Yes, but Yonah and later PM cores have an extra 4-cycle latency on the
L2 cache. Hopefully, this can be disabled at will....it comes from the
core's ability to shut down cache areas that aren't needed and flush
contents to memory.
This does necessarily hurt the performance per MHz, but it is still very
competitive.
Greg
There is no 'later' P-M core than Yonah, Merom/Conroe/Woodcrest are
ground up designs built around a performance/watt approach, hopefully
they realise that they were on to a good thing with Prescotts branch
predictor though. (seriously, that it keeps up with Northwood EVER is
testament to that.)
Technically, yes, but Merom/Conroe/Etc are still P-M "inspired". I have to
think that at least some parts of the chip were copied/pasted from P-M
designs, even if tweaked. There is a longer product development cycle on a
completely and totally new "don't even look at the designs of the old" core
than what we're seeing with these new cores.
No sense re-inventing the wheel on the parts that worked really well. :)
Greg
