Yes, ECC, unlike parity, is a technique for reducing the error rate,
with the side benefit of intercepting an error when it happens.
I am not disagreeing with Larry that integrity checks are a Good
Thing[TM], and in general are a hallmark of good engineering.
However, they are not a replacement for ECC for the purpose of driving
the failure rate down into an acceptable probability range.
It is of course a very nice thing that DRAM prices have come down into
the range where buying them in gigabyte quantities are reasonable :)
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