Yeah, those vulnerabilities sucked... Although, I have to say, I don't notice too much impact on day to day computing... Even while gaming. On the other hand, I'm not tracking any stats or fps so I wouldn't know if I was taking a hit!

I don't bother with overcooking either, as stock is plenty good enough these days at the mid to high end. However, undervolts are definitely worth it in a laptop, when a game is running you can start to bump in the thermal constraints!