Archived from groups: alt.sys.pc-clone.dell (
More info?)
Not completely nuts. Pull the pair of CRIMMs and install a pair of 128MB
PC800's for 512MB. Or go for a pair of 256s for a total of 768MB.
The CRIMMs show up the wierdness of the RAMBUS approach. Continuity RIMMs are
needed to close some circuits in RIMM sockets not populated with real honest to
gosh memory... Ben Myers
On Wed, 15 Dec 2004 01:16:21 -0500, "Sideshow Bob"
<mergatroid@_nospam_.bigfoot.com> wrote:
>Yes, PC800, I neglected to mention that. I've also since found out that 2 of
>what I thought were RAM modules may actually be blanks or CRIMMs. So it
>actually could be 2x128. Ahhh, this is nuts. Anyway, I appreciate the
>responses.
>
>
>"Tom Scales" <tomtoo@softhome.net> wrote in message
>news:9-GdnRkQKvl9TiLcRVn-uw@comcast.com...
>> The 8100 has four slots for memory, so leave the 2x64 and ADD 2x256 for a
>> total of 640.
>>
>> PC800 2.5CL if I remember. Definately PC800.
>>
>> Tom
>> <ben_myers_spam_me_not @ charter.net (Ben Myers)> wrote in message
>> news:41bfc48a.56031125@nntp.charter.net...
>>> RDRAM is like the old 72-pin SIMMs in Pentium class computers. The rule
>>> is that
>>> the memory sticks have to be installed in matched pairs. So, yes, by all
>>> means,
>>> pull a pair of 64s and install a pair of 256s for a total of 640MB. Make
>>> sure
>>> you get the right speed grade. There are 4 speed grades: PC600, PC711,
>>> PC800,
>>> and PC1066. The latter came along at the tail end of the very short
>>> RAMBUS-personal computer era, and it is often incompatible with older
>>> motherboards.
>>>
>>> Check the speed grade on the 64s in the system now, and get the same or
>>> faster.
>>> In other words, if you have PC600 now (unlikely in a Dell), you can
>>> install any
>>> one of PC600, PC711 or PC800 speed grades. If you have PC711, then
>>> either PC711
>>> or PC800 will do. Doing it this way will keep you out of trouble.
>>>
>>> One last thing: RAMBUS memory is pretty expensive again. Very little new
>>> RAMBUS
>>> is manufactured, and you may end up having to get used memory from a
>>> known
>>> reliable source. www.crucial.com does not sell RAMBUS because Micron
>>> (owner of
>>> Crucial) never paid the extortion royalties to the RAMBUS company to make
>>> the
>>> stuff... Ben Myers
>>>
>>> On Tue, 14 Dec 2004 23:30:07 -0500, "Sideshow Bob"
>>> <mergatroid@_nospam_.bigfoot.com> wrote:
>>>
>>>>I have a friend with a Dell Dimension 8100. I recently upgraded it from
>>>>Windows Me to XP Pro. All has gone well except for RAM memory allocation.
>>>>256 MB (4x64) was probably fine for Me but is barely adequate for XP. It
>>>>pages to the hard drive a lot and occasionally gives a prompt saying it's
>>>>temporarily increasing the page file, so obviously a memory upgrade is
>>>>needed. This is my first experience with RDRAM memory and I'm unsure
>>>>about
>>>>what I need to go from 256 to at least 512. Apparently RDRAM memory has
>>>>to
>>>>be done in pair sets. Can I keep 2 of the 64 modules and replace the
>>>>other 2
>>>>with 256s for a total of 640 MB, or does it have to be 4x128? Any
>>>>guidance
>>>>definitely appreciated. Thanks in advance.
>>>>
>>>>
>>>
>>
>>
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