I know the difference between bit and byte, I was trying to type out the answer before I had to leave so I was trying to get it out quick. A lot of the board manufacturers have been putting 10 on both M.2 and Express. Probably so they cover their own butts or it was just the very early models and it was a mistake. Very unlikely you are going to achieve that level of performance anyways.
Many CPUs from even two years ago are running just fine without any sort of overclocking while gaming. If you buy top tier now it normally lasts for a few years before it may start to get bogged down by software. At that point, there will probably be a few more chipsets out that offer a compelling reason to upgrade so a lot of time you really do not even need to OC unless you feel the need to or want to do it for fun.
Sure, you may see an improvement in benchmarks but if you are not rendering, you normally do not see much of an improvement in real world usage.
I agree with Ksham, most of the time you are going to be limited by your CPU before you are limited by the motherboard. Just pick a chipset that you wish to get and then the features that you wish to have. Most of them overclock just fine unless you are wanting to push crazy limits.
If you are at a university, they are probably using mixed mode so that all of the students devices can connect whether they have wireless "n," "g," or one of the other types. AC is still pretty new and expensive at the Enterprise level to be rolling out on a University level scale.
If you wanted to go with a locked CPU, you could always go with a Xeon which has the onboard video disabled. Many times you can pick a comparable version to the 4770k up for cheaper. Also, games are starting to make use of more threads / core; however, it will probably still be awhile before makers start to develop with that clearly in mind. If you edit or render video, then I would recommend an i7 as software of that type normally supports multiple cores / threads. If you plan to use it purely for gaming, I would stick with a high tier i5 such as the 4690 or the 4690k.