...according to <A HREF="http://babelfish.altavista.com/babelfish/trurl_pagecontent?lp=ru_en&url=http://www.overclockers.ru/news/newsitem.shtml?category=1&id=1091282990" target="_new">this (babelfished) link</A>, prescott on E0 stepping @ 4.2Ghz and with 1200Mhz FSB is doable on air, albeit on an engineering sample. Looks as if, with a further revision, they could tackle 4+ Ghz speeds indeed (2005).
=<speculation>=============
I wonder if it would be too difficult for them to surprise everyone with a 1333Mhz FSB instead of a 1066Mhz one in 925XE? To ramp up DDR2-667, which is already available in timings equal to DDR2-533 (better than JEDEC specs)?... It would be great news, and would probably make a great difference in performance! And push DDR2/LGA775 much, much faster: DDR2-667 at current 4-4-4 or so timings in dual-channel in sync with 1333Mhz FSB would outperform any DDR1 config possible!
As for doing it unexpectedly, they did it once when moving from 533->667Mhz FSB; they jumped 667 and went for 800Mhz (that's a 50% increase in FSB)... And we all know what kind of performance increases Intel got then. It might even help socket-compatibility with Itanium, because itanium's new 667Mhz FSB (128bit - due next year, probably) has the same data bandwidth as a hypothetical 1333Mhz FSB... Too bad they're in trouble... So the likelyhood of them actually surprising us is about... 2.3% right now...
Feeding the execution core with more data from memory is probably a great idea. And a CPU-memory interface of 10.6GB/s would be more than enough to brag about...
It's probably more achievable than going 4Ghz this year. Multiplier 10, 3.33Ghz, could be a great prescott processor... Multiplier 11, 3.67Ghz, would make everyone respect prescott a little...
Just pure speculation, of course. It's just that an increase to 1066Mhz probably won't herald the kind of performance increases required in order to really stay in the game with AMD, if AMD sticks to their roadmap...
=</speculation>============
<i><font color=red>You never change the existing reality by fighting it. Instead, create a new model that makes the old one obsolete</font color=red> - Buckminster Fuller </i><P ID="edit"><FONT SIZE=-1><EM>Edited by Mephistopheles on 08/01/04 02:41 PM.</EM></FONT></P>
=<speculation>=============
I wonder if it would be too difficult for them to surprise everyone with a 1333Mhz FSB instead of a 1066Mhz one in 925XE? To ramp up DDR2-667, which is already available in timings equal to DDR2-533 (better than JEDEC specs)?... It would be great news, and would probably make a great difference in performance! And push DDR2/LGA775 much, much faster: DDR2-667 at current 4-4-4 or so timings in dual-channel in sync with 1333Mhz FSB would outperform any DDR1 config possible!
As for doing it unexpectedly, they did it once when moving from 533->667Mhz FSB; they jumped 667 and went for 800Mhz (that's a 50% increase in FSB)... And we all know what kind of performance increases Intel got then. It might even help socket-compatibility with Itanium, because itanium's new 667Mhz FSB (128bit - due next year, probably) has the same data bandwidth as a hypothetical 1333Mhz FSB... Too bad they're in trouble... So the likelyhood of them actually surprising us is about... 2.3% right now...
Feeding the execution core with more data from memory is probably a great idea. And a CPU-memory interface of 10.6GB/s would be more than enough to brag about...
It's probably more achievable than going 4Ghz this year. Multiplier 10, 3.33Ghz, could be a great prescott processor... Multiplier 11, 3.67Ghz, would make everyone respect prescott a little...
Just pure speculation, of course. It's just that an increase to 1066Mhz probably won't herald the kind of performance increases required in order to really stay in the game with AMD, if AMD sticks to their roadmap...
=</speculation>============
<i><font color=red>You never change the existing reality by fighting it. Instead, create a new model that makes the old one obsolete</font color=red> - Buckminster Fuller </i><P ID="edit"><FONT SIZE=-1><EM>Edited by Mephistopheles on 08/01/04 02:41 PM.</EM></FONT></P>