Date: Thu, 22 Sep 2005 17:49:13 -0700 From: =?ISO-8859-1?Q?Malachi_de_=C6lfweald?= <malachid@gmail.com> To: "O. Hartmann" <ohartman@mail.uni-mainz.de> Cc: freebsd-questions@freebsd.org, freebsd-amd64@freebsd.org Subject: Re: nForce4-SLI, AHCI and NCQ and FreeBSD 6.0 Message-ID: <c090347a0509221749604cf48c@mail.gmail.com> In-Reply-To: <43202588.9030903@mail.uni-mainz.de> References: <431D90E1.1030105@mail.uni-mainz.de> <c090347a050906070821e844d7@mail.gmail.com> <43202588.9030903@mail.uni-mainz.de>
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Asus's site seems to be down right now.... but at least Google caches it... http://66.102.7.104/search?q=3Dcache:CG_qYngXXLYJ:usa.asus.com/products/mb/= socket939/a8nsli-p/overview.htm+a8n+sli+premium+site:asus.com&hl=3Den It could very well be marketing hype. All I know is that one of the sellin= g points I chose it on was: "SATA 3Gb/s" (on that page) site and manual both say that the Si3114 supports 3Gb/sec, but they don't say that about the nVidia, which is why I was choosing it. I am not sure why it would be via the PCI32 bus... checking this page ( http://www.buzzsurf.com/speed/) it says that a PCI 64-bit bus running at 66MHz would be 4Gb/sec.... maybe they reserved the pciE for the SLI? As far as the performance, the manual says that the performance of raid 5 is greatly affected by block size.. from what I have seen online it has to do with whether the files being written are big enough to end up striped. Maybe the 10Mb/s is with a very large block size and very small files? Mayb= e a 4k block size and larger files would do better? Just guessing here, reall= y not sure. As far as why I chose the Premium instead of the Deluxe (for my Windows workstation and my FreeBSD server), there were a few reasons. The workstation primarily because it allows software-controlled flipping betwee= n SLI and non-SLI, which I thought would be nice if I were to accidentally play games. For the server, I was going to go with a different board, but i= t didn't support RAID5, so I switched to this one. Of course, now I am seeing that RAID5 doesn't appear very realistic with FreeBSD :( Malachi On 9/8/05, O. Hartmann <ohartman@mail.uni-mainz.de> wrote: > > Hello. > Are you really sure the onboard Sil SATA controller supports SATA II? > When I studied the handbook of both motherboards, the A8N-SLI Deluxe and > A8N-SLI Premium I found both motherboards are idetically equipted with > the *not* SATA II capable SilI3114 SATA controller. By the way, as I > know, the second SATA controller is attached via the PCI32 bus, not via > PCIe! That means (in my opinion) there is no benefit using this > controller. It is more a marketing GAG than a serious add-on. > > RAID5 performance of ICH7R and SilI is said to be very, very poor (about > 10 MB/s read/write performance), so what benefit I do have using this > controller with it's senseless 'capabilities' and non-PCIe attachment? > > This is only a thought based on my personal available informations and > maybe wrong ... > > Oliver > > Malachi de =C6lfweald wrote: > > I have noticed the same thing with the onboard Silicon Image controller= . > > I am using the A8N-SLI Premium. I am using the Silicon Image controller > > instead of the nForce4 controller because it specifically said SATAII > > and said it supported RAID5 (whereas the nForce did not support RAID5). > > However, on boot it recognizes it as SATA150 (which should be SATA300). > > > > Malachi > > > > On 9/6/05, *O. Hartmann* <ohartman@mail.uni-mainz.de > > <mailto:ohartman@mail.uni-mainz.de>> wrote: > > > > Hello. > > I have a little question about the popular nForce4-SLI chipset for the > > Socket 939 platform. The onboard SATA controller of the nForce4-SLI > > chipset claims to be NCQ (or SATA II) capable, but nVidia implemented > > this feature in a not-AHCI-standardised way, but as an own solution. My > > question is: Is the FBSD 6.X driver for the nForce4-SLI chipset capable > > of using NCQ (as I know, the driver has to enable NCQ and it's not done > > automatically by the harddrive-controller interaction). > > > > Thanks in advance, > > Oliver > > _______________________________________________ > > freebsd-questions@freebsd.org <mailto:freebsd-questions@freebsd.org> > > mailing list > > http://lists.freebsd.org/mailman/listinfo/freebsd-questions > > To unsubscribe, send any mail to " > > freebsd-questions-unsubscribe@freebsd.org > > <mailto:freebsd-questions-unsubscribe@freebsd.org>" > > > > > >
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