Why Is Apple Ram So Expensive 33HumfHSaKlA~jG9gd* 2722

Michelle Ronn wrote

And the overall system integration, noise, signal and data pattern sensitivity etc.

The factory diags are a joke compared to what is used in bringup and system test.

I'm fully aware of that. If they did, the customers would realize what we know, namely that systems ship with known data integrity issues all the time. It's a risk buttessment tradeoff where the game is predicting which stress loads which fail are likely and unlikely to appear in the general population's workloads. For example, does the average Joe need to worry about a data corruption issue that only appears when you blast memory writes as fast as possible to a bank of RAM and the pattern fill is made up only of this sequence of data:

0x00000000 0xffffffff 0x00000000 0xffffffff ....

That is but one simple example out of hundreds, but exploring carefully constructed patterns looking for switching output noise problems is an area that an experienced engineer can have a field day in, but which often times doesn't manifest itself in daily routine use.

Where that bar is set on what gets fixed and what gets ignored is what differentiates real computer vendors from Dell and the low-cost providers.

-- Lefty All of God's creatures have a place.......... .........right next to the potatoes and gravy.