Samsung - 980 PRO 2TB vs WD - Black SN850X 2TB

The Black SN850X 2TB edges ahead on the Mars Score (66.4 vs 69.4), but the 3.0-point gap is small enough that the right pick comes down to which spec advantages matter to you.

The 980 PRO 2TB doesn't pull ahead on any single popular-comparison spec — its strengths sit in the spec table groups rather than the headline advantages.

Pick the Black SN850X 2TB if you care most about sequential write and sequential read. Its strongest claims are sequential write, sequential read.

Both ship with comparable capacity, interface, endurance (tbw), so those specs don't 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 tells you both are well-rounded; the differences are about trade-offs, not quality.