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The Kaby Lake processors offer a small bump in memory bandwidth compared to the Skylake models. Both were using DDR4-3200 memory, the only difference being that we tested the 7700K and 7600K on a Z270 motherboard while the older 6700K and 6600K were tested on a Z170 board.
When it comes to cache performance, the Kaby Lake processors were again better though this was to be expected given their clock speed advantage. Take the 7700K and 6700K for example, the 7700K was 6% faster which makes sense given it's clocked between 5-7% higher.
