Samsung z nand

Samsung SZ985 – specification of the Z-NAND drive, competitor Intel Optane


In late October, we finally saw the announcement of the first consumer SSD disks with 3D XPoint memory from Intel in the form of the Optane SSD 900P series. But Samsung has signaled that it allegedly hints that it is worth waiting for their alternative in the form of carriers called Z-NAND.

The Korean giant published a Z-NAND specification called SZ985. It turns out it not only offers similar performance, but in some places it’s even noticeably better than the competitor’s carrier. But that’s not all, the manufacturer also claims that it will be cheaper from the competitor’s offer, although the prices have not yet reported.

SZ985 simply destroys the Intel product, when it comes to sequential reading and writing data, in both cases it boasts a speed of 3.2 GB / sec, where Optane achieves, respectively, 2.4 GB / s and 2 GB / sec. The Samsung hard disk also has an impressive reading level of IOPS, which is 750,000, but if it is a record, it is only 170,000 – here’s a comparison of the SSD Optane 900P for 550,000 reads and 500,000 entries.

SZ985 z nand

If we are talking about an area in which the technology of 3D XPoint have an advantage, then this is a delay when writing and reading. Although, we must admit that the differences are not big, because in Z-NAND the delays are 12-20μs for random reading of data and 16μs for writing (this is 10 times better than in standard SSD media based on NAND memory), while as in Optane discs, the delay is 10μs / 10μs for reading / writing.

Thus, if the Samsung offer really does have a more attractive price, then the manufacturer will not have problems from selling it. Z-NAND can be a big problem for Optane, especially if it gets good support from the software.

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