Yeah don't worry about overclocking, you wont gain much, even if you could, and if you could you might shorten its lifespan. Not worth it imo. You can overclock memory on your mobo which does affect cpu performance in many cases, maybe look down that alley if you want.
I just personally wouldn't take it too far since the IMC, part of the CPU does have to work harder to keep up with it. You can increase trefi, which is the amount of time between ram refreshes, and whenever ram is refreshing, its not working for you, so this improves memory performance a lot and should have no affect on the lifespan of the cpu that I'm aware of. I would use it in moderation though - as going too high ( some people go into hundreds of thousands - not necessary!!) can cause corruption of data in the ram and therefore result in a corrupted windows, especially when mixed with heat.
Not sure if you are on ddr4 or ddr5 but I'm on ddr5 and I like 40,000 at 6000 M/ts, it captures most of the benefit ( as there are sharp diminishing returns) and doesn't introduce much risk, and there are huge improvements to be had, to memory performance, and therefore CPU performance if its accessing memory. So thats one low risk option for you. Just as always, make sure to backup your important files just incase.
Trefi can be found where your memory timings are.
EDIT: I was going to say you might be able to undervolt for more performance as ucode 0x123 and later finally allowed B boards to turn cep off allowing undervolting via the loadine ( not the best way to undervolt, but a way), but I just looked it up and unfortunately it doesn't apply to 12th gen, sorry. You can undervolt via loadline with CEP on a little bit, but if you go too far it will give you a nice big performance penalty, so doing this is more for saving power/controlling heat and less for increasing performance.
That would leave the only possible option to undervolt, being going to ucode 104 ( an option your board does have I believe) but 104 is old and buggy and specifically called out on gamer's nexus for being so. It was also the ucode my first 14700kf died on. It is also happens to be the last ucode that allowed b boards to apply vid offsets which is why the option remains. 12th gen isn't as um, as vulnerable as RL, so maybe you can get away with doing this. But I wouldn't, even on 12th gen. I've had nothing but problems when trying to run on 104, though tbf I was always on RL.
