enable NCQ in Vista64?

M

mtrupi

Gawd
Joined
Mar 26, 2007
Messages
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I put together this system just to try out things.
PCCHIPS A15G motherboard
4G DDR2 800
Athlon64 X2 4200+
80G Seagate SATA II

In Vista64 it enabled NCQ for the HDD by default. I have very slow performance with this enabled. I didn't expect NCQ would help in this system much but I sure didn't think it would make the things almost unusable.

Anyone else experience this? Should I look for some other cause or just leave NCQ disabled?

If it matters, I'm dual booting this with Ubuntu 8.04; 20G Linux, 55G Vista. I am pleasantly surprised with Linux by the way.

edit: I have found a few studies which show in a single user environment NCQ can be slower. Even with that I would not have expected a system to come to it's knees with NCQ enabled. Still, nice to see I am not totally nuts.
 
odd. i have ncq/AHCI enabled in XP (there's a hack to do this). Thinks are perkier, and i thought that would be the same in vista.
 
I've always had better performance (very noticably) with NCQ enabled. Somethin's jacked with yo junk.
 
That NCQ seems to have a negative effect may be misleading me. Some have mentioned indexing and superfetch can feel like a bad thing at first. If I stop experimenting with it for a while maybe it will get better as others have said.
 
My performance was degraded slightly when I enabled NCQ in XP on an nForce 4 board, but nothing major.
 
According to PCCHIPS support the board doesn't support NCQ. They didn't elaborate so I don't know why they said that. I thought the MCP61 did? Maybe they got a deal with nvidia for chips that didn't pass muster or there is some board design detail they didn't put in. Still a good value, just wish I had known.

edit: I believe there may be some issue around this where it's easier for tech support to just say disable NCQ. I have been experimenting with different settings. Advanced disk write caching may have done the trick.

edit: It also helped to put the SATA-I DVD drive on a different controller from the SATA-II HDD
 
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