EDIT: Fixed the problem by moving F1 from SATA port 3 to port 0. All hard drives are now in UDMA6 mode. I am not sure why the SATA port would matter.
Hey guys, just installed it today. I am not sure why, but it's running in PIO 4 mode according to Device Manager. The "Enable DMA" check box refuses to stick even after uninstalling the ATA Controller. The other two SATA hard drive are all in UDMA6 mode. I also one SATA DVD-RW in UDMA2 mode and on IDE DVD-RW in UDMA2 also. Is this compatibiilty problem with NCQ?
Any reason why it's running in PIO mode?
HD-Tach gives:
Burst rate = 185MB/s
Averaged rate = 98MB/s
CPU utilization = 28% <-- rather large? seems to indicate it is running in PIO mode
My other two hard drives get 13% utilization.
HD Tune 2.55
doesn't make a lot of sense if active 8 is greater than supported 7
Supported: UDMA Mode 7 (Ultra ATA/512)
Active: UDMA Mode 8 (Ultra ...) it got cut-off
Minimum: 68.7MB/s
Maximum: 104.3MB/s
Average: 94.3MB/s
CPU Usage: 22% <-- again, seems pretty high
Gigabyte GA-P35-DS3L f8b BIOS, AHCI mode, Pentium-D 805 , Windows Vista Business