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Thread: AHCI or IDE Mode???




  1. #1
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    Default AHCI or IDE Mode???

    is there any benefit using ahci over ide mode if you dont plan on using raid???

  2. #2
    profJim's Avatar
    profJim is online now Chief Munchkin + moderator
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    Default Re: AHCI or IDE Mode???

    With desktop systems, there is virtually no hard drive performance difference with AHCI enabled.
    AHCI mode is usually required if you have an SSD installed.
    I think that AHCI is required if you want to use the hot swap capability with your system.
    4K partition alignment will improve hard drive performance with Win7, and possibly with Vista. I don't know if this will help with XP.
    Check out http://forums.tweaktown.com/gigabyte...tml#post383199, post #44 for my results with 4K aligned partitions.
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  3. #3
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    Default Re: AHCI or IDE Mode???

    I use ahci for my Samsung hdd's both on xp and win7,one thing you do notice is the start up,it flies past the splash screen compared with a 5 second pause in ide,apart from that read/write figures are pretty much the same however you can use the advanced hdd features like native command queing in ahci
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  4. #4
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    Default Re: AHCI or IDE Mode???

    There is about 15-20% difference in threaded read speeds (Sometimes up to twice as fast with AHCI Vs IDE), and having NCQ enabled via AHCI can decrease HDD Chatter and improve disk searches, ect.

    If you have AHCI and a SATA hard drive there is no point in running IDE unless you ran into some issue caused by AHCI/RAID, or your board didn't offer the setting.

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