Dual core or 2 single cores?

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crussi

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Aug 5, 2014
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I'm building a workstation (5-6k budget). I'll be using it in large part for single-threaded processing, but will be running multiple instances of the process. My question is 'would a Dual Xeon with 6 cores would outperform a Xeon with 12 cores?' Thanks.
 
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If you care to manage which instance runs on which CPU and manage memory so each instance's data is on the CPU's local memory then the dual 6-cores should be faster since each instance shares system memory bandwidth with half as many others. On top of that, the 6-cores Xeons would likely be clocked higher than the single 12-cores.

The single 12-cores would make more sense in scenarios that rely more heavily on shared memory and inter-process communications.
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Titan
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May 18, 2007
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If you care to manage which instance runs on which CPU and manage memory so each instance's data is on the CPU's local memory then the dual 6-cores should be faster since each instance shares system memory bandwidth with half as many others. On top of that, the 6-cores Xeons would likely be clocked higher than the single 12-cores.

The single 12-cores would make more sense in scenarios that rely more heavily on shared memory and inter-process communications.
 
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