Which i core 7should I choose for a laptop for running multiple VMs

I am planning to get a new laptop (dell precision) 32 GB Ram.  Would someone let me know what i core 7 is the best for multi tasking as well as running multiple VMs

Intel® Core™ i7-3940XM Extreme Edition processor (3.0GHz, 8M cache, Upgradable to Intel® vPro™)
      
3rd Gen Intel® Core™ i7-3840QM Processor (2.8GHz, 8M cache, Upgradable to Intel® vPro™ technology)
      
3rd Gen Intel® Core™ i7-3740QM Processor (2.7GHz, 6M cache, Upgradable to Intel® vPro™ technology)
            
Intel Core™ i7-3540M processor (Dual Core 3.00GHz, 3.7GHz Turbo, 4M cache, 35W)
tommym121Asked:
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kadafitcdCommented:
You yourself listed them in order of best to worst out of the bunch...

1) i7-3940XM (best)
2) i7-3840QM
3) i7-3740QM
4) i7-3540M (worst out of this bunch)

Although 1 and 2 are fairly close and for the money difference you might want to go with 2.  It also uses less power which is good for a Laptop.

Here is a comparison between them.
http://www.cpu-world.com/Compare/862/Intel_Core_i7_Mobile_Extreme_Edition_i7-3940XM_vs_Intel_Core_i7_Mobile_i7-3840QM_%28PGA%29.html
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tommym121Author Commented:
thanks
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