I happen to have a family of three Dell machines in the house - a new arrival XPS 9360, an old beast Precision M4800 and an "aspiring" Inspirion 5667.

The new XPS 9360 is equipped with the Killer 1535 wifi card while the old models came with Intel cards. I've run tens of speed tests and it's certain for me that the Killer card's performance is constantly 20-25% lower than those of Intel's cards (all cards with the newest drivers available).

Has anyone done similar tests or come across Killer performance issues? There are lots of similar threads on Killer cards, and they are generally not really appreciated, but I'm seeking their comparison vs. Intel cards.