NCQ on Intel Raid

WoZZeR

WoZZeR

WoZZeR

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Hope this isn't a faq, I searched the forum and found no mention so here goes:

How do you turn off NCQ on an Intel RAID Chipset ?

And, is it a good idea to turn it off ?

Ta.
 
Originally Posted by rpstewart
I'm not familiar with the Intel drivers but for NVidia it's on the SATA controller property page in Device Manager, that's probably a good place to start.
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Well it's pretty well hidden, I've hunted around the settings on and off for a few days and blowed if I can find it. Definately not in device manager, nor the Intel Raid Manager.
 
Originally Posted by arfur
I dont know how to turn it off on Intel but I have on my Nforce one, and it made about 15-20Mb/s difference. I think the NCQ gets a bit confused when its trying to arrange more than 1 disk. I also noticed that my CPU overhead dropped a lot as well when it was turned off, it works a treat on single disks though,
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I do like a free performance boost, ta for that.
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Originally Posted by rpstewart
Well turning off NCQ didn't do much for my RAID0 array, only another 5Mb/s. However it didn't half give my RAID5 array a kick up the backside, it went from an average read of about 180Mb/s to over 225Mb/s :D
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Now that's a performance boost!

I've had a good rummidge through the Intel site and they have oodles of techie stuff about NCQ but now't about switching it off.

Intel are just soooo adorable.....
 
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