Parity/ECC in Laptops

Archived from groups: comp.sys.laptops (More info?)

"MH" <removemstthiscrow5429spam@earthlink.net> wrote in message
news:E7NBc.9724$w07.8623@newsread2.news.pas.earthlink.net...
> I know that parity/ECC isn't implemented in laptops (as far as I know) due
> to energy consumption concerns, but has anyone ever released an x86 based
> laptop that used either parity or ECC? What about SPARC, m68k, PowerPC,
or
> anyone else? Does anyone manufacture notebook memory that is parity or
ECC
> capable? Thanks.
>


ECC memory is not used in laptops, and in
fact not even in most PC's. Only one of the
popular mass market chip sets supports ECC,
that is the Intel 875. AFAIK none of the
mobile chip sets support it.

Keep in mind that it is not sufficient for
the memory to be designed/configured for
parity/ECC -- the memory controller chip
must support it too.



dk

Archived from groups: comp.sys.laptops (More info?)

"MH" <removemstthiscrow5429spam@earthlink.net> wrote in message
news:4RQBc.13795$Wr.7849@newsread1.news.pas.earthlink.net...
>
> "Dan Koren" <dankoren@yahoo.com> wrote in message
> news:40d7c0aa$1@news.meer.net...
> > "MH" <removemstthiscrow5429spam@earthlink.net> wrote in message
> > news:E7NBc.9724$w07.8623@newsread2.news.pas.earthlink.net...
> > > I know that parity/ECC isn't implemented in laptops (as far as I know)
> due
> > > to energy consumption concerns, but has anyone ever released an x86
> based
> > > laptop that used either parity or ECC? What about SPARC, m68k,
PowerPC,
> > or
> > > anyone else? Does anyone manufacture notebook memory that is parity
or
> > ECC
> > > capable? Thanks.
> > >
> >
> >
> > ECC memory is not used in laptops, and in
> > fact not even in most PC's. Only one of the
> > popular mass market chip sets supports ECC,
> > that is the Intel 875. AFAIK none of the
> > mobile chip sets support it.
> >
> > Keep in mind that it is not sufficient for
> > the memory to be designed/configured for
> > parity/ECC -- the memory controller chip
> > must support it too.
> >
>
> Well, the 440BX chipset, used in both desktops
> and portables, was ECC capable.


I certainly know that -- this reply is being
typed on a 440BX desktop! ;-)


> Whether the feature was ever enabled in
> portables, I don't think so.


Not that I know of.


> Shame on Intel though, for not releasing
> more ECC capable desktop chipsets.


One is enough at any given time (currently
the 875). And the fact remains that most
desktops are not built/configured to use
ECC memory. I suppose the assumption is
that only mission critical production
applications justify using ECC, and
those will not be hosted on desktop
PC's.



dk

Archived from groups: comp.sys.laptops (More info?)

"Paul Rubin" <http://phr.cx@NOSPAM.invalid> wrote in message
news:7xd63rlgp5.fsf@ruckus.brouhaha.com...
> "Dan Koren" <dankoren@yahoo.com> writes:
> > ECC memory is not used in laptops, and in fact not even in most
> > PC's. Only one of the popular mass market chip sets supports ECC,
> > that is the Intel 875. AFAIK none of the mobile chip sets support it.
>
> I thought there were some Athlon laptops with ECC.


AMD has different chipsets, so what I
wrote above does not necessarily apply.

BTW I wouldn't touch an Athlon laptop
with 12 poles....



dk

Archived from groups: comp.sys.laptops (More info?)

Intel has more heat troubles than the AMD chips. AMD's heat issues went away
wayyy back when they first introduced the XP line up.

Dan


Paul Rubin wrote:
> "Dan Koren" <dankoren@yahoo.com> writes:
>> BTW I wouldn't touch an Athlon laptop with 12 poles....
>
> Why not? Heat issues? Does that include the mobile Athlon and
> Athlon 64? I've been interested in getting an Athlon 64 machine, but
> heat is the traditional enemy of laptops.

Archived from groups: comp.laptops,comp.sys.laptops (More info?)

"Mouse" <Mouse@cheese.storage> wrote in message
news:cbeknp$emp$2@jura.cc.ic.ac.uk...
> Hi,
>
>
> ECC memory mainly targets a server machine market, have you ever seen a
> server in laptop enclosures ?

Actually, yes, I have. I don't know why, it did seem odd. But they were
there.