AHCI- enable or disable?

[TitusTroy]

I'm using a Maximus Formula board and Vista Business 64-bit SP1 with AHCI currently disabled in the BIOS...should I enable AHCI for better performance?...I'm hearing conflicting info on whether or not it should be enabled or not...I mostly use my system for hard core gaming in a home/non server environment...I also have 1 SATA DVD drive and 1 IDE DVD drive in the system along with a SATA hard drive

 

[Fox5]

AHCI is generally something that has to be labelled prior to install of Windows. It cuts down on latency in multiple concurrent transactions, so it can offer a small performance boost. You'd go through hell to enable it without reinstalling windows though.

 

[TitusTroy]

I don't mind doing a re-install of the OS to enable it...I frequently reformat my drive so that isn't a problem for me...I was just wondering if enabling it would be worth it, performance wise...or if there were any huge negatives to enabling it...even if the performance improvements were very small to me it would be worth it as long as there was no negative side effects

I read a lot of horror stories from people who enabled it using XP so that scared me off a bit

 

[Albatross]

Originally posted by: Fox5
AHCI is generally something that has to be labelled prior to install of Windows. It cuts down on latency in multiple concurrent transactions, so it can offer a small performance boost. You'd go through hell to enable it without reinstalling windows though.

not true.try this

 

[Fox5]

Originally posted by: albatross

Originally posted by: Fox5
AHCI is generally something that has to be labelled prior to install of Windows. It cuts down on latency in multiple concurrent transactions, so it can offer a small performance boost. You'd go through hell to enable it without reinstalling windows though.

not true.try this

And you don't consider that hell? I've seen those instructions before and tried to use them, but wasn't successful.

 

[Albatross]

well,i tried that for myself and worked.granted, i had the same motherboard.

 

[Seggybop]

I enabled AHCI on an installed vista system today with a single registry modification:

# 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.

( http://support.microsoft.com/kb/922976 )

Is it not normally this easy?

 

[stevvie]

I also found it painless to enable AHCI AFTER windows was installed, and that was when I still had windows XP SP£ installed.

 

[Absolution75]

Originally posted by: Seggybop
I enabled AHCI on an installed vista system today with a single registry modification:

# 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.

( http://support.microsoft.com/kb/922976 )

Is it not normally this easy?

ya, thats all i did. . .