Hard drives - DMA and PIO modes

G

glob

Power User
I have recently upgraded to an Asus P5K-E motherboard. It support AHCPI SATA. I'm running Vista x64 on a Samsung HD753LJ 750GB drive.

Shortly after installing I checked the Device Manager which showed the drive running in PIO Mode 4. I kept trying to set it back to DMA mode but to no avail.

However, using HD Tune 2.55 it says my drive is running in UDMA Mode 8. I never knew it went that high.

Any idea which software is telling me the truth?
 

My Computer

System One

glob said:
I have recently upgraded to an Asus P5K-E motherboard. It support AHCPI SATA. I'm running Vista x64 on a Samsung HD753LJ 750GB drive.

Shortly after installing I checked the Device Manager which showed the drive running in PIO Mode 4. I kept trying to set it back to DMA mode but to no avail.

However, using HD Tune 2.55 it says my drive is running in UDMA Mode 8. I never knew it went that high.

Any idea which software is telling me the truth?
Click to expand...

what speeds shows the drive?
 

My Computer

System One

  • CPU
    AMD X2 4400+ (socket 939)
    Motherboard
    Gigabyte GA-K8N51PVMT-9-RH
    Memory
    Corsair 4*1Gb DDR PC3200C2
    Graphics Card(s)
    MSI 8600GTS
    Hard Drives
    WD Raptor 74Gb
    Samsung Spinpoint HD501LJ 500Gb

My Computer

System One

  • CPU
    AMD X2 4400+ (socket 939)
    Motherboard
    Gigabyte GA-K8N51PVMT-9-RH
    Memory
    Corsair 4*1Gb DDR PC3200C2
    Graphics Card(s)
    MSI 8600GTS
    Hard Drives
    WD Raptor 74Gb
    Samsung Spinpoint HD501LJ 500Gb
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