Re: CCL:Summary Opteron vs Nocona

> > However, there's one point about opterons. AMD just announced
 dual-core cpus,
 > > which should perform far better than the single-core shipped now.
 for cache-friendly applications that don't mind somewhat lower clocks.
 > whatever time period of choice :-) I don't think it in general is worth
 > waiting for the next family of CPU's. Instead, get what is available when
 it depends on how advantageous the change is.  for instance, if you are
 heat or footprint-constrained in your machineroom, AMD's dual-core might
 well be worth waiting for, since they are compact and noticably cooler
 than two single-core chips.
 > price/performance ratio of dual cores would be, at least in the beginning,
 > when counting in all the costs of motherboards etc.
 if you have cache-friendly code, dual-core is very effective.
 other components are basically the same, therefore no price premium.
 AFAIKT, AMD hasn't announced DC pricing yet:
 http://www.amd.com/us-en/Weblets/0,,7832_8366_609,00.html
 the premium for 8xx chips is noticably higher than twice the
 price of the same-clock single-core.  but of course you save
 with fewer motherboards, chassis, etc.
 > Also, after the dual core chips ship, there will be a lag before proper
 > drivers/kernel patches for Linux appear. It took a year after release
 no, DC is such a minor architectural change that it's already supported.
 regards, mark hahn.
 sharcnet/mcmaster