Thanks for joining the community.
I understand you would like information about processors you can over clock.
Please bear in mind Intel does not provide any assistance for over clocking Intel products. However, Intel has released processor with “K” letter designation; they were designed for over lockers. The processor is unlocked, this means you can change stock settings if your motherboard BIOS provides information to change configuration of the processor.
Again, only “K” processor versions are unlocked. Here is an example for an unlocked processor: http://ark.intel.com/products/75123/Intel-Core-i7-4770K-Processor-8M-Cache-up-to-3_90-GHz