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  1. #1
    ROG Member Array lexo1000's Avatar
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    Intel RST Premium With Intel Optane System Acceleration (RAID)

    Hello,
    In my Z270 bios, I have two options for SATA Mode selection :
    - AHCI
    - Intel RST Premium With Intel Optane System Acceleration (RAID)

    What is the difference between them? Does the Intel SATA mode improve performance compare to AHCI?
    I specify that I have one Samsung M2 NVMe SSD & one Western Digital Hard Disk drive installed. No RAID in my setup.

    Thanks

  2. #2
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    The first Intel Optane SSDs will be used as a system cache. That setting is for when you plug in one of these drives in, it knows to use it for this purpose.

    Here's a promotional video by Intel about it: https://www.youtube.com/watch?v=QfhYcQ_IQOA

    Why it says RAID there, I have no idea. Might use the same interface for both RAID and Optane Acceleration.

  3. #3
    ASUS HQ Service Rep Array
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    Intel Optane technology based on 3D Xpoint and will offer significant improvements
    in endurance, performance, and power consumptio

    https://www.pcper.com/news/Memory/In...Memory-Modules

  4. #4
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    I managed to find this post (https://www.win-raid.com/t3220f23-qu...OS-option.html) and according to what I read the IRST is more complete even if you do not perform RAID since you can manage all the protocols. Textually says so a paragraph ....

    But what is the difference btw AHCI and this?
    "AHCI" is a standard data transfer protocol, whereas "Intel RST Premium" is just a name given by Intel to its new generation of Intel SATA Chipset and PCIe Storage Controllers. These Controllers are able to manage the AHCI and NVMe protocol and to create and manage Intel SATA / PCIe RAID Arrays.

    I hope it helps you

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