7600 or 7600k, which one is better in performance if I don't overclock the 7600k? I know 7600k has 300Mhz more base clock speed and 100Mhz more turbo speed but does it really make a difference?
It means it is designed to generate 40% more heat (under load), so definitely better to avoid. Ofc you'll need that more benevolent envelope for higher clocked/OC models, but getting it for 300MHz more is way too much.
It's not a difference you would notice in most scenarios (8%). If you don't plan to overclock, it's imho not worth slightly increased cost and +40% TDP. Bear in mind "K" model also doesn't come with cooler so you'll have to get one extra (compared to non-K version).
It means it is designed to generate 40% more heat (under load), so definitely better to avoid. Ofc you'll need that more benevolent envelope for higher clocked/OC models, but getting it for 300MHz more is way too much.