No, you cannot "overclock" non-K CPU on Z390 Mobo.
No, you cannot "overclock" non-K CPU on Z390 Mobo.
Hey, I see you're using an i7-9700 non-K with a 4.4–4.5GHz boost clock across all cores and a 4.7GHz base on one core. You're getting the Z390 motherboard, and you're wondering if you can push all cores to 4.7GHz or adjust the BCLK. You're right about RAM overclocking, but CPU overclocking is a different story. Let me know if you need tips on tuning or stability!
You can increase BCLK, but you won’t see a significant performance improvement. It’s not worth the effort or risk involved.
Caution, adjusting BCLK influences the entire system, not just your CPU. It impacts RAM, IO ports, and more. Pushing too hard or far can cause serious damage. Most people avoid changing BCLK unless they're skilled overclockers who fully understand the risks.
This information is incorrect. The base clock only influences the CPU and RAM since Skylake; beyond that, you'd need to manually adjust memory timings. XMP profiles simply scale the expected 100MHz base clock, which is safe. Starting with Kaby Lake, Intel introduced microcode on locked CPUs that blocks booting if the base clock exceeds 102.98MHz. This means you can gain extra performance without cost, but it’s limited to the available cores. For example, with an i7-9700 having a turbo boost multiplier of 44, reaching 4.4GHz would give you just over 100MHz across all cores.