Archived from groups: alt.sys.pc-clone.compaq (
More info?)
I found out elsewhere that Intel uses a X4 ultimplier on the system clock
yielding 400Mhz FSB. (AMD uses a X2 multiplier on their XP line.) --L
"LJ" <whatever@sbcglobal.net> wrote in message
news
ihYd.8290$DW.6435@newssvr17.news.prodigy.com...
> Thanks, Tom. OK, this is my info and the source (of course, this is for my
> K7S5A mobo on the desktop. I have presumed that it applies to the Pentium
M
> Presario):
>
>
> Here is a little chart comparing the new 'PC rating' system, to the 'DDR
> rating', to the actual maximum MHz that the memory is rated to run at....
>
> PC# vs. DDR vs. MHz
>
> PC1600 DDR200 100Mhz
>
> PC2100 DDR266 133Mhz
>
> PC2700 DDR333 166Mhz
>
> PC3200 DDR400 200Mhz
>
> PC3500 DDR433 216Mhz
>
> PC3700 DDR466 233Mhz
>
> PC4000 DDR500 250Mhz
>
> PC4200 DDR533 266Mhz
>
> Note that the 'DDR rating' is always exactly double the MHz that it is
> designed to run at.
>
> This is because DDR is able to read info or 'data' on BOTH the rising and
> falling edge of a pulse... hence the Double Data Rate (or DDR for
short)...
> but DDR266 is still only running at 133 MHz
>
>
http://p199.ezboard.com/fk7s5amotherboardforumfrm5.showMessage?topicID=1200.topic
>
>
>
> My K7S5A mobo runs at 266FSB with PC2100 DDR. This is all kinda
> onfusing. --L
>
>
>
> "Tom Scales" <tomtoo@softhome.net> wrote in message
> news:iB3Yd.163154$JF2.117287@tornado.tampabay.rr.com...
> >
> > "LJ" <whatever@sbcglobal.net> wrote in message
> > news:EoYXd.18566$hU7.1525@newssvr33.news.prodigy.com...
> > >I have a have Presario X1370US laptop. The FSB is set at 400Mhz. The
> > > memory is PC 2700 which is designed for a 333MhZ FSB. I would have
> > > expected
> > > PC3200 ram? Anybody got an idea on this? --L
> > >
> > >
> >
> > Unless I am completely mistaken, PC2100 = 400FSB, PC2700=533FSB.
> >
> > At least in all the machines I own.
> >
> > Tom
> >
> >
>
>
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