overclocking help
overclocking help
why cant I reach 5.2 ghz at 5.1 oc but I can easy at 5.0 oc? I9 9900kf. at the 5.1 clock voltage bounces around but 5.0 it is rock solid. any ideas? Seems to be a volt thing as 5.0 does NOT drop where 5.1 does, when volts drop so does clock. At 5.1 bounces from 5202 to 4890, but fine at 5.0? This volts thing just started as it was fine before.
msi z390 mb-pro
aio water cooling 360
32g mem
1300 power supply
15 tb drives
The motherboard might not be suitable for overclocking, or it could have failed to be designed for that purpose. Alternatively, you might have missed the chance to get the right components.
Chips lose performance gradually, so you might need to adjust your overclock later on. It's normal. You could try increasing the voltage, but this will speed up wear. Your CPU cooler may also become blocked, causing hotspots that aren't obvious through monitoring tools.
some cores may become unstable when running at high speeds. consider overclocking each core separately and use prim95 to identify unstable cores. the voltage should stay below 1.3625 volts. the 14nm process is outdated, and your i9 9900k is operating at a very high level. intel released an "unlocked" chip when further overclocking was no longer possible, leading to performance issues. unlike i3, pentium, and celeron, i9 9900k really benefits from overclocking, but intel has restricted significant overclocking to maintain affordability.
discovered an update caused issues with my 5.2 OS, so I performed a clean install after flashing the BIOS to an older version before reverting to the latest. The MSI motherboard problem is now resolved at 1.36v. just wanted to inform everyone.
by the way, this chip supports 5.3 at 1.375v – it’s definitely capable, though it runs hotter than expected. I still prefer it at 5151 because its performance per volt at that speed is excellent.
it seems the update affected the microcode, particularly when interacting with the BIOS. I tested each core individually, but it doesn’t reach the full potential of all-core clocks and is less stable overall.
performance improves significantly when all cores are clocked together. The single-core unit is slower, but it compensates in the overall setup.
I manage the boost and voltage settings, I don't allow MSI to decide what's optimal for the CPU. Clocks should be fine. This was a microcode adjustment I believe, as everything seems correct after updating the BIOS to a lower version and installing Windows cleanly. Surprisingly positive!