This question already has an answer here:
On Stack Overflow a user asked the following question: OpenCL slower than OpenGL
As noted by user gpu, this exact question has been asked on Nvidia's forums as well: http://forums.nvidia.com/index.php?showtopic=225898
He goes on to state "Vote to close". Not taking into account the quality of this particular question, I would say that this is a bit much. The OP is, in my opinion, fully within his right to ask the same question on a different Q&A-site or forum if he wishes to do so.
So my question is: If the question asked on SO is a duplicate of a question asked on a different (non-SE/SO) site, does that warrant a vote to close (as duplicate)?
I would say it does not, but would like to hear your thoughts on this.