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# of OpenCL devices on 2012 Macbook pro

This doesn't answer your question, (and doesn't need downvoting please) but hopefully will help you work out what you have actually got installed. I would have posted it as a comment, but the formatting there would be useless.

If you want a legible list of your installed CPU and Graphics equipment, the following command does it nicely:

system_profiler | awk '/^Hardware/ ||
/^Graphics/{p=1;print;next} /^[A-Za-z]/{p=0} p'


    AMD Radeon HD 6970M:

      Chipset Model: AMD Radeon HD 6970M
      Type: GPU
      Bus: PCIe
      PCIe Lane Width: x16
      VRAM (Total): 1024 MB
      Vendor: ATI (0x1002)
      Device ID: 0x6720
      Revision ID: 0x0000
      ROM Revision: 113-C2960H-203
      EFI Driver Version: 01.00.560
          Display Type: LCD
          Resolution: 2560 x 1440
          Pixel Depth: 32-Bit Color (ARGB8888)
          Main Display: Yes
          Mirror: Off
          Online: Yes
          Built-In: Yes


    Hardware Overview:

      Model Name: iMac
      Model Identifier: iMac12,2
      Processor Name: Intel Core i7
      Processor Speed: 3.4 GHz
      Number of Processors: 1
      Total Number of Cores: 4
      L2 Cache (per Core): 256 KB
      L3 Cache: 8 MB
      Memory: 16 GB
      Boot ROM Version: IM121.0047.B1F
      SMC Version (system): 1.72f2
      Serial Number (system): DGKH90PWDHJW
      Hardware UUID: 1025AC04-9F8E-5342-9EF4-XXXXXXXXXXXXX

And also this for the actual CPU details:

sysctl -a | grep "brand_string"
machdep.cpu.brand_string: Intel(R) Core(TM) i7-2600 CPU @ 3.40GHz

And this for OpenCL version:

system_profiler | grep -A 11 OpenCL:

  Version: 2.3.59
  Obtained from: Apple
  Last Modified: 19/09/2014 10:28
  Kind: Intel
  64-Bit (Intel): Yes
  Signed by: Software Signing, Apple Code Signing Certification Authority,
Apple Root CA
  Get Info String: 2.3.59, Copyright 2008-2013 Apple Inc.
  Location: /System/Library/Frameworks/OpenCL.framework
  Private: No

P.S. If there is a better way to provide additonal, useful information (which is not really a proper answer) on SO than this, please let me know.

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