wingless wrote:Even if you don't manually overclock the chip, the K variant has benefits with Z370 motherboards. It can turbo higher and the MCE (multi-core enchancement) feature on the motherboard will bump all core clockspeeds for you (to safe levels).
Even on a non-K CPU Z370 has some benefits. A Gigabyte rep confirmed on reddit that MCE can force all-core turbo speeds to match the single core turbo-boost max on non-K, so an i7-8700 will be doing 4.6GHz on all cores.