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Old June 20, 2008, 07:16 PM
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this is with a pcix 1x controller and only 2 raptors. notice that its pretty much slammed up to the top untill the tail end, then it tapers off, comapair it to your shot enaberif, i would expect that if its running to max capacity that it should steadily drop from the start to the finish. It looks to me like its hitting a wall untill the end before showin its true speed at the end
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vista 64 on these rigs
Q9450 @ 3.5Ghz | E8400 @ 4.2Ghz
8gb Muskin Redline. | 2gb Kingston Hyperx
________________________________|_________________ ______________
EVGA 780i FTW ----\--||___||--/---- EVGA 780i SLI
Antec TP Quatro 1000W \ :==^==: / Antec TP Quatro 850W.
Nvidia 9800 GX2 X 2 SLI \|--o--|/ Nvidia 8800 GTS X 2 SLI
1X 500GB Western Digital. \_____/ 3X 150GB WD RAPTOR RAID-0
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  #22 (permalink)  
Old June 20, 2008, 07:31 PM
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I'm going to say if you've tried so many different combos and its still the same.. that you got some funky drives.
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  #23 (permalink)  
Old June 20, 2008, 08:54 PM
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thats the thing though, its not all the same... 2 drive combo on the onboard chipsets net me between 110 and 117 mb/s where 3 drives give me 130-140... but the pcix card gives 130 with 2 drives, so i know that im topped out somehow, but if the two drives can get 130 on the card, they should be able to do the same with the onboard because i know for sure that the onboard raid can do at least 130-140... and the two drives together can do at least 130...
__________________

vista 64 on these rigs
Q9450 @ 3.5Ghz | E8400 @ 4.2Ghz
8gb Muskin Redline. | 2gb Kingston Hyperx
________________________________|_________________ ______________
EVGA 780i FTW ----\--||___||--/---- EVGA 780i SLI
Antec TP Quatro 1000W \ :==^==: / Antec TP Quatro 850W.
Nvidia 9800 GX2 X 2 SLI \|--o--|/ Nvidia 8800 GTS X 2 SLI
1X 500GB Western Digital. \_____/ 3X 150GB WD RAPTOR RAID-0
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  #24 (permalink)  
Old June 23, 2008, 08:22 AM
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I put 3 WD2500JD drives in RAID 0 on my 680i based mainboard. Unfortunately, the RAID drivers would not install under Win XP and I did not take the time to try and troubleshoot it. Vista, however worked right out of the box. Here is a screenshot of HD Tune results:


As you can see the test shows the same odd saw tooth pattern. I do not know what that is about. My previous benches were with HD Tach (which apparently does not work in Vista ) and under XP. One drive gave an average performance of 50ish MB/sec average and two drives in RAID 0 just about doubled that. It is rather disappointing to see the addition of a third drive does not provide a linear performance improvement and also yields some weird behaviour.

I just used the default settings for the array and the stripe size was "optimal" (whatever that means). I read some forum post that said RAID 0 will be faster if you use a small block size. I may try that next. If I clear off my backup drive I could also try it with four drives to see what happens.
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  #25 (permalink)  
Old June 26, 2008, 02:45 PM
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I'm in the process of finding a good pcix 4x controller to try out, I'll post back my results with it soon as i can. I think 3 raptors are faster than the onboard controller can handle already.
__________________

vista 64 on these rigs
Q9450 @ 3.5Ghz | E8400 @ 4.2Ghz
8gb Muskin Redline. | 2gb Kingston Hyperx
________________________________|_________________ ______________
EVGA 780i FTW ----\--||___||--/---- EVGA 780i SLI
Antec TP Quatro 1000W \ :==^==: / Antec TP Quatro 850W.
Nvidia 9800 GX2 X 2 SLI \|--o--|/ Nvidia 8800 GTS X 2 SLI
1X 500GB Western Digital. \_____/ 3X 150GB WD RAPTOR RAID-0
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