My gear:
Gigabyte P67 motherboard - GA-P67A-UD3
Corsair 64GB SSD C300 SATA 3 - connected to SATA 3 Port
Seagate 1TB HDD ST31000 SATA 2 - connected to SATA 3 Port
So I installed Windows 7 but I had the bios set to treat SATA as IDE.
This caused no AHCI driver to install in Windows.
I set up my hard drives and all seemed fine, but then when I looked in my bios, I remembered about AHCI.
I used the steps found here http://support.microsoft.com/kb/922976 to get AHCI installed, and I rebooted my machine, changed the bios to AHCI, and Windows ran just fine.
Except then I started noticing major issues with file transfers between my SSD and HDD. Usually, I was getting around 70MB/s consistent, with Max Throughput around 150MB/s when transferring a collection of files aroun 8GB-20GB from SSD to HDD. The moment after I switched to AHCI, my Max Throughput jumped to nearly 300MB/s, but then the average and continual stream quickly shot down to as low as 6MB/s. The rate drops from a high number (150MB-300MB/s) to a very low number very fast making the transfer of a large group of files take forever!
I grabbed the auto_infl.exe Intel chipset 6 drivers and it upgraded my stock window ahci drivers to the Intel 6 ones for AHCI, but the low transfer speed problem still occurred. I defragged the HDD and the problem still existed.
I switched back my bios setting to IDE, and the transfer speeds are now once again averaging 70-80MB/s. Anyone know what's the deal?! Did I miss something about AHCI? Isn't it supposed to be faster and better?
Gigabyte P67 motherboard - GA-P67A-UD3
Corsair 64GB SSD C300 SATA 3 - connected to SATA 3 Port
Seagate 1TB HDD ST31000 SATA 2 - connected to SATA 3 Port
So I installed Windows 7 but I had the bios set to treat SATA as IDE.
This caused no AHCI driver to install in Windows.
I set up my hard drives and all seemed fine, but then when I looked in my bios, I remembered about AHCI.
I used the steps found here http://support.microsoft.com/kb/922976 to get AHCI installed, and I rebooted my machine, changed the bios to AHCI, and Windows ran just fine.
Except then I started noticing major issues with file transfers between my SSD and HDD. Usually, I was getting around 70MB/s consistent, with Max Throughput around 150MB/s when transferring a collection of files aroun 8GB-20GB from SSD to HDD. The moment after I switched to AHCI, my Max Throughput jumped to nearly 300MB/s, but then the average and continual stream quickly shot down to as low as 6MB/s. The rate drops from a high number (150MB-300MB/s) to a very low number very fast making the transfer of a large group of files take forever!
I grabbed the auto_infl.exe Intel chipset 6 drivers and it upgraded my stock window ahci drivers to the Intel 6 ones for AHCI, but the low transfer speed problem still occurred. I defragged the HDD and the problem still existed.
I switched back my bios setting to IDE, and the transfer speeds are now once again averaging 70-80MB/s. Anyone know what's the deal?! Did I miss something about AHCI? Isn't it supposed to be faster and better?