Kioxia demonstrated the CM7 series of enterprise SSDs on the fourth-generation EPYC platform

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We previously reported that Kioxia launched the CM7 series of enterprise-class NVMe SSDs supporting PCIe 5.0 in July. After AMD launched its fourth-generation EPYC processor codenamed “Genoa” which supports PCIe 5.0, Kioxia conducted the first performance demonstration of the CM7 series on the platform.

In terms of the test platform, Kioxia used two EPYC 9354, the processor runs at 3.8GHz; 64GB 4800MHz DDR5 memory; the system is Ubuntu 22.04 LTS. The comparison object is the CM6 of its previous generation, which uniformly uses 3.84TB and 2.5 inches. The test software is Flexible I/O.

From the results, the sequential read of CM7 is as high as 13.7 GB/s, which almost saturates the PCIe 5.0 bandwidth of 14 GB/s. Compared with 6.9 GB/s of CM6, the improvement is nearly 100%. In the sequential write test, the CM7’s 6.6GB/s is also 57% higher than the CM6’s 4.2GB/s. However, while the performance of the CM7 is stronger, the power consumption is also higher than the 19W of the CM6, reaching 25W.

In addition to testing, Kioxia also gave some other parameters of the CM7. The random read performance can reach 2.5M IOPS, and the random write performance is 550K IOPS.


Kioxia stated in the test summary that compared with PCIe 4.0 SSD, the CM7 series can provide significant performance improvement with the fourth-generation AMD EPYC processor. Compute and storage-intensive workloads will definitely benefit from PCIe 5.0 technology, which allows CPUs and SSDs to better handle workloads and run applications at faster speeds for advanced business today and tomorrow’s need.

The CM7 PCIe 5.0 NVMe SSD is currently in pre-production and will be officially released soon.

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