[H]ard|OCP had an opportunity to try a different Coffee Lake CPU than Ryan, who provided our initial results on the i7-8700K and Core i5-8400.  In this review, they took a Core i5-8600K and immediately overclocked the chip to 5GHz so they could directly compare Coffee Lake to a Kaby Lake i5-7600K clock for clock, if not for core.  The tests show both CPUs at 5GHz locked clocks, 3600MHz RAM clocks with the exact same timings of 18-19-19-39@2T; they do not show a major improvement in performance between the two chips although it is there.  What it does illustrate is that the performance increased you see on Coffee Lake are from higher clock speeds, which are a good thing.  There will be many who feel the lack of IPC improvement speaks poorly of the new chipset and incompatible socket and they do have a point.   There is fun for AMD fans in this review as well, the Ryzen 7 takes top spot even when running at a mere 4GHz, so start with this one and then take a gander through the rest.

"If you were waiting for huge IPC gains out of the new Coffee Lake CPU from Intel, you might be waiting for a very long time. We take the Intel Coffee Lake Core i5-8600K CPU and match it up GHz to GHz with the Intel Core i5-7600K Kaby Lake processor. And we throw in a Ryzen 7 at 4GHz just for fun."

Here are some more Processor articles from around the web:

Processors