[OT] Re: Is this a sign of memory going bad?

Chuck Swiger cswiger at mac.com
Sun Nov 28 16:00:49 PST 2004


Adam Fabian wrote:
> Does parity RAM reliably report on it's reliability?

Nope.  At least if you're talking about parity memory on FPM or EDO DRAM, 
which only has a fifty-fifty chance of even noticing an error, and a 1/9 
(~11%) chance of reporting an error with the parity bit itself.

Modern SDRAM and DDR memory with ECC will reliably detect and correct 
single-bit errors, will reliably detect two-bit errors, and even has a very 
good shot (~90+%?) of detecting larger multibit errors.

-- 
-Chuck



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