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Windows 7: AHCI to Enable or Not?

26 Feb 2011   #1

Windows 7 Home Premium x64
 
 
AHCI to Enable or Not?

Hi, I am using a HP Pavillion 180t computer with Window 7(SP-1), IE9 RC. 12GB Ram, Quad Core i7, 3.33Ghz.

I do not have AHCI enabled based upon the Tutorial to do so. Would enableing AHCI be of value to me? If so how? Any help appreciated.

My System SpecsSystem Spec
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26 Feb 2011   #2

Windows 7 Ultimate x64
 
 

You get some more advanced features with AHCI like hot plugging and better native command queuing. It will improve performance especially on benchmarks. Real world performance is a lot less noticeable.

I used to run my rig on IDE, because AHCI introduced an 8 second delay at boot which I never felt I earned back in performance. On a later BIOS update, that 8 seconds went to 2, and I switched to AHCI at that point. It's going to really depend a lot on you and your exact machine.
My System SpecsSystem Spec
26 Feb 2011   #3

Windows7 Pro 64bit SP-1; Windows XP Pro 32bit
 
 

coop1

You have a SATA harddrive so I would leave it as factory setting.

AHCI is for Raid or using SSD normally.

pparks is correct you can do it.


Mike
My System SpecsSystem Spec
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27 Feb 2011   #4
Microsoft MVP

W 7 64-bit Ultimate
 
 

Hello coop1, here's the tutorial at the link below if you have need of it; have a look at the information contained therein.


AHCI : Enable in Windows 7 / Vista
My System SpecsSystem Spec
27 Feb 2011   #5

Windows 8.1 Pro (x64)
 
 

Quote   Quote: Originally Posted by Hopalong X View Post
coop1

You have a SATA harddrive so I would leave it as factory setting.

AHCI is for Raid or using SSD normally.

pparks is correct you can do it.


Mike
No, AHCI is not just for RAID or SSDs. In fact it is best with a SATA2/3 HDD. To use SATA2's Native Command Queuing, you must use AHCI. NCQ can make a lot of difference if there is a smart enough drive in use.
My System SpecsSystem Spec
27 Feb 2011   #6

Windows 7 Home Premium x64
 
 

Thank you all for your replies and information, it did help my understanding. Of course I could not resist trying the procedure to enable AHCI. For my computer, bad idea. Anyway, everything reversed to normal with no problem. Tryouts are how you learn. Thanks again.
My System SpecsSystem Spec
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 AHCI to Enable or Not?




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