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From: Nick on 10 Apr 2005 08:08 On Sun, 10 Apr 2005 05:47:22 +1000, "Rod Speed" <rod_speed(a)yahoo.com> wrote: > >Nick <no-email(a)published.nul> wrote in message >news:89ag51dtnjk5r91ugaieghptgv5igued08(a)4ax.com... > >>>> Actually, there are 16 data bit on a PATA cable. >>>> Transmiting data in parallel is much more complicated than in serial. >>>> That's why Sata is faster. > >>> Utterly mangled. > >> What ? The 16 bits ? Or the serial communication ? > >The > >>>> Transmiting data in parallel is much more complicated than in serial. >>>> That's why Sata is faster. > Yeah, the shortcut was a bit short, but ultimatly, that's the reason why.
From: Peter on 10 Apr 2005 11:01 > One can > buy 10,000 RPM drives with PATA interfaces but not with SATA. Not true: WD740GD World's fastest Serial ATA drive: 10,000 RPM, 4.5 ms seek http://www.dealtime.com/xGS-wd740gd Data Transfer Rate (maximum) - Buffer to Host - Buffer to Disk 1200 MB/s max2 816 MB/s max Average Read Seek 4.5 ms (average) Track-to-track Seek3 0.6 ms (average) Full Stroke Seek3 10.2 ms (average) Average Latency 2.99 ms (nominal) Rotational Speed 10,000 RPM Buffer 8 MB
From: Rod Speed on 10 Apr 2005 13:44 Nick <no-email(a)published.nul> wrote in message news:1n5i51l1gfhlo23vh8vrpi4nbjk1l49b4m(a)4ax.com... > Rod Speed <rod_speed(a)yahoo.com> wrote >> Nick <no-email(a)published.nul> wrote >>>>> Actually, there are 16 data bit on a PATA cable. >>>>> Transmiting data in parallel is much more complicated than in serial. >>>>> That's why Sata is faster. >>>> Utterly mangled. >>> What ? The 16 bits ? Or the serial communication ? >> The >>>>> Transmiting data in parallel is much more complicated than in serial. >>>>> That's why Sata is faster. > Yeah, the shortcut was a bit short, but ultimatly, that's the reason why. Fraid not.
From: J. Clarke on 10 Apr 2005 12:36 Peter wrote: >> One can >> buy 10,000 RPM drives with PATA interfaces but not with SATA. > > Not true: > WD740GD > World's fastest Serial ATA drive: 10,000 RPM, 4.5 ms seek > http://www.dealtime.com/xGS-wd740gd > > Data Transfer Rate (maximum) > - Buffer to Host > - Buffer to Disk 1200 MB/s max2 > 816 MB/s max > Average Read Seek 4.5 ms (average) > Track-to-track Seek3 0.6 ms (average) > Full Stroke Seek3 10.2 ms (average) > Average Latency 2.99 ms (nominal) > Rotational Speed 10,000 RPM > Buffer 8 MB If I'm the one who wrote that I apologize--must not have had my coffee or something--what I meant to write obviously was "One can buy 10,000 RPM drives with SATA interfaces but not with PATA." And I'm surprised that you're the only one that caught it. -- --John to email, dial "usenet" and validate (was jclarke at eye bee em dot net)
From: David Dyer-Bennet on 10 Apr 2005 14:44
"J. Clarke" <jclarke.usenet(a)snet.net.invalid> writes: > Derek Baker wrote: > >> "J. Clarke" <jclarke.usenet(a)snet.net.invalid> wrote in message >> news:d390360230v(a)news3.newsguy.com... >>> (b) that 72 MB/sec is for sequential transfers on the outermost zone. In >>> the real world you'd hardly ever see that transfer rate even with an >>> infinite-speed interface. >> >> True. Though the Raptor's already at 61 MB/sec average sustained. > > Which means sequential transfers. Not random access, which is what > usually happens in the real world. On servers, yes. On desktops, no. Transfers on my desktop tend to be loading large executable files, reading large image files, and writing large image files. Mostly I have enough memory so it's not swapping very much, which would be the main source of random access. -- David Dyer-Bennet, <mailto:dd-b(a)dd-b.net>, <http://www.dd-b.net/dd-b/> RKBA: <http://noguns-nomoney.com/> <http://www.dd-b.net/carry/> Pics: <http://dd-b.lighthunters.net/> <http://www.dd-b.net/dd-b/SnapshotAlbum/> Dragaera/Steven Brust: <http://dragaera.info/> |