Hd4000 gets glitchy when i overclock cpu...

Is there something i need to do to the igpu or should i be using a discrete gpu when overclocking the cpu? I running a i7 3770k on a gigabyte GA-Z77X-UP TH.
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  1. never mind, I was running prime 95 and trying to play assassins creed at same time. Sorry ya, I wasn't clear on what prime 95 actually did.
  2. There is absolutely no need for the IGP for that kind of a processor and workload (gaming) unless if you have a software that can switch to IGP under idle load and to the dedicated under heavy load.

    Otherwise, disable it and use the dedicated GPU.
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