whats better for my system ide or ahci?

kevintaper · 27 Sep 2009 at 10:48

as topic says, i have windows vista ultimate on raid 0 with 2 x 150gbs raptors, ive recently downloaded windows 7 and have it on a seagate 1tb hdd in ide mode, is there more perfromance with ahci enabled??, i.e can i change to it now from ide??, and whats is ahci mode, and the benifits? help would be appreciated

Stonedofmoo · 27 Sep 2009 at 10:50

Yeah choose AHCI mode, it's more up-to-date and supports features like Native Command Queuing and hotswap ability.

kevintaper · 27 Sep 2009 at 10:53

so thats the only diffrence?, all i have to do when i use the drive with windows 7 is change to ahci???????????

AbsenceJam · 27 Sep 2009 at 11:30

NCQ is slower for single users and you can hotswap without it. No reason to use it, all you're doing is reducing compatibility with monitoring and recovery tools.

reygjabla · 27 Sep 2009 at 11:47

kevintaper said:
so thats the only diffrence?, all i have to do when i use the drive with windows 7 is change to ahci???????????

Nope. Enable the AHCI driver in the registry before you change the SATA mode of the boot drive. To do this, follow these steps:
Exit all Windows-based programs.

Click Start, type regedit in the Start Search box, and then press ENTER.

If you receive the User Account Control dialog box, click Continue.

Locate and then click the following registry subkey:

HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\Msahci

In the right pane, right-click Start in the Name column, and then click Modify.

In the Value data box, type 0, and then click OK.

On the File menu, click Exit to close Registry Editor.

Or, you need to enable AHCI on your Bios first before installing W7 for it to install the necessary drivers.

breeza · 1 Oct 2009 at 21:52

reygjabla said:
Nope. Enable the AHCI driver in the registry before you change the SATA mode of the boot drive. To do this, follow these steps:
Exit all Windows-based programs.

Click Start, type regedit in the Start Search box, and then press ENTER.

If you receive the User Account Control dialog box, click Continue.

Locate and then click the following registry subkey:

HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\Msahci

In the right pane, right-click Start in the Name column, and then click Modify.

In the Value data box, type 0, and then click OK.

On the File menu, click Exit to close Registry Editor.

Or, you need to enable AHCI on your Bios first before installing W7 for it to install the necessary drivers.

That looks like a useful bit of info - adds to memory banks..