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Pastimes : Dream Machine ( Build your own PC )

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To: GrnArrow who wrote (92)	2/3/1998 12:46:00 AM
From: Zeuspaul	of 14778

ECC RAM ECC RAM is an option on many types of RAM. For example you can get ECC SDRAM or ECC EDO DRAM. Your motherboard must support ECC or at minimum the error correction will not work. Parity is another form of error checking. It is possible to use two parity RAM chips in pairs to get the same results as ECC. ECC will have the effect of speeding up your system if you consider that you will have less of a chance of a lock-up. From the Advantage memory site: (I can't figure out how to link you directly to the page but if you click on support and then half way down the page click on Frequently Asked Questions you will be able to read more about it.) advantagememory.com Excerpts >>'ECC' or Error Checking and Correcting permits error detection as well as correction of certain errors. Typically, ECC can detect single and dual bit errors, and can correct single bit errors. << >>Using parity SIMMs in matched pairs is the most effective use of a 64-bit wide memory bus and the check-bits present on parity SIMMs. This yields error detection and correction as capable and reliable as any other form of ECC commonly available.<< >>On most systems, a parity error detection results in the computer system freezing entirely and the displaying of a 'Parity Error' message on the screen. The system must then be restarted.<< >>Our feeling is that given the instability of modern computer Operating Systems and massive applications, and the interactivity of memory and hard drive, detecting every failure is critical.<< >>Essentially, non-parity is like driving a car with all the warning lights disconnected. It's probably running just fine and has the correct amount of oil and coolant. But, what if the oil pump failed?<< >>Defective non-parity could be damaging every file stored on your hard drive, and you may never know what caused the damage.<< Onward Zeuspaul

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