While there is no difference between the integrated graphics on these types of CPUs, you also need to consider if what you're doing is going to need a lot of CPU power as well. Because even if the GPUs are the same, not having a strong enough CPU can cause issues on its own.
However, there are many things that go into that. As mentioned by another member, your will have bottlenecks by using onboard GPU with an i7 processor.
What exactly are you trying to find out? What are we working with here? With more information we can share more opinions about choices and what to do.
I was just wondering if HD4600 in both i3 and i7 is the same because I have an i3 and my brother has an i7 so I wonder if we can play the same game, a decent game that HD4600 can handle xD