02-11-2014 03:18 PM
If you apply the registry change to add AHCI support to your Windows: http://support.microsoft.com/kb/922976
Then you can just change your bios back and forth and try it yourself.
02-11-2014 04:12 PM - edited 02-11-2014 04:14 PM
I stand corrected! Just tried AHCI myself and here are my new numbers
Old IDE numbers
New AHCI numbers
I guess the numbers speak for themselves. **bleep**, and I almost didn't try it! Holy Moly I guess I've graduated to AHCI!
11-21-2016 08:01 AM
Nice post here. AHCI can be used for windows operating system right? While IDE for customized operatig system only.
02-04-2018 04:20 PM - last edited on 02-04-2018 07:40 PM by pamelaz
Regarding IDE vs AHCI, all I seem to see are benchmark results, and I'm much more concerned about real world, everyday use and performance. Numbers are numbers, but the real world is the real world. When I got my first SSD last year, a Crucial MX300 525GB, I cloned my aging WD 500GB HDD with Win 7 Pro-64 bit OS to the SSD and at the time wasn't aware of AHCI. So, I've been running the SSD in IDE mode on my ASUS P5Q Pro (SATA II) mobo for the past year in my graphic design business, and boot times went from 2+ minutes with the HDD to 15 sec with the SSD. All programs open either instantaneously or within a few seconds, and opening/saving large graphic files is extremely fast. The Crucial is still going strong. However, since the aging HDD was developing C5 Current Pending Sector Count issues and couldn't be trusted as a backup, and being aware that any SSD can **bleep** the dust unexpectedly, I've since added a ***Edited to remove Crucial competitor*** SSD, to which I cloned the Crucial main drive so I will have a mirrored backup should the main drive fail. Both have Trim enabled and working, and although the ***Edited to remove Crucial competitor*** produces noticebly better benchmarks in Crystal Disk and AS SSD, in my everyday applications and use, there is absolutely no perceptible difference in performance. Both are extremely fast, with equally fast boot times and overall performance.
So, my question is, for those who have gone from IDE to AHCI on the same SSD, do you truly see a noticeable improvement in performance in everyday use? I have no need to hot swap drives and if switching to AHCI imporves boot time by maybe one second (big deal), and it would be difficult to improve on programs already opening instantaneously or within a few seconds, how could AHCI make everyday real world computing SO much faster than I'm already experiencing to warrant it? Am I missing something here?
02-05-2018 05:30 AM - edited 02-05-2018 05:31 AM
I don't think you'll see a noticeable difference in most home user scenarios. Nothing like the initital boost you get going from HDD to SSD. It mostly aids multitasking (for want of a better word) drive access. It would be very beneficial if you were a multi-user database server for instance.
I think the main thing is that there's generally no good reason not to have it on.
02-05-2018 10:25 AM
Thanks targetbsp. I've read a few reports of users experiencing various issues after switching from IDE to AHCI in Win 7, 8, and 10, such as lagging or some programs, CD drives not workng properly, so switched back. Any thoughts? Compatibility issues? I'm not running a multi-user database server and as long as Trim is enabled and working, and my system is extremely fast with no issues anywhere in my everyday use, I guess I'm still in the camp of 'if it ain't broke don't fix it'!
02-05-2018 12:13 PM
AHCI shouldn't cause a problem in itself. However, the drivers can do on select systems. In the vast majority of cases, the stock Microsoft AHCI driver and your chipset manufacturers driver will simply work. But only in most cases! Selected systems may find either the chipset or MS driver works better and in the case of the chipset driver - even the version can matter.