AHCI or IDE

magicroundabout · 22 Feb 2010 at 13:59

noticed when installing my SSD's new firmware it asked for it to be installed in AHCI mode so was wondering which is best to have my HDD drives running in and why?!

cheers

VortexA1 · 22 Feb 2010 at 14:33

It's best to have it in AHCI mode.

just one link of many.

http://www.legitreviews.com/article/1022/11/

Compare the two results. IDE vs AHCI.

I think it's to do with intelligently putting the information in order- to place straight onto the hdd.

magicroundabout · 22 Feb 2010 at 14:38

cheers VortexA1,

Also does the swapping from IDE to AHCI trick from Vista work in Win7?

- Run Registry Editor
- Go to HKLM\System\CurrentControlSet\Services\Msahci
- Change the "Start" value to 0
- Reboot and go to BIOS immediately
- Set BIOS to AHCI

The next time you load Windows, it will auto-detect the AHCI.

and doing this will it run as if i'd set it too AHCI from fresh instal?

VortexA1 · 22 Feb 2010 at 14:45

youre welcome m8.

I don't know about the registry hack on win 7 though.

magicroundabout · 22 Feb 2010 at 14:48

no worries. i'll try later and if need be do a fresh instal.

thanks once again

magicroundabout · 22 Feb 2010 at 18:22

well i have done the above trick and it has anstalled the drivers without needing to do a fresh instal and now running in AHCI mode in Win7 x64

D D Danneh · 22 Feb 2010 at 19:04

Yeah, that's the trick I did for my Windows 7.

To be honest, I haven't noticed any improvement, but then, I'm not that observant. All the stats say AHCI is better, so I'll leave it where it is.

VortexA1 · 22 Feb 2010 at 20:25

D D Danneh said:
Yeah, that's the trick I did for my Windows 7.

To be honest, I haven't noticed any improvement, but then, I'm not that observant. All the stats say AHCI is better, so I'll leave it where it is.

That's cool then. So you did the registry hack then. That would be a handy thing for me to do because I'm in IDE mode ATM and I want to go to AHCI with the SSD that I have.

Did you have any problems/hiccups at all doing that then?

What speed increase/MBs have you gained?

magicroundabout · 22 Feb 2010 at 20:49

VortexA1 said:
That's cool then. So you did the registry hack then. That would be a handy thing for me to do because I'm in IDE mode ATM and I want to go to AHCI with the SSD that I have.

Did you have any problems/hiccups at all doing that then?

What speed increase/MBs have you gained?

no hicups at all.

did the reg hack. rebooted into bios. swapped over to AHCI.
Went into windows which installed new drives. rebooted and all fine.

not tested my ssd as yet but will do now

magicroundabout · 22 Feb 2010 at 21:01

this is my current speeds. searching for an old bench i did.

VortexA1 · 22 Feb 2010 at 23:44

magicroundabout said:
this is my current speeds. searching for an old bench i did.

ok. Look forward to the old bench to compare.

magicroundabout · 23 Feb 2010 at 09:11

i've not got a crystalmark comparison but had a hdd tune one which i did when the drive was installed and before it had the new firmware on and running in AHCI mode.