable explicitly marked USB 3.2 Gen 2 or 10 Gbps — not "USB-C" or "charge and sync."

Why this matters in Rands: a R2500 SSD on a generic R80 cable runs at 5% of its rated speed. You bought a 1050 MB/s drive and you're getting 60. Always check the printed spec on the cable jacket — if it just says "USB 2.0" or has no spec at all, replace it.

DIY M.2 NVMe enclosure — when it beats branded

If you're comfortable opening a small aluminium enclosure and slotting a stick of NVMe into it, the DIY path is the quiet winner on cost-per-GB for 2TB+ drives.

When DIY wins: 2TB+ capacity, you want a faster interface (20 Gbps / USB4) without paying the branded premium, you already have a spare NVMe drive lying around, or you want to upgrade capacity later (just swap the stick).

When branded wins: you want a drive in a courier bag tomorrow, IP-rated ruggedness, fingerprint security, warranty as a single unit, or you simply don't want to think about it.

Recommended drives by use case

Key takeaways

1. Samsung T7 2TB (~R2500) is the right pick for 95% of buyers — USB 3.2 Gen 2, pocketable, 3-year warranty.
2. Your laptop's port is the bottleneck. USB4 drives on Gen 2 ports run at Gen 2 speeds — wasted money.
3. 2TB is the cost-per-GB sweet spot. 1TB for travel; 4TB only for active video editors.
4. Use the cable that came in the box. Generic USB-C cables cap at 60 MB/s and ruin benchmarks.
5. DIY M.2 enclosure beats branded on cost at 2TB+; branded wins on ruggedness, security and warranty simplicity.

Frequently asked questions

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