Head-to-head

Samsung - 870 EVO 1TB vs SanDisk - Extreme PRO 2TB (Portable)

Last updated May 31, 2026 · How Mars Score works

Probe A

Samsung

870 EVO 1TB

43.5/ 100D

Performance35· 60%

Capacity62· 20%

Endurance—· 20%

Probe B

SanDisk

Extreme PRO 2TB (Portable)

52.5/ 100D

Performance45· 60%

Capacity73· 20%

Endurance—· 20%

Quick verdict

Between the 870 EVO 1TB and Extreme PRO 2TB (Portable), the 870 EVO 1TB comes out ahead in several specs, while the Extreme PRO 2TB (Portable) wins on sequential write and sequential read. Overall, the 870 EVO 1TB scores 43.5 and the Extreme PRO 2TB (Portable) scores 52.5 on our Mars Score.

Buying advice

Which should you buy?

The Extreme PRO 2TB (Portable) is the clear pick on raw spec strength, leading by 9.0 points on the Mars Score. The margin is wide enough that the underdog only makes sense if its individual strengths line up with what you specifically need.

The 870 EVO 1TB 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 Extreme PRO 2TB (Portable) if you care most about sequential write and sequential read. Its strongest claims are sequential write, sequential read, endurance (tbw), among others.

There are no meaningful ties on the headline specs — every popular-comparison metric has a winner.

Bottom line: the Extreme PRO 2TB (Portable) is the safer default. The other model is the right choice only when its specific advantages line up with your priorities.

Why Samsung - 870 EVO 1TB wins

No decisive advantages.

Why SanDisk - Extreme PRO 2TB (Portable) wins

▲Sequential write — 277.36% more. 2000 MB/s vs 530 MB/s.
▲Sequential read — 257.14% more. 2000 MB/s vs 560 MB/s.
▲Endurance (TBW) — 233.33% more. 2000 vs 600.
▲Capacity — 100.00% more. 2000 GB vs 1000 GB.
▲Interface: USB 3.2 Gen 2x2 (vs SATA III).

Full readout

Spec comparison

Capacity

Spec	Samsung - 870 EVO 1TB	SanDisk - Extreme PRO 2TB (Portable)
Capacity	1000 GB	2000 GBlead

Performance

Spec	Samsung - 870 EVO 1TB	SanDisk - Extreme PRO 2TB (Portable)
Sequential read	560 MB/s	2000 MB/slead
Sequential write	530 MB/s	2000 MB/slead
Interface	SATA III	USB 3.2 Gen 2x2lead
Form factor	2.5" SATA	Portable USBlead

Endurance

Spec	Samsung - 870 EVO 1TB	SanDisk - Extreme PRO 2TB (Portable)
Endurance (TBW)ⓘ	600	2000lead
Warranty	5 yrs	5 yrs

Reader questions

Frequently asked

Drill down

Spec-level deep dives

Capacity→Sequential read→Sequential write→Interface→Form factor→Endurance (TBW)→Warranty→

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