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SMI had the SM2504XT Gen 5 SSD controller on display at Flash Memory Summit 2025 this week and this controller is a 4-channel NVMe 2.0 SSD controller that can run at up to 3,600MT/s. When utilizing MSDirect Storage, this controller can operate at an unbelievable 2.4W in active power mode and 1mW in PS4 state.
Performance for the SM2504XT is listed at up to 11.5GB/s read and 11GB/s write with up to 1.7 million IOPS read and 2 million IOPS write at low random 4K disk access. This engineering sample SSD was on display and we tested this sample with Crystal Diskmark and received these results:
This Gen 5 SSD controllers bandwidth performance with Direct Storage on in 3DMark was off the charts.
Given the right system configuration, the SM2504XT as a complete SSD just might be one of the highest performing ultra low power SSDs available …soon enough.
SMI SM2324 USB4 Gen 3 x 2 SSD CONTROLLER
SMI also had on display their SM2324 USB4 portable SSD controller, again with it running in a system where its speeds could be shown with Crystal DiskMark.
The SM2324 is a 4-channel controller that can run up to 1,600MT/s, has read and write speeds up to 4GB/s and supports Apple ProRes Recording and MFi Specifications.
SMI SM2708 SD EXPRESS CONTROLLER
Lastly, we have the SMI SM2708 SDExpress controller which sets a new standard of SD and microSD speeds of up to 1.8GB/s. This is a new test regimen for The SSD Review so stay tuned. Of particular interest to gamers is the fact that this specific controller increases performance in the new Nintendo Switch 2 significantly.
Right now we have the Nintendo Switch 2 in hand as well as a few cards for speed testing. Stay tuned as we tackle, not only speeds which will be an internet exclusive but also, load time testing for specific games.