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difference between non-parity and ecc RAM?

Scruff · 2002-01-21 17:23:58

can anyone tell me whats the difference between a stick of ram described as "non-parity" and one thats "with ECC" there's a few pound difference between them but what does that mean performance wise in a pc?

21-01-2002 6:23pm

#1

Scruff

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can anyone tell me whats the difference between a stick of ram described as "non-parity" and one thats "with ECC"

there's a few pound difference between them but what does that mean performance wise in a pc?

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#2 21-01-2002 7:31pm

Kali

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non-parity is just your standard ram chip, with no error correction... parity means it has an extra bit for every 8 bits used for parity checking.. meaning individual bytes can be checked to see if they are right or not.
ecc is a further improvement on this, providing further levels of error correction (hence the name).. usually only used in servers anyway so I wouldn't plum for the extra cost, afaik the bios has to support it anyway (honestly haven't a clue if recent boards have this or not!)... also its usually not a good idea to mix ram types... if you have standard ram buy standard ram pc100/pc133 usually.

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