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In Reply to: RE: Switch from IDE to AHCI with new platform - Recommended! posted by Mihaylov on October 25, 2010 at 18:17:02
Thanks for trying.Actually, I discovered that the large difference between IDE and AHCI depends on the bios setting Integrated Peripherals/SATA Port0-3 Native Mode which it must be "Enabled".
Edits: 10/26/10 10/26/10Follow Ups:
I have 286 albums with flac tracks on the 2.5" hdd (Hitachi 5K500.B) and scan time of music library during cMP start up is 25 sec. in IDE mode and AHCI mode with "Integrated Peripherals/SATA Port0-3 Native Mode" Enabled and Disabled - equally! The setting "Integrated Peripherals/SATA Port0-3 Native Mode" into "Enabled" in IDE mode lead to next:
...and into "Disabled":
...and "Enabled" or "Disabled" SATA Port0-3 Native Mode in AHCI mode lead to next:
From system board's manual:
About AHCI advantages (translation from russian):
"AHCI mode provides the greatest gain (some times) in cases when some applications simultaneously work with a hard disk. Increase by that more than is more distance between areas with which applications simultaneously work. By operation mainly one application with a hard disk the effect from operation NCQ will be minimum." (http://acerfans.ru/faq/358-tekhnologija-ncq.-stoit-li-vkljuchat-ahci.html)Thus it is recommended to leave following settings:
Edits: 10/26/10
Firstly, let me say that in terms of speed I have to revise my initial position. The scan time of my 2000 CDs music library during cMP start up is ~60 sec. in IDE mode and AHCI mode with "Integrated Peripherals/SATA Port0-3 Native Mode" Enabled and Disabled - equally! The initial difference that I reported was probably due to HD coming out of sleep mode.
Secondly, IRQs in IDE mode and AHCI modes are different from yours.
IDE with "Integrated Peripherals/SATA Port0-3 Native Mode" Disabled:
IDE with "Integrated Peripherals/SATA Port0-3 Native Mode" Enabled:
SATA with "Integrated Peripherals/SATA Port0-3 Native Mode" either Disabled or Enabled:
Therefore, given that I do not have IRQs conflicts like you (my non-onboard USB sockets are just for mouse/keyboard + seldom used service), my personal recommendation is to leave in SATA mode Enabled. :-)
OK! Your recommendation is for your settings, and my recommendation is for my settings (disable all ide channels except IDE Channel 0 Master, disable all usb ports except two (one to leave for the wireless mouse, another to leave for connection external hdd, flash usb etc. - F_USB2 header on the system board) and disable "2 port SATA storage controller" ) :)
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