Phison's Apex RAID demo showed us blistering 113 GB/s speeds in Computex demo

Phison has been showcasing its data storage innovations at Computex 2025. Of particular interest, we attended a partner demo where the firm utilized 32 of its latest and greatest PCIe Gen5 SSDs in a RAID setup. During the demo, we saw CrystalDiskMark report data transfer rates as high as 113.6 GB/s for reads, and 104.6 GB/s for writes.

The PS5028 for AI Workstation Live Demo

This demonstration of extraordinary speed was enabled by a powerful modern workstation PC and a mix of cutting-edge storage components. Specifically, Phison utilized an AMD Ryzen Threadripper Pro 7978WX CPU, installed on an Asus Pro WS WRX90E-Sage SE motherboard, as the foundation of the system.

The storage subsystem consisted of 32 of Phison’s potent new E28 Gen5 SSDs installed across a trio of Apex Storage X16 Gen5 add-in cards. All these components were installed in a sweet-looking be quiet! chassis, as you can see.

(Image credit: Future)

(Image credit: Future)

(Image credit: Future)

Phison’s new E28 Gen5 SSD rubs shoulders with the best in consumer mid-2025 PC land. A single E28 Gen5 in a modern PC will be able to deliver data transfer speeds of up to 14.8 GB/s reads and 14.0 GB/s writes. The Phison E28 Gen5 is being marketed as “the weapon of choice for serious gaming and productivity,” so it is definitely targeting consumers. Its controller features a quad-CPU architecture, is fabbed on TSMC’s 6nm node, and supports up to 32 TB.

Here we had 32 of Phison’s new E28 Gen5 SSDs; however, each Apex Storage X16 Gen5 add-in card can fit 16 M.2 SSDs (there’s a clue in the name), so two would have sufficed for a 32x SSD demo. We guess three cards were installed for optimal performance, load balancing, or another nuance of the Threadripper-powered Windows system.

The storage performance in this setup seems remarkable. Witnessed data transfer rates as high as 113.6 GB/s for reads, and 104.6 GB/s for writes might seem amazing. However, it was confirmed by a Phison rep that the Windows kernel was actually holding back performance.

(Image credit: Future)

(Image credit: Future)

(Image credit: Future)

Apex Storage’s new X16 Gen5 add-in card features the PM584 Microchip switch that has 84 lanes, claimed to support the full 16 M.2 at full bandwidth. We were told each X16 Gen5 card also has a limit of 128TB of addressable storage, at this time (that would require using 32x 4TB drives).

If you are interested in the Apex Storage X16 Gen5 card, we were told that it ships in 30 days and will cost $3,995 without any storage onboard.

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