External SSD vs External HDD: Which Should You Buy?
External SSDs are faster and more durable. External HDDs are cheaper per GB. Here's when each makes sense.
The core tradeoff
External SSDs are fast (up to 2,000 MB/s via USB 3.2 Gen 2×2), small, silent, and shock-resistant. External HDDs are slow (120–160 MB/s), but they offer far more storage per dollar — 4 TB of external HDD costs about the same as 1 TB of external SSD.
Choose based on what you are storing and how you use it.
When external SSD is the right pick
- Running applications or games from the drive — SSD speeds make this viable; HDD stutters
- Photo and video editing from external storage — sustained read/write makes SSD essential
- Carrying it in a bag or pocket — SSDs have no moving parts and survive drops
- Fast backups or transfers you do daily — 2,000 MB/s vs 120 MB/s is a 15× speed difference
- Mac users with Thunderbolt — Thunderbolt 4 SSDs can reach 3,000+ MB/s
When external HDD is the right pick
- Archiving large media libraries — photos, videos, movies you access occasionally
- Time Machine or incremental backups — backup speed matters less than capacity
- 4+ TB storage on a budget — 4 TB HDD under $100 vs 4 TB SSD at $300+
- Stays on a desk and doesn't travel — no need for shock resistance
Speed comparison
| Drive Type | Speed | Typical Price (1 TB) | Shock Resistant |
|---|---|---|---|
| External HDD (USB 3.0) | 120–160 MB/s | $45–$60 | No |
| External SSD (USB 3.2 Gen 1) | 500–540 MB/s | $70–$90 | Yes |
| External SSD (USB 3.2 Gen 2) | 1,000–2,000 MB/s | $90–$130 | Yes |
The sweet spot: two drives
Many users benefit from both: an external SSD for active projects and fast transfers, and a large external HDD for archiving completed work. A 1 TB SSD + 4 TB HDD runs about $200 total and covers both use cases.
What to look for in an external SSD
- USB 3.2 Gen 2 — minimum for real-world fast transfers. Gen 1 is only 500 MB/s.
- Bus-powered — should not need a separate power brick
- IP rating — IP55 or higher if it travels in a bag regularly
- Genuine flash inside — Samsung T7, SanDisk Extreme, and WD My Passport use name-brand flash; cheap drives may use QLC or SMR that degrades quickly
Compare external drives →
External SSDs and HDDs ranked by speed, capacity, and price-per-GB.