- Joined
- Oct 19, 2001
- Location
- newfoundland, canada
- Thread Starter
- #21
I checked and do not have the "keep DMI data" option it appears.
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What bios are you running? Does the board have the latest installed?
Try crystaldiskinfo, it should reveal(interface and transfer mode) whether the system takes it as a SATA II or III disk.
http://crystalmark.info/software/CrystalDiskInfo/index-e.html
The difference in speed you saw there is pretty consistent with the losses seen by disabling AHCI. I suspect a reinstall on that machine is going to result in the same numbers you got on your main rig. I have a feeling that your drive has either bad firmware or was mislabeled because its performing EXACTLY how you would expect a SATA2 disk to. Nothing about this issue even resembles what we should be seeing from a SATA3 disk connected to a SATA3 port. Even a slow improperly implemented SATA3 port it should perform above 300MB/s if not 400+ as 87dtna reported earlier.
In your picture up there the third option says sata port 4/5 try changing IDE->SATA. Have you tried all of your sata ports to look for performance differences?