Re: Dual Xeon's - NUMA or SMP - I think SMP is faster...?
Nice screenshots in post 1!
Given the close passmark ratings, and the fact that your temps are much more low on SMP, I'd just run SMP on the box, unless there is some specific use case (like say video editing) where a particular well used piece of software shows a notable (10%+?) performance delta on NUMA vs SMP.
I think you got a very good answer here too from Smoked Trout:
Basically, unless you are running a server with highly loaded NUMA aware tasks, you're fine on either while || and probably best going for the cooler one, efficiency wise.
However, it's going to depend on what software you are using. Most software isn't NUMA aware, but most threads/processes don't allocate enough memory for it to become an issue. For small memory loads NUMA will be faster due to reduced latency. Start allocating a bunch of memory used by multiple threads and NUMA can cause penalties if the software was not written with NUMA in mind.