Gaming PC

Some PCIe 5.0 SSDs Confined to 10 GBps; Others Hit 12.4 GBps

At least three SSD manufacturers — Corsair, Gigabyte, and good rum — has unveiled an SSD based on Phison’s E26 controller with a PCIe 5.0 x4 interface over the past few weeks. Corsair and Goodram drives offer maximum sequential read speeds of 10 GBps, while Gigabyte’s are said to reach 12.4 GBps. There is a reason for this. There are currently no 3D NAND chips fast enough to saturate controller capabilities.

Phison’s PS5026-E26 controller has eight NAND channels, which are common in client SSDs. These channels support different data transfer speeds, but saturating PCIe 5.0 x4 (15.754 GBps in both directions) requires 3D NAND memory with a 2400 MTps interface. Micron first announced such memory in July this year, SK Hynix followed his early August, and YMTC announced the Xtacking 3.0 architecture that allows for speeds of 2400 MTps. All of Phison’s E26 demonstrations use his SSDs with Micron’s latest 3D NAND chips, and this is when these drives hit sequential read speeds of up to 12 GBps. Galax also tested his HOF Extreme 50 SSD with Micron’s 232-layer 2400 MTps chip. IT home (opens in new tab).

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