[plug] Serial ATA

Chris Caston caston at arach.net.au
Sat May 17 19:39:14 WST 2003


On Sat, 2003-05-17 at 19:06, Craig Ringer wrote:
> Cameron Patrick wrote:
> > On Sat, May 17, 2003 at 05:48:26PM +0800, Craig Ringer wrote:
> > | SATA is mainly nice because of its hot-pluggability, nice-to-work-with 
> > | cabling, airflow improvements, and lack of reliance on the awful 
> > | "master/slave" scheme. The speed just isn't much of a benefit, and quite 
> > | frankly I don't think there will be a drive that can properly flood 
> > | ATA100 before SATA rev 2 comes out at 300+mbps.
> > 
> > I was under the impression that (a) most current SATA hardware uses
> > PATA-to-SATA converter chips anyway
> 
> Most controller hardware does, but there's good hardware that doesn't 
> and more chipsets can be expected to implement it natively soon. 
> Especially if people make a point of buying the proper SATA 
> implementations which are 150mbps capable and hot-swappable instead of 
> ATA133 with a different connector.
> 
> > and (b) the PCI bus has less bandwidth
> > than SATA anyway - 133 MB/s vs 150 MB/s IIRC.
> 
> Well, 33MHz/32bit does, but /good/ PCI will be at least 33MHz/64bit if 
> not 66MHz/64bit. Then there's more serious PCI (becoming available on 
> "consumer" hardware at the very, very top end now) like PCI-X 100MHz and 
> 133MHz 64bit-wide PCI.

Are PCI-X and PCI express different standards?

regards,

Chris




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