Phison Demos Its Next-Gen PCIe Gen6 “PS5303-X3” SSD Controller, Up To 28 GB/s Speeds, Full Gen6 Redriver/Retimer Stack Ready

Phison has demonstrated its next-gen PCIe Gen6 technologies, including its latest SSD controllers, and the full ecosystem driving future AI platforms.

Phison's X3 Is The Company's First PCIe Gen6 SSD Controller That Doubles The Transfer Rates Versus Existing Solutions

At Computex 2026, Phison is introducing its next-gen SSD controller called PS5303-X3-66. This controller is designed for SSDs and conforms to the upcoming PCIe Gen6 protocol that drives up transfer rates by 2x.

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The company also showcased the first products to utilize its next-gen controller, the Pascari PCIe Gen6 SSDs, coming in E3.2 and E1.S form factors. The SSDs make use of SK Hynix "Hynix H25T3TG88G" DRAM modules and feature onboard DRAM. Some of the features of the new in-house controller include:

• PCIe Gen6x4
• NVMe 2.3
• OCP v2.6
• Capacity: Supports up to 2 Petabytes
• Security: TCG Opal 2.3, DOE, IDE, Caliptra, CNSA 2.0
• SR-IOV: 64 Physical Functions (PFs)

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As for the initial performance estimates, the X3 "PCIe Gen6" SSD controller should boast up to 28 GB/s Sequential Read/Write speeds, up to 6800K Random Read/Write IOPS, and feature double the perf/watt with 4000 GB/s per watt.

That's 7W for the fastest Gen6 SSDs coming soon from Phison. Additionally, Phison also mentioned that its Gen5 SSDs offer the best-in-class efficiency, and are the only ones to achieve sub-5W (4.5W) operation while delivering 14.9 GB/s transfer speeds, whereas the competition's power numbers are around 7-8W.

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In addition to the new Gen6 controller, Phison is also ready with a full ecosystem of PCIe 6.0 solutions, such as Retimer and Redriver ICs, which were on full display at Computex:

• PS7261 PCIe 6.0 Retimer
  Phison is showcasing a 16-lane PCIe 6.0 Retimer supporting real-time telemetry analysis, PAM4 eye diagram visualization and LTSSM (Link Training and Status State Machine) monitoring to help engineers rapidly analyze signal quality, link stability, and system connectivity during PCIe 6.0 high-speed data transmission.
• PS7161 Linear Redriver
  In collaboration with Molex, Phison is also demonstrating an Active Copper Cable integrated with the PS7161 Linear Redriver to improve high-speed transmission distance and signal stability.

Lastly, we got to see Phison's in-house AI NPU chip, codenamed Topaz. This AIC card is also built on the PCIe Gen6 (x4) interface and features eight Topaz NPUs on an AIC. Each NPU is a quad-core Neural chip based on TSMC's 6nm process, offering up to 40 TOPS of compute, and supports LPDDR5/5X memory at up to 8533 MT/s. That's 320 TOPS of AI compute on a single AIC and coupled with tons of memory.

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