Sabrent officially warranties the Rocket 4 Plus for five years (or until you hit the rated TBW figure in data writes, whichever comes first), but you must register with the company to get the full warranty. Our test unit's 5,600TBW rating is considerably better than the 8TB Rocket Q's 1,800TBW. The Rocket 4 Plus uses more durable TLC memory, as is reflected in its "terabytes written" (TBW) spec, a manufacturer's estimate of how much data can be written to a drive before some cells begin to fail and get taken out of service. This is only the second 8TB SSD we've ever tested after the Sabrent Rocket Q, a PCI Express 3.0 device with QLC-based memory. As is typical with SSDs, huge capacity is a luxury for which you pay extra on a per-gig basis. From there, both the higher- and lower-capacity versions get progressively more expensive. You can see that, value-wise, the Rocket 4 Plus' sweet spot is 2TB, with a cost of just 10 cents per gigabyte.
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