Quite good, one of the best for games currently. Top 3 right now are 8700k, 9700k and 9900k, and you can include 8086k (if you can find it), but it will be around $600, and who wants that when you got 9900k for ~$510 I had 8700k fail on me, so I replaced it with 9700k, 8700k was hotter, but needed...

I haven't produced any benchmarking data, but, as you would expect, I could see a marked improvement in performance inside and outside of games after upgrading to this i7 8700K from an i5 6400, though obviously this was also along with a motherboard upgrade. I have no complaints so far.

I've overclocked mine to 5200mhz @ 1.350v which beats the Ryzen 1800X 8 core on both single and multi threaded apps comfortably!! And its only a 6 core! Fastest most insane CPU I've ever owned. I thought my 7700K was fast but this is on another level.

Even though its more than a year old this processor (K version) is a beast. If you get a good cooler (such as Noctua d-15s) the 8700k stays cool just fine and even with a mild overclock (4.7 or 4.8) it outperforms my high expectations.

Intel had to push the core count on its mainstream processors with Coffee Lake . This was inevitable, and frankly, would have been unthinkable had chip maker introduced yet another generation of quad-core CPUs in light of how AMD has redrawn the battle lines with Ryzen and Threadripper .

Hyper-threading overtakes Ryzen; Low-impact overclocking

Overclocking only on K models; Requires new motherboard

I managed to Overclock mine to 5015.9MHz @1.224V. It plays game like a boss and is great for multitasking and productivity alike.

Amazing CPU. To take full advantage you will need to delid though. 5ghz over all 6 cores is easily obtainable.

Good quality product, this processor is the right choose for high end PC if you don't want to spend a fortune.

Intel's new Core i7 8700K manages to impress. Strictly speaking though as you have seen, if you look at IPC at 3500 MHz then Coffee Lake certainly isn't faster compared to the previous gen product. However, Intel benefits greatly from the fact that they can reach high clock frequencies.

For years, Intel has been the establishment of PC enthusiasts. To stretch the current British political metaphor, it was ‘many cores for the few' people who had enough cash to buy a high-end processor and ultra-expensive motherboard.

Huge six-core power; Highly overclockable; Stable and easy-to-use platform; Mighty single-core speeds and gaming performance; Cheaper than Ryzen 7 1800X

Doesn't compete with Ryzen 1700 or 1700X on price; Cheaper 8-core Ryzens offer similar multi-core performance; Not compatible with older motherboards