SanDisk
SanDisk Extreme PRO Portable SSD V2
$217
Released 2020-09
Best Portable Ssds · head-to-head
SanDisk Extreme PRO Portable SSD V2 vs SK Hynix Beetle X31 Portable SSD
A sourced, side-by-side comparison. SK Hynix Beetle X31 Portable SSD is cheaper at $60. Every spec and price links to its source.
SK Hynix
SK Hynix Beetle X31 Portable SSD
$60Cheaper
Released 2022
Which is better: the SanDisk Extreme PRO Portable SSD V2 or SK Hynix Beetle X31 Portable SSD?
The SanDisk Extreme PRO Portable SSD V2 wins 3 of the 3 specs we compare head to head; the other wins 0. The SK Hynix Beetle X31 Portable SSD is the cheaper at $60. Get the SanDisk Extreme PRO Portable SSD V2 for the stronger spec sheet, the SK Hynix Beetle X31 Portable SSD to spend less.
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Key specs, head to head
The numbers that decide it, drawn to scale — longer bar wins, the accent bar is the stronger figure.
Full spec sheet
✓ marks the stronger figure where "more" — or "less", for price and weight — is unambiguously better.
| Spec | SanDisk Extreme PRO Portable SSD V2 | SK Hynix Beetle X31 Portable SSD |
|---|---|---|
| US price | $217 | $60 |
| Brand | SanDisk | SK Hynix |
| Released | 2020-09 | 2022 |
| Capacity (GB) | 1000 | 512 |
| Read (Mbps) | 2000 | 1050 |
| Write (Mbps) | 2000 | 1000 |
| Interface | USB 3.2 Gen 2x2 (20 Gbps) | USB 3.2 Gen 2 (10 Gbps) |
| Encryption | AES 256-bit hardware | — |
| IP rating | IP55 | — |
| Weight (g) | — | 53 |
| Release | 2020-09 | 2022 |
Sources — SanDisk Extreme PRO Portable SSD V2: storagereview.com (verified 2026-06-15). SK Hynix Beetle X31 Portable SSD: ssd.skhynix.com (verified 2026-06-15).
What's the difference between the SanDisk Extreme PRO Portable SSD V2 and SK Hynix Beetle X31 Portable SSD?
Where the two actually differ on the specs we track (4 of 7). Matching specs are omitted.
- Capacity (GB): SanDisk Extreme PRO Portable SSD V2 1000 vs SK Hynix Beetle X31 Portable SSD 512
- Read (Mbps): SanDisk Extreme PRO Portable SSD V2 2000 vs SK Hynix Beetle X31 Portable SSD 1050
- Write (Mbps): SanDisk Extreme PRO Portable SSD V2 2000 vs SK Hynix Beetle X31 Portable SSD 1000
- Interface: SanDisk Extreme PRO Portable SSD V2 USB 3.2 Gen 2x2 (20 Gbps) vs SK Hynix Beetle X31 Portable SSD USB 3.2 Gen 2 (10 Gbps)
What reviewers say
Sourced tester consensus for each — the "what people who used it think" layer, not just specs.
SanDisk Extreme PRO Portable SSD V2
One whitelisted tester (StorageReview, Sept 2020) lab-benchmarked the 2TB Extreme Pro Portable SSD V2. Verdict: a fast, rugged (IP55), AES-256 hardware-encrypted USB 3.2 Gen 2x2 drive that nears its 2GB/s claim under heavy 4-thread load but falls short in lighter Blackmagic/single-thread tests. The Tom's Hardware source was dropped because fetch-clean returned only its page-1 spec sheet, so none of its quotes or measured performance/thermal values could be verified. (1 sourced review, 1 lab-tested.)
Praised: Strong sequential and 4K random write performance, near 2GB/s under 4-thread load; Rugged IP55 design plus 256-bit AES hardware encryption.
Flagged: Fell short of the quoted 2GB/s in lighter Blackmagic and single-thread tests (1.56GB/s read).
SK Hynix Beetle X31 Portable SSD
Solid but not class-leading. Three testers benchmarked it hands-on — PCWorld (July 2023) and StorageReview (February 2024) on 1TB, Tom's Hardware (December 2024) on 2TB. All three measured sequential throughput at or near the practical ~1,000 MB/s ceiling of the 10 Gbps interface, and all three note the compact rounded shell with non-slip feet. The two outlets that ran long continuous writes both hit a cache cliff. Pricing is contested rather than agreed: two outlets call it expensive, one calls it market-rate. (3 sourced reviews, 3 lab-tested.)
Praised: Sequential throughput lands at or near the ~1,000 MB/s practical ceiling of the 10 Gbps interface; Compact, rounded pebble-shaped body with non-slip feet on the bottom; Metal shell feels rugged and solid in the hand.
Flagged: Sustained write collapses once the secondary cache is exhausted on large continuous transfers; Priced above competitors that are equally fast or faster; Middling PCMark 10 result — lands in the lower half of the 2024 comparison set.