Memory: What is PC2100, PC2700 etc

Hi all,

Just need to upgrade the RAM on my Elite K7S5A MB from 133SDRAM to a
couple of 512MB 266DDR sticks.

Questions:

What the heck are these PC2100, PC2700 etc standards that seem to have
emerged from nowhere? Are they all compatible (ie it doesn't matter
which I get, some are just faster than others)

What is EEC that I notice on some specs? Is it a quality mark or
something?

Cheers,
Jeremy

ps. I am still running 98 on this machine (don't laugh!). Will 98 be
able to utilise 1GB? I have a vague recollection of a RAM ceiling.

That mobo only supports PC1600 or PC2100 (multiply buss speed by 8 to
get the equivalent PC rating).
Windows 98 needs a limit on vcache to no more that 512M, see M$ KB;
http://support.microsoft.com/default...;EN-US;Q253912
Over in the M$ groups, the consensus seems to be 70% of your
available ram for less than 768M. It's specified in kilobytes.
NT based systems don't have the problem.
Put this in your system.ini -----
[vcache]
MaxFileCache=524000

Try this if you really mean EEC, not ECC.
http://www.crucial.com/media/releases/eec.asp

"Jerem,y Garrard" <> wrote in message
news: m...
> Hi all,
>
> Just need to upgrade the RAM on my Elite K7S5A MB from 133SDRAM to a
> couple of 512MB 266DDR sticks.
>
> Questions:
>
> What the heck are these PC2100, PC2700 etc standards that seem to
have
> emerged from nowhere? Are they all compatible (ie it doesn't matter
> which I get, some are just faster than others)
>
> What is EEC that I notice on some specs? Is it a quality mark or
> something?
>
> Cheers,
> Jeremy
>
> ps. I am still running 98 on this machine (don't laugh!). Will 98 be
> able to utilise 1GB? I have a vague recollection of a RAM ceiling.

When they went drom SDRAM (stuff like 100, 133 mhz) to DDRAM they also went
to higher numbers. Check with Crucial.com if you need memory - cheap and
direct as Crucial is Micron's direct sales minus a middleman.


"Jerem,y Garrard" <> wrote in message
news: m...
> Hi all,
>
> Just need to upgrade the RAM on my Elite K7S5A MB from 133SDRAM to a
> couple of 512MB 266DDR sticks.
>
> Questions:
>
> What the heck are these PC2100, PC2700 etc standards that seem to have
> emerged from nowhere? Are they all compatible (ie it doesn't matter
> which I get, some are just faster than others)
>
> What is EEC that I notice on some specs? Is it a quality mark or
> something?
>
> Cheers,
> Jeremy
>
> ps. I am still running 98 on this machine (don't laugh!). Will 98 be
> able to utilise 1GB? I have a vague recollection of a RAM ceiling.