The Crucial T705 4TB wins in 3 out of 5 comparable specs, with 1 tie. Its biggest advantage is Sequential Read (7532% better).
Barracuda 2TB wins in 1 spec (MSRP: 91% better).
Recommendation
Choose T705 4TB if you want the best overall performance — especially sequential read.
Choose Barracuda 2TB if msrp matters more to you.
