NCQ = unstable, off = stable?

[AstroCat]

Built a new system, Had a couple instances where when installing some programs from the DVDR the system would freeze hard. I remembered having this issue in the past on other systems so I disabled NCQ on my 150 Raptor, and sure enough totally stable.

Any ideas why this is? My understanding is that disabling NCQ is ok to do and actually recommended by some for performance increases.

 

[montag451]

NCQ is usually recommended for Servers and the like.

For most home apps, you are right, you get a decrease in performance in general if utilising NCQ.

 

[rhk0327]

nf4 motherboard chipset has problems with ncq. Check wikipedia for NF4

 

[Oyeve]

Sorry to be OT, but how does one disable NCQ?