870 EVO 1TB vs Extreme PRO 2TB (Portable)
A side-by-side readout for sequential read.
Understanding sequential read
Sequential read is a numeric spec measured in MB/s. On this metric, higher values are generally better, but returns diminish past category-typical thresholds — going from a low value to a mid value usually matters far more than going from a mid value to a high one. When comparing two products, focus on the percentage gap rather than the raw delta: a 200-unit lead means something very different at the low end of the range than at the high end. Pay attention to the unit, too — manufacturers sometimes quote peak or burst figures that are not sustained in real-world use. Cross-check the published number against independent measurements where possible, especially for performance and battery claims. Finally, remember that a single spec rarely tells the whole story; the Mars Score weighs sequential read together with the rest of the spec sheet so one outlier doesn't distort the verdict.
This matchupExtreme PRO 2TB (Portable)'s 2000MB/s is roughly 257% higher than 870 EVO 1TB's 560MB/s (a 1440MB/s gap). Whether that gap is noticeable depends on workload — small percentage gaps rarely change day-to-day experience, while gaps of 20% or more usually do.
Other specs on this comparison
See the full SSDs category for all products ranked by Mars Score.