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Old December 9th 18, 06:36 PM posted to alt.comp.hardware.pc-homebuilt
Paul[_28_]
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Posts: 1,467
Default is new memory incompatible? Why?

Boris wrote:


This is definitely weird. Do you have the owner's manual? If so, what
does it say about adding memory, if anything?


The 1.35V versus 1.5V issue isn't normally addressed in
a motherboard manual. "You, the system builder" are
"supposed to know this stuff". Etc.

That's how they treat you.

The memory upgrade section of the manual is usually
pretty spartan, and copies the "Intel comments" about
population. But doesn't always address the consequences
of doing things a particular way. For example,
mixing "overclocker memory" and "server memory"
in the same machine, may make it hard to adjust
Vdimm to a functional value. The better you match
the "class" of the components, the less hair you'll
lose while installing, tuning, and testing them.

And the reason this happens, is "overclocker memory"
is outside the JEDEC spec. If every component in the
PC followed JEDEC, there'd be no hair loss. It's
probably because of JEDEC, that 1.35V memory *has to*
work in 1.5V slots.

*******

After the drama of getting the machine to start,
now begins the testing. This isn't the only test
you can run, but it's intended to weed out duds
in the retailer returns interval (15 day return).

(Downloads 50% down the page)

http://www.memtest.org/

Paul