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Phison E18 SSD controller writes 7 GByte/s

The new Phison E18 (PS5018-E18) SSD controller is the first PCIe-Gen4-x4 controller to achieve a read and write speed of over 7 GByte/s. In contrast to its predecessor, the Phison E16, which was manufactured using the 28 nm process, the new Phison E18 is produced in a 12 nm structure width.

The NVMe 1.4 protocol and four PCIe Gen4 lanes are used. To increase the speed even further, the controller supports (LP)DDR4 memory as a buffer. This is used for the mapping table. The maximum NAND capacity is 8 TByte.

Flash memory with three bit (TLC) or four bit (QLC) per cell can be addressed. The speed for sequential reading is 7.4 GByte/s and 7.0 GByte/s for sequential writing. The predecessor Phison E16 reached “only” 5 GByte/s reading and 4.4 GByte/s writing. The high data rates of the Phison E18 apply exclusively to the SLC buffer. The input/output operations per second (IOPS) are now at one million, the predecessor only reached 750k.

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Simon Lüthje

I am co-founder of this blog and am very interested in everything that has to do with technology, but I also like to play games. I was born in Hamburg, but now I live in Berlin.

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