The Western Digital WD Black SN8100 4TB is the objective winner of this comparison, securing five out of seven total specification categories. Its most significant advantage is its sequential read speed, which outperforms the alternative by 101 percent. While the Crucial T500 2TB holds its own in one category and ties in another, it cannot match the overall technical dominance demonstrated by the Western Digital drive across the majority of the measured specifications.

Users who prioritize maximum storage capacity and the highest sequential read speeds should choose the Western Digital WD Black SN8100 4TB for their high-performance builds. Conversely, the Crucial T500 2TB is the better option for budget-conscious buyers, as it offers a 71 percent advantage in MSRP. Selecting between these two drives depends entirely on whether your primary requirement is the superior throughput of the larger drive or the cost efficiency of the smaller one.