Thanks for the reply.

I guess I don't TOTALLY understand how VID works in
the Core2 lineup.

AFAIK there's a VID/FID table of certain divisors that say
that at each SpeedStep or ACPI performance level
the processor should run with X voltage and F frequency.

When you're running at MAXIMUM STOCK performance
the frequency will be whatever max stock frequency is
for your model of CPU, and the VID will be the maximum
it'll be for any defined state.

BUT didn't they start making the ACTUAL voltage for
EACH INDIVIDUAL CPU different within some allowed
range? I recall that AMD did that a while back.
I recall that INTEL made the MAX CASE TEMP. value
stored in the CPU *different* for *each* CPU based
on their production testing if I understand that right.

So didn't they also start making the VID change slightly
for each CPU they make depending on testing at that
time also?

Also what ELSE does VID determine except for VCORE?
If you go into your motherboard's BIOS and instead
of using AUTO you manually FORCE VCORE=1.40
and manually FORCE FSB=390MHz or
whatever, isn't it essentially ignoring VID and FID
totally at that point?

Or does VID *also* control other voltages besides VCORE
e.g. some kind of I/O power supply voltage or whatever
else that the VRM might still be supplying at values
depending on VID in the table corresponding to
"full power" speed step even when you've manually
overridden VCORE?

So if I'm guessing right (please correct me if I'm wrong!),
then VID listed in the software just doesn't matter
if you've set VCORE manually?

Also IF VID is actually potentially different for each
and every CPU out there, do we typically see different
values of VID even for peoples different chips of the
same stepping? e.g. do ALL the B3 chips out there have
the SAME VID/FID table or not?

It seems like a lower VID table entry for any given
FID could just mean "yes, we realize that 99.999% of
all CPUs we make can overclock at least 10% on stock
voltage, and conversely they can mostly all run at
stock speed if they're undervolted by 10%, so we'll
just lower the VID voltage by a few percent for
any given FID step and guarantee that they'll work
by quality control so that everyone can save some
noise/power". In that case, there may be no real technical
engineering change that MADE the chip run faster at
lower power, because in fact we all know that they could
be undervolted/overclocked at least a little even with B3.


Quote Originally Posted by dinos22 View Post
you will find that the binning voltage was reduced

VID value you see in people's coretemp screenshots