Archived from groups: alt.comp.hardware.pc-homebuilt (
More info?)
Very articulate and informative reply, Jim. You really should consider
moonlighting as a manual writer for some of the Taiwanese hardware
manufacturers in your spare time!
Russell
"Jim" <null@null.com> wrote in message news:_%Wac.3617$zh.2898@fed1read07...
> I should add one other caveat that *is* relevant in your case.
>
> In some cases, the use of SATA *bypasses* the PCI bus! In the case of a
> mobo using the ICHR chipset (e.g., your ASUS P4P800 Deluxe), the SATA
> interface on the mobo is a *true* SATA interface in that it uses its own
bus
> (much the way CSA helps bypass the PCI bus for LAN traffic). In these
> cases, this *may* offload enough traffic from the PCI bus to cause an
> *overall* increase in performance. IOW, if you have applications that are
> already saturating (not just using, but saturating, concurrently) the PCI
> bus (LAN traffic, AGP graphics, sound card, etc.), and/or HD intensive
> applications (e.g., video/audio editting), then it only makes sense that
in
> these cases, employing BOTH the SATA and IDE interfaces will deminish
> congestion on their respective buses, and thus increase overall
performance.
> But the performance increases are the result of using the SATA of the
mobo,
> NOT a function of the SATA HD itself (excluding Raptors).
>
> That's why for anyone else reading this post and considering its
> applicability to their situation, you need to consider your mobo SATA
> interface too. For example, some of the earliest SATA-enabled mobo's did
> NOT use the Intel Canterwood or Springdale (865/875) chipsets, some use
the
> Intel 845, still others currently use chipsets from VIA or SiS, thus they
> are forced to support other SATA options, such as a Silicon Graphics SATA
> chipset (which interfaces to the PCI bus). Or the mobo may have the Intel
> 865/875 chipset supplemented with one from Silicon Graphics to *add* more
> ports (or additional RAID options). In these cases, use of the Intel SATA
> interface bypasses the PCI bus, but use of the Silicon Graphic interface
> does NOT!
>
> For most people, under most circumstances, the 1Gbit/sec (133MB/sec)
> capacity of the PCI bus will be sufficient. Concern over whether to
employ
> the SATA bus to relieve congestion probably isn't worth worrying about,
but
> there are always special cases where it will matter, so you should be
aware.
>
>
> Bottomline: Consideration must be given to the nature of the mobo SATA
> interface, who provides it, and whether it does or does not use the PCI
bus.
> This *can* affect overall performance and should go into your analysis
when
> determining whether a SATA HD, at its current state, is right for you.
> Since noone but you can truly understand your needs and the demand you
place
> on the ystem, that's a determination only you can make.
>
> HTH
>
> Jim
>
>
> "Jim" <null@null.com> wrote in message
news:B6Mac.3247$zh.3013@fed1read07...
> > Most of the current SATA drives are nothing more than IDE drives in
"SATA"
> > clothing! They have a chipset that provides a bridge between the SATA
and
> > IDE interfaces, that's all. So there's really no justification for the
> > increased pricing on these particular SATA drives. The one exception is
> the
> > WD Raptors, these *are* a true rework of the HD. But even these come
> > nowhere near the 150MB/sec capability of the SATA 1.0 spec. With the
> > current state of HD technology, it's the internal mechanics of the HD
that
> > limit its throughput, NOT the interface. So simply changing the
interface
> > isn't going to result in vast improvements.
> >
> > If you really want more performance, nothing works better than RAID0
> > (stripping) a pair of HDs, esp. w/ Raptors (I've seen reports of
60MB/sec
> or
> > better, a typical IDE RAID0 might garner 40-43MB/sec).
> >
> > So unless you go for the Raptors, there's not really much gained w/ SATA
> > (IMO), esp. since they continue to sell at a premium. Heck, Circuit
City
> > was dumping 160GB IDE HDs for $20 after rebate the other day (in-store)!
> > Granted, an extremely awesome and rare deal, but $60 for that same HD at
> > Circuit City has popped up several times over the past several months.
At
> > those prices, it's awfully hard to bite on SATA when there's essentially
> no
> > benefits.
> >
> > HTH
> >
> > Jim
> >
> >
> > "Peter B." <xpetebucy@earthlink.net> wrote in message
> > news:c9um60hs8ggeuefrehk705adkcacln6lh9@4ax.com...
> > > I need to add a new hard drive to my ASUS p4p800 deluxe machine. It
> > > currently has an ATA 100 drive. In the real world, are the SATA drives
> > > that much faster than an ATA drive? I know that they are capable of
> > > operating a 150 MBps, but does that translate into a drive that is 50%
> > > faster than my current drive?
> > >
> > > Are there any other advantages or disadvantages to SATA drives?
> > >
> > > Pete
> >
> >
>
>
osts are correct in general. The average user will
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