Samsung - 980 PRO 2TB vs SanDisk - Extreme PRO 2TB (Portable)

These two are nearly even on the Mars Score (66.7 vs 64.2). The decision is not about overall quality — both clear the bar — it is about which specific trade-offs fit your use.

Pick the 980 PRO 2TB if you care most about sequential read / sequential write. The biggest gaps in its favor are sequential read, sequential write. The single most decisive one: Sequential read — 250.00% more. 7000 MB/s vs 2000 MB/s.

Pick the Extreme PRO 2TB (Portable) if you care most about endurance (tbw) / interface. Its strongest claims are endurance (tbw), interface. The single most decisive one: Endurance (TBW) — 66.67% more. 2000 vs 1200.

Both ship with comparable capacity, so those specs do not separate the two — focus on the differences below.

Bottom line: there is no wrong answer here — match the spec advantages to how you actually use the product. The Mars Score parity says both are well-rounded; the differences are about trade-offs, not quality.