Linked by David Adams on Wed 4th Aug 2010 18:28 UTC, submitted by estherschindler
Hardware, Embedded Systems Anyone contemplating a new computer purchase (for personal use or business) is confronted with new (and confusing) hardware choices. Intel and AMD have done their best to differentiate the x86 architecture as much as possible while retaining compatibility between the two CPUs, but the differences between the two are growing. One key differentiator is hyperthreading; Intel does it, AMD does not. This article explains what that really means, with particular attention to the way different server OSes take advantage (or don't). Plenty of meaty tech stuff.
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So, what are the disadvantages of
A) two dual core cpus
B) one quad core cpu?

Which CPUs? How much heat do they generate? Which caches are shared between cores? Would "two dual core CPUs" be ccNUMA (e.g. Opteron)? If it is ccNUMA does that mean you get 2 memory controllers and twice as much RAM bandwidth? What software would it run - is the software effected by caching and/or memory bandwidth (or just raw processing speed)? Does the software optimise memory allocation for ccNUMA?

What about prices (dual-socket motherboards are typically more expensive)?


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