Frequently criticized
Many commenters felt the 9700K and 9900K cost much more than Ryzen chips like the 2700X for only marginal real-world gaming gains, especially at 1440p and 4K where GPUs are the bottleneck.
Frequently criticized
Several commenters hit very high temps while overclocking, including 91C and even 100C at 5.0GHz, with one explaining the taller chip die increases heat travel distance to the spreader.
Frequently criticized
Users report power consumption spiking dramatically under overclock, with one citing 300 watts and another measuring 78W at 4GHz versus far lower draw on the 8700K or 9600K. This made undervolting difficult or unstable for some.
Frequently criticized
A couple of users found the older 8700K matched or beat the 9700K in certain workloads and power efficiency, questioning the point of the upgrade.
Frequently criticized
One long-time user is upgrading to a dual-socket Epyc system because the 9700K can't handle running local AI models, games, and server tasks simultaneously; others note newer games like BF6 are starting to strain it.
Generally negative
One user noticed the CPU dropping to 4GHz during DX12 games despite stable, cool temperatures, suggesting BIOS or tuning issues.