Can anyone answer this question?(Preferrably a reviewer)

[IntelUser2000]

http://www.anandtech.com/news/shownews.html?i=15766&t=an

The top is a link to Intel's 90nm process. It states 52Mbit cache(6.5MB) has total of 330 million transistors(and it will be used for Prescott). Okay, some of you know that Prescott has 125 million transistors. So Prescott has (125 million) - (330 million/6.5)
=approximately 74 million for other things like logic.

My question is: Why did Anand say that majority of the increase in transistors in Prescott is cache(Link here: http://www.anandtech.com/IT/showdoc.html?i=1869&p=2)

It should be logic that increased most.

 

[jiffylube1024]

What Anand meant was that in the transition from Northwood to Prescott, the factor contributing to the largest transistor increase would be the increase in cache: from 512K to 1MB. The logic section itself of Northwood hasn't changed too much (although there have been optimizations/changes, apparently).

The numbers don't seem to add up, I know. Northwood has only 55 million transistors, while Prescott has ~125 million, meanwhile according to that 52mbit cache, 1MB of that 90nm cache takes only (330 / 6.5) = ~51 million transistors.

In that older link it says that Prescott will only have ~100 million transistors, while in the new one it says 125 million. So, perhaps they needed more transistors for cache after all.

One way or another, Intel is having problems with Prescott...

 

[Duvie]

Or taken another way this is the sign the "prescott team" has put in a special feature that may be reviewed at time of release....This was confirmed for me by an Intel emplyee who says shop talk around Intel has been of some major feature that only the team knows about and will be quite a big surprise....

I can't speculate what that is so I wont...The descrepancies in transistors points at something extra since we know overall the architecture has not change that drastically to throw the older patterns out the window...


I was also told the prescott was already into its fourth stepping so I think the problems of heat and current leakage were real.