Mixing RAM on P4T533-C

  • Thread starter Thread starter Peter Urbanek
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Peter Urbanek

Does somebody have experience with mixing different memory types on the Asus
P4T533-C mainboard? Is it possible to mix non-ecc with ecc RDRAM or to mix
RDRAM from Corsair with some from Kingston or Samsung for example?

Thanks for any help!

Peter Urbanek
(Germany)
 
Are you sure about this? I have the chance to get 2 x 256 MB ECC RAM
(Samsung) for a good price. The seller has also some Corsair-RAM (non-ECC)
but to avoid problems I would prefer to add the ECC-RAM to my system which
has already Kingston-RAM (non-ECC) installed (manufactured by Samsung).

Peter
 
"Peter Urbanek" said:
Are you sure about this? I have the chance to get 2 x 256 MB ECC RAM
(Samsung) for a good price. The seller has also some Corsair-RAM (non-ECC)
but to avoid problems I would prefer to add the ECC-RAM to my system which
has already Kingston-RAM (non-ECC) installed (manufactured by Samsung).

Peter
Click to expand...

http://www.rambus.com/products/rdram/rdram_faq.aspx

"Q: Can I mix RIMM modules of different frequencies, or ECC/non-ECC
into my system?

A: When mixing module frequency or error-correction code (ECC),
most RDRAM systems will default to lowest frequency among the
inserted modules. In addition, if any of the modules do not
support ECC, then most system disables the ECC function."

Skimpy Asus FAQ page:
http://support.asus.com.tw/faq/faq_...5-BB47-8CAB-0C4A-2DCBE8DB7BCC&SLanguage=en-us

Recommended modules at bottom of page:
http://www.asus.com/prog/spec.asp?m=p4t533-c

Sample of an End-of-life module spec page:
http://www.samsung.com/Products/Sem...dule/NormalRIMM/MR16R162GDF0/MR16R162GDF0.htm

End-of-life module SPD spec mentions chip type K4R571669D
http://www.samsung.com/Products/Sem...RIMM/MR16R162GDF0/spd_x16rimm_256mb_d-die.pdf

Some device speed info (sometimes an issue when shopping for modules):
http://www.samsung.com/Products/Semiconductor/DRAM/TechnicalInfo/product guide_may_2003.pdf


Rambus chip info page:
http://www.samsung.com/Products/Sem...AMcomponent/256Mbit/K4R571669D/K4R571669D.htm

Datasheet for a K4R571669D chip. I was hoping to find the packet
format here, to answer the question as to whether the nineth data
bit is independent, so ECC continuity was not required.
http://www.samsung.com/Products/Sem...6Mbit/K4R571669D/ds_k4rxxxx69d_long_rev14.pdf

How RAMBUS works - but still no pictures of data packets:
http://arstechnica.com/paedia/r/ram_guide/ram_guide.part3-3.html

Finally, advice from a PC company on mixing RIMMs. This
seems like reasonable advice, even if I cannot trace down
all the tech info.

http://www.premiopc.com/discontinued/support/faq/850r_socket423.html

"For example, in bank 0 you can have 2 x 64MB PC800 ECC, and in
bank 1 you can use 2 x 128MB PC600 non-ECC."

HTH,
Paul
 
Wow. That's what I call lot of information. Thank you! I've just ordered the
ECC-modules.

Greets

Peter
 
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