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Fisheagle
04-28-2001, 09:00 AM
I have posted this question before but I am still not sure of the answer.

Can I use ECC DDR SDRAM in a mobo that does not support ECC. I don't care about the functionality of the ECC capability all I want to know is if the ECC memory will function as Non-Parity in a mobo that does not support ECC.

Why you ask would I want to do such a thing... let me explain:

I have alread purchased two sticks of 256MB PC2100 unbuffered/non-parity DDR-SDRAM from Crucial ($103 each w/free shipping... how could I not buy it at that price)

But I read somewhere that the AMD 760MP chipset will require ECC memory.

I bought the memory for a "Dualie" set up, when the AMD 760 MP is available.

I already have an RMA from Crucial to replace the Non-Parity with ECC.

My question is:
Will ECC memory work in a mobo that does not support ECC. If I exhange the Non-Parity memory for the ECC will I have to purchase a mobo that supports ECC or will I be able to use the ECC in a mobo that does not support ECC.

Of course I realize that if a mobo does not support ECC then I will not benefit by having that advanced capability in the memory. That's OK! All I want to know is will I be able to use ECC memory in a mobo that does not support.

i.e. Should I exchange the non-parity memory for ECC memory or stay with the former?

I know that the ECC is suposed to be a bit slower and is a bit more expensive but that's OK too.

Sorry about the convoluted nature of this post but my limited brain seams to be having trouble ecplaining my delemma.

Please advise
Thanks

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Tomorrow will be here yesterday!

tjaymadison
04-28-2001, 09:37 AM
Short answer = No! http://www.PCGuide.com/ubb/biggrin.gif First off, the little circuit board is notched differently, so the two types are physically incompatible and not interchangeable. In single-CPU desktop systems ECC is handled by the BIOS/chipset. The best advice is the old standby -- Read the manual! http://www.PCGuide.com/ubb/wink.gif Or check the FAQ's at the mobo mfr's web site. Use The PC Guide for some background. If you had done a search on "ECC", you would have found this (http://pcguide.com/ref/ram/packParity-c.html). Happy Hunting!

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"When I nod my head, hit it with the hammer."
-- (Moe, holding nail, to Curly, holding hammer)

Fisheagle
04-28-2001, 10:41 AM
Thanks for responding.

I read the following at your "this" place.

"Parity memory will usually work in a non-parity system; the extra parity bits are ignored. However, non-parity memory will not work in a parity system."

I am still confused http://www.PCGuide.com/ubb/confused.gif

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Tomorrow will be here yesterday!

tjaymadison
04-28-2001, 11:41 AM
ECC, parity and buffering are completely different and separate concepts/features, and although they may be used together in various combinations, they are not equivalent. For some background references, go here (http://kingston.com/tools/umg/newumg05b.asp), or for the "full monty" go here (http://kingston.com/tools/umg/default.asp). I still say the manual and/or mfr FAQ's are the final authority, but you seem reluctant to investigate them. To "idiot-proof" http://www.PCGuide.com/ubb/biggrin.gif the whole process, go here (http://ec.kingston.com/ecom/kepler/mfrmod_Bod.asp).

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"When I nod my head, hit it with the hammer."
-- (Moe, holding nail, to Curly, holding hammer)

Fisheagle
04-28-2001, 12:10 PM
Thanks again,

There are no Socket A Dual CPU (AMD 760MP) mobos yet so I can't check.

My problem is that I want to take advantage of extremely low prices and no shipping charges for DDR memory at Crucial.

I am trying to figure out in advance what would probably be the best bet for use in a furture dual mobo, ECC or Non-Parity?

I am only asking you to see into the future so I understand your frustration with me.

Your patience is probably wearing thin, so I will understand if I don't get a response.

See Ya!



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Tomorrow will be here yesterday!

Randy_tx
04-28-2001, 12:30 PM
If you think DDR prices are low a Crucial right now.......wait about 3-6 weeks when the bottom falls out of the price for that memory...I wouldnt worry about RAM prices down the road.......they will stay low as long a demand is low.....which it will be for at least 4 more months...IMO.

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Will XP save Me ?

bassvax
04-28-2001, 12:36 PM
Delete me...please http://www.PCGuide.com/ubb/smile.gif
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One of these days I'm gonna cut you into little pieces...

[This message has been edited by bassvax (edited 04-28-2001).]

Fisheagle
04-28-2001, 12:54 PM
Thanks Randy-tx,

256MB PC2100 unbuffered/non-parity DDR-SDRAM from Crucial for $103 each w/free shipping! It's hard (scary) to believe it will get cheaper than this.

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Tomorrow will be here yesterday!

Fisheagle
04-28-2001, 01:01 PM
I justt got this answer from Corsair.

Enjoy.
http://forumboard.net/1279/messages/2130.html

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Tomorrow will be here yesterday!

Fisheagle
04-28-2001, 01:06 PM
Hey! Bassvax,

What's all that about??????

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Tomorrow will be here yesterday!

bassvax
04-28-2001, 02:16 PM
It's a request to the forum moderator to delete my post.

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One of these days I'm gonna cut you into little pieces...

Fisheagle
04-28-2001, 03:15 PM
Why?

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Tomorrow will be here yesterday!