Unable to decide 2nd or 3rd gen

So I'm about 5 days away from ordering my new parts and now I'm having doubts about my CPU. My question is do I go with the i5 3570k or the i5 2500k? Things to note would be a) I'm also buying the CM Hyper 212 Evo, b) I would overclock to about 4.2Ghz (This is achievable using stock voltages, right?) and I'd like to stay below.. 70C :D
Basically, is it possible for me to OC to 4.2 using stock voltages without seeing any temperatures over 70C? Thanks!
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  1. While all processors are a little different most likely with the Intel® Core™ i5-3570K you are going to mid 70c at 4.2GHz based on my experience. While you may have lower temperatures with the Intel Core i5-2500K you would see lower real performance with it due to IPC improvements on the Intel Core i5-3570K.
  2. So, for 'futureproof-ness', it would be wiser to go with Ivybridge. However, if I manage to use stock voltages and get a mild overclock, wouldn't that mean that temperatures would be around mid 60s to mid 70s? (I may have just rephrased what you just said, it's been a long day :D ) On a side note, Ivybridge can go up to around 80/85c before you should start worrying, right? Especially with a HSF, they should not be going over 76c -ish, am I right in thinking that?
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