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AMD achi driver vs Microsoft achi driver

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August 25, 2011 4:18:43 PM

I have an OCZ agility 2 SSD on an Asus M4A88TD-V and I recently reinstalled windows 7 x64 to switch from IDE to AHCI mode. I unplugged all other HDDs and formatted while in the windows installer with the mobo set to ahci. Now my windows score for hdd speed has gone from 7.0 to 7.6, but my boot time is much slower. I have heard that using the AMD driver will help, but Ive also heard bad things about it. Would I see a performance increase by switching to the AMD driver? Also, does it support trim now?

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a c 523 G Storage
August 25, 2011 5:15:32 PM

Yes, AMD AHCI drivers support TRIM.

Here's the link to download AMD's latest drivers: http://support.amd.com/us/gpudownload/windows/Pages/rai...

If you're not satisfied with the performance of the AMD drivers you can always go into Device Manager and "Roll Back" the drivers to Microsoft AHCI.
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August 25, 2011 5:21:31 PM

This is true, OK I will give it a try tonight and post the results
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August 26, 2011 12:10:18 AM

OK, with the AMD drivers boot time went to about 3 minutes. I have no idea why.
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a c 523 G Storage
August 26, 2011 12:35:31 AM

bsnowman17 said:
OK, with the AMD drivers boot time went to about 3 minutes. I have no idea why.



Was it the 1st time you booted after installing the drivers? If so, then reboot and see what your time is.
If it's still 3 minutes then I guess you'll have to roll back to Microsoft drivers.
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August 26, 2011 12:51:04 AM

about 6 boots I'd say, I went back to the microsoft driver. I also tried IDE mode. Boot was faster, but AS SSD confirmed that read write speeds were better in AHCI mode. I guess it takes time to load the ahci driver?
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a c 523 G Storage
August 26, 2011 1:29:07 AM

bsnowman17 said:
I guess it takes time to load the ahci driver?


I guess so. Sorry, I couldn't help. Maybe other Forum members have other suggestions.
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August 26, 2011 2:33:10 AM

I had trouble when I had my OCZ vertex 3 plugged into port 5 or 6 on my M4A89GTD Pro/USB3 (the angled ports). I switched it back to port 1, set it to AHCI, re-installed windows, installed latest chipset driver then latest AMD AHCI driver and 10 second boot times :) 
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August 26, 2011 3:27:21 AM

Hmm, that's worth looking into, thanks!
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September 2, 2011 2:08:21 AM

axipher said:
I had trouble when I had my OCZ vertex 3 plugged into port 5 or 6 on my M4A89GTD Pro/USB3 (the angled ports). I switched it back to port 1, set it to AHCI, re-installed windows, installed latest chipset driver then latest AMD AHCI driver and 10 second boot times :) 


I believe that is because your board has some sata 2 and some sata 3 ports, and the vertex 3 is sata 3
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September 2, 2011 2:10:04 AM

Also, tonight, i reinstalled windows 7, this time deleting data on the ssd. Instead of partitioning and formatting manually, I clicked Next and let windows do all of that. Now I am also getting AHCI reads/writes and 10 second boots. Will try this set up with AMD ahci driver and report back!
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September 9, 2011 1:57:42 AM

Best answer selected by bsnowman17.
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