Quote Originally Posted by truehighroller View Post
I was wondering the same thing. I think some one here will tell us but, I think it might be a little lower actually.. Correct me of wrong of course.
Quote Originally Posted by DemonEyez View Post
I was wondering, for CPU GTL Ref voltage the ideal range is between 0.80v and 1.005v as was stated earlier in this topic.
But what's the ideal range for the NB GTL Ref voltage? I get the impression that it's lower than CPU GTL Ref voltage because most of the time is has to be set with a (much) lower multplier (e.g. 65/65/63 or 63/63/58) Is this assumption correct?
[QUOTE=mikeyakame;3353927]ideal nb gtlref for standard Intel values is 0.666x vTT, but there is an extra value for the NB called FSB_SWING which is 0.25x vTT nominal, this is set by the manufacturer and it determines the distance for logical 0 / 1 from gtl ref voltage. it's the swing distance for a switched voltage. It may be that this is based off a divider from the GTLREF NB voltage which has already been reduced by a set of 1% resistors, it would make sense to do something along these lines as too high a vTT would cause too large swing between ground and power, perhaps thats the reason why we use smaller NB GTLREF multipliers or values.