Phison’s PCIe 5.0 SSD pulls 12.5GB/s on X670 chipset

Storage manufacturer Phison has demonstrated a new SSD controller over PCIe 5.0 interface, with read speeds of up to 12.5 GB/s on AMD’s new motherboard chipset.

Phison’s new SSD card is the PS5025-E26, a first token of the E26 platform on PCIe 5.0 (x4) interface. On paper, the total bandwidth of that interface is 15.8 GB/s — a doubling of PCIe 4.0 (x4).

For now, Phison achieves a read speed of 12,457 MB/s and a write speed of 10,023 MB/s, using an early sample SSD. The SSD in question uses an on-board Phison E26 controller and 3D TLC NAND flash storage from Micron.

Phison’s demonstration shows the controller paired with Asus’ X670 Crosshair Hero motherboard, with AMD’s new X670 chipset. The motherboard is most likely running on an early sample of a Ryzen 7000 CPU. Earlier, AMD had already indicated that with the first Zen 4 CPUs and motherboards, it already wants to bet on PCIe 5.0 storage.

It is still unclear when Phison’s new PCIe 5.0 products should hit the market, let alone when alternatives will be rolled out to consumers — or at what prices. Previously, the company had indicated that it plans PCIe 5.0 products for “the second half of 2022”, although “the end of 2022” now seems  plausible.

The demonstration on an X670 platform is extra relevant, however, with AMD publicly betting on Zen 4 as the first chip generation to embrace the new generation of storage, with a good 24 lanes on PCIe 5.0. According to AMD, the first PCIe 5.0 SSDs should launch simultaneously with Zen 4, later this year.

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