Windows 7 Forums
Welcome to Windows 7 Forums. Our forum is dedicated to helping you find support and solutions for any problems regarding your Windows 7 PC be it Dell, HP, Acer, Asus or a custom build. We also provide an extensive Windows 7 tutorial section that covers a wide range of tips and tricks.


Windows 7: How important is AHCI?

17 Nov 2010   #11
mickey megabyte

ultimate 64 sp1
 
 

what exactly is AHCI? (and is it pronounced 'achey' or 'arsey'? )

wikipedia says:
Quote:
The Advanced Host Controller Interface (AHCI) is a host controller interface defined by Intel which defines the operation of Serial ATA (SATA) host bus adapters in a non-implementation-specific manner.
non-implementation specific?


My System SpecsSystem Spec
.
18 Nov 2010   #12
mendopaul

Windows 7 64 bit Home Premium
 
 

Quote   Quote: Originally Posted by xxxdannyxxx View Post
I changed mine with the os installed using this tutorial

AHCI : Enable in Windows 7 / Vista
That tutorial really did the trick.......many thanks to all who suggested and commented. I gained a lot of good info from you all and increased my confidence in doing this. It seems faster now than before but the machine is so new and and un-loaded that it's not a good time to judge. Actually it was quite simple to do with that tutorial that was very good. I'm a happy camper thanks to all of you!
My System SpecsSystem Spec
19 Nov 2010   #13
sandeep108

Windows 7 x64
 
 

Enabling AHCI also enables NCQ. I have generally always found AHCI to be faster, though some people feel it is unstable. I have had no problems with it at all, either with HDD or SSD. With SSD, I believe it really increases performance.
My System SpecsSystem Spec
.

19 Nov 2010   #14
James Colbert

 
 

If I might beat the 'hot swap' drum one more time...a few years ago, I bought about 3 of these front-sata panels:

Akasa Thermal Solution

Then, they were around $12 each and come complete with data & power panel inserts and cables. It fits in a 3 1/2" floppy bay. I got mine from Sidewinder. The above link is to the manufacturer's site. Ignore the term 'Thermal'.

Not for everyone, but I have found these to be very useful.

Where to buy:

http://www.akasa.com.tw/update.php?tpl=wheretobuy.tpl

James
My System SpecsSystem Spec
19 Nov 2010   #15
Bill2

Windows 7 x64 pro/ Windows 7 x86 Pro/ XP SP3 x86
 
 

Performance benefits from NCQ happen only with long command queues which are unlikely on a desktop, or if one is running very disk intensive operations. It is of no use to the average home user.
My System SpecsSystem Spec
19 Nov 2010   #16
pparks1

Windows 7 Ultimate x64
 
 

I don't think I have ever tried to pronounce AHCI....instead I simply spell it A H C I. It's the same as IDE, I always spell it.....i never side the word ("ide").
My System SpecsSystem Spec
19 Nov 2010   #17
James Colbert

 
 

Quote   Quote: Originally Posted by pparks1 View Post
I don't think I have ever tried to pronounce AHCI....instead I simply spell it A H C I. It's the same as IDE, I always spell it.....i never side the word ("ide").

Perhaps we should set precendent. I vote for the southern pronunciation. If I were to use it in a sentence:

" 'Ah see' it may rain today..."

My System SpecsSystem Spec
19 Nov 2010   #18
sandeep108

Windows 7 x64
 
 

Quote   Quote: Originally Posted by Bill2 View Post
Performance benefits from NCQ happen only with long command queues which are unlikely on a desktop, or if one is running very disk intensive operations. It is of no use to the average home user.
That is technically correct. But when using a HDD with ncq I have felt it faster than using a non-ncq HDD. In case of SSD, I am not too sure whether the performance benefit is because of ncq or ahci.
My System SpecsSystem Spec
22 Nov 2010   #19
fseal

Windows 7 x64 Ultimate
 
 

I had an occasional lockup problem with NCQ on my Gen 1 SSD and turned it off and benchmarks showed the performance actually went UP a bit with it off. (and the lockups stopped too).

But the difference wasn't enough to actually notice when using it.

Since upgraded my MB and drivers and the NCQ problem is gone and have left it on these days.
My System SpecsSystem Spec
22 Nov 2010   #20
sandeep108

Windows 7 x64
 
 

A lot of the performance is also due to the drivers/chipset. e.g. AHCI it seems works best on Intel ICHR 8 and above with their drivers. It does not seem to matter as much with nVidia chipsets, jmicron controllers, etc.
My System SpecsSystem Spec
Reply

 How important is AHCI?




Thread Tools




Similar help and support threads
Thread Forum
cloned C:, installed AHCI drivers, changed BIOS to AHCI, D:'s GPT gone
see second post. I have a 3TB drive D: for data formatted with GPT. Had BIOS OnChip SATA Type set as "RAID" "As SATA Type" from back in the day. When I took out the RAID, I forgot to change this to AHCI when I reformatted and got rid of RAID drives! Changing to "AHCI" "As SATA Type" as...
Installation & Setup
No AHCI option in BIOS, is my computer default in AHCI or IDE?
I bought a brand new SSD, installed it in Windows 7, and there is no option in my BIOS for the SATA controller (to switch between IDE and AHCI Mode). How do I determine whether my computer's sata controller is using IDE or AHCI? I want to make sure that my AHCI controller is enabled and not IDE...
Hardware & Devices
Really Important.
Hello guys. I have an Intel Core i7 930 CPU running at stock settings and with a stock cooler. Till like a week back, the CPU Temps used to be 35 - 45 idle and 75 - 85 at load. But suddenly, last week they became like 60 - 80 and the load with no application/file open wouldn't go below 10 -...
Performance & Maintenance
Intel Sata controler ICH10R AHCI + Jmicron AHCI error
Hi. I have the GA-EX58-Extreme Board and have just installed the pre release of Win7 7600 64 bit. Normally i have experience to get the BSOD when in staling with AHCI active in bios so i change to IDE mode. Installation went flawless and also the change to AHCI mode on Intel ICH10R controler...
Drivers


Our Sites

Site Links

About Us

Find Us

Windows 7 Forums is an independent web site and has not been authorized, sponsored, or otherwise approved by Microsoft Corporation. "Windows 7" and related materials are trademarks of Microsoft Corp.

Designer Media Ltd

All times are GMT -5. The time now is 20:31.
Twitter Facebook Google+ Seven Forums iOS App Seven Forums Android App