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Why do modules test good on the SIMCHECK, but fail in a PC?

April 26, 2017fail good modules pc simcheck Test

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Why do modules test good on the SIMCHECK, but fail in a PC?

1 Answer

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10 Posted

A. The PC may require true parity 9-bit SIMMS, and the tested module is a 8-bit SIMM that uses logic parity. Simcheck may not explicitly fail a chip, but an interpretation of the readings may indicate a suspect or bad chip.