Replies to post #1133 on AMD strictly moderated (AMD)

[chipdesigner]

Alan, dual die Woodcrest will not be competitive. They'll choke on the FSB. And I'll guess you won't see them before Q207 at the earliest.

[wbmw]

Re:

Parameter  QC NGA     QC Opti 
 Freq        2.33Ghz    2.4 Ghz 
 Cache       8MB        4MB 
 Die size    2x135?     400 
 Memory BW   8.5GB/s    10.6 to 12.8GB/s 
 Power       80W?       140W?

Not quite, Alan. Woodcrest QC will have two FSB connections and quad FBD channels, so the combined memory bandwidth is 17GB/s, which is greater than QC Opteron, so it should scale better. I would also expect Intel to do a 2x Conroe TDP for their MCM to achieve higher frequencies, so you can expect Woodcrest QC to clock at least two 2.66GHz @ 130W. Though there may be an 80W "LV" option for blades as well.

Here is my version of the chart.

Parameter   QC NGA     QC Opti @ 90nm    QC Opti @ 65nm 
 Freq        2.66+ Ghz  2.0+ Ghz          2.6+ GHz 
 Cache       8MB        4MB               8MB 
 Die size    2x135?     400               350 
 Memory BW   17.0GB/s   10.6 to 12.8GB/s  same 
 Power       130W?      140W?             same