Not too long ago, main SSD distributors Essential and Western Digital have each been caught swapping out TLC NAND of their client SSDs for cheaper however a lot lower-performance, lower-endurance QLC NAND. Samsung seems to be becoming a member of them within the part-swapping nook of disgrace as we speak, due to Chinese language Youtuber 潮玩客, who documented a brand new model of the Samsung 970 Evo Plus utilizing an inferior drive controller.
Though the consumer-facing mannequin variety of the drives didn’t change—it was a 970 Evo Plus final 12 months, and it is nonetheless a 970 Evo Plus now—the producer half quantity did. Sadly, the producer half quantity is not seen on the field the SSD is available in—so far as we have been capable of decide, it is solely proven on a small label on the drive itself.
Falling off the write cliff
This CrystalDiskMark check makes the newer, inferior drive look quicker than the unique in most exams—however discover the very small 1GiB check measurement. This check is not escaping the SLC write cache! [credit: 潮玩客 ]
We examined the 970 Evo Plus (alongside the 980, and the older 970 Professional) in March, clocking it at write speeds of 1,600+ MiB/sec on 1MiB workloads. Our benchmarking was carried out with he previous model, half quantity MZVLB1T0HBLR. The newer model—half quantity MZVL21T0HBLU—is significantly slower. In keeping with 潮玩客’s check outcomes, the newer model solely manages 830MiB/sec—half the efficiency of the unique.
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