Samsung is by far the largest maker of RDRAM chips, with more than half
of the market, but Toshiba, NEC, Infineon and Elpida and perhaps one or
two other firms have all made RDRAM (and Toshiba, Samsung and Elpida, at
the very least, are still in active production). OCZ's modules are made
by Samsung, but it is believed that they have "cheated" on a number of
occasions, for example they offered "PC1200" modules at a time when no
such parts officially existed (PC1200 RDRAM parts do exist now, and it's
called RIMM4800 when used in a 32-bit 232-pin module, but there are no
desktop PC chipsets that use it).
I would guess (and that's all that it is) that Danelect's parts are also
made by Samsung (the chips almost certainly, but I'm really talking
about the whole module). Except for the OCZ modules (which are actually
made by Samsung), I've never seen a non-Samsung 32-bit 232-pin RIMM
module, although I've seen lots of non-Samsung 16-bit 184 pin modules.
Samsung is making parts that have no apparent use in desktop PCs.
However, aside from the entertainment devices that I mentioned (video
games, video projectors, cable boxes and HDTV television sets), the Cray
supercomputers and the HP/Compaq/DEC "Alpha" servers also use RDRAM, as
well as some network systems by Intel, Vitesse and others (these are not
based on PC chipsets). SO-RIMM RDRAM modules are in volume production,
although there are no RDRAM laptops; they are used in "1U" rackmount
network systems where space is at a premium.
It's truly unfortunate that the illegal conspiracy to block the adoption
of RDRAM succeeded (some details of this are contained in the full 340+
page decision of the FTC trial of Rambus that was released a few weeks
ago; there's a lot more in the DOJ Grand Jury investigation of Micron,
Infineon and Hynix, but most of those records are still sealed.). RDRAM
is a far superior memory type to DDR, both faster and more stable, with
more headroom for future growth, and it need not be more expensive than
DDR in terms of actual manufacturing cost. It wasn't even about money
(the RDRAM royalty is only 1.5%), but rather ego, control and market
domination. The irony of it is that Rambus will probably win their
infringement cases, eventually, and their royalty on DDR is 3.5% --
which HIGHER than their royalty on RDRAM memory. So the whole industry
will be paying Rambus a higher royalty for an inferior form of memory.
---== EHH ==--- wrote:
> Hello Barry,
>
> "Barry Watzman" <WatzmanNOSPAM.DeleteThis@neo.rr.com> wrote in message
> news:4050A210.1040809@neo.rr.com...
>
>>The best source is E-Bay. They show up there from time to time,
>>although they are not common. You might see if OCZ carries them.
>
> Also,
>
>
> I did look for OCZ modules too but they are as rare as Samsung.
>
>
>
>>try <a style='text-decoration: underline;' href="http://www.runtimecc.com," target="_blank">www.runtimecc.com,</a> they had them at one time. They are not easy
>
> to
>
>
> Thanks for the link. I see they sell Elpida (the 16 bit variety, I know)
> but isn't Elpida listed in the Asus P4T533 manual as being compatible
> too. (where is my manual?)
>
> Elpida??? (Found my manual and indeed they are mentioned there but only
> the RIMM3200 modules) I need RIMM4200 since my processors FSB is at 533
>
>
>
>>find and they are expensive (at retail, they are about $350 EACH, but
>
> on
>
>>E-Bay, they usually go for less than that). I don't believe that
>
> anyone
>
>>other than Samsung has made RIMM4200 parts in any size.
>
>
>
> OCZ has IIRC (not only 4200 but iirc 4800 too)
>
>
>
>>Note, by the way, you might try a Samsung distributor. Samsung
>
> actually
>
>>lists 1 GIG RIMM4200 modules as being in active, mass production, and
>>they also list some faster speed grades that are not, as far as I
>
> know,
>
>>supported by ANY PC chipset. However, Rambus RDRAM memory is used in
>
> a
>
>>LOT of non-PC applications (including video games, video projectors,
>>cable boxes and HDTV television sets), but usually as chips directly
>
> on
>
>>system boards rather than as the types of modules used in PC
>
> motherboards.
>
>
> Thanks for that information. Didnt know that.
>
> What do you think/know about Dane-Elec modules. I am told (!!) D-E uses
> Samsung chips on their modules; but they (D-E) aren't listed in the Asus
> manual.
> Does that mean that they won't work reliable? Or, my guess, will they
> work perfectly but they simply aren't tested by Asus.
>
> On a D-E distributor site they mention:
>
> ""
> Available modules for Asus mainboard P4T533
> Dane Elec 512 MB 32bit NON-ECC RIMM PC4200
> Partnr: RR533-32128
> ""
>
> Expensive though with EURO 350
>
> Edwin
>
><!-- ~MESSAGE_AFTER~ -->
>> Stay informed about: Asus P4T533 => where can I buy Samsung 512MB RIMM4200 modu.. 
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