Overclocking i5 6400
Overclocking i5 6400
I recommend BLCK overclocking for your CPU. This should provide a significant boost, exceeding 100Mhz. The improvement won't work on Skylake processors.
And you seem to know only a handful of motherboards that support specific BIOS updates for this? Damric shared the list. Your own link discusses the feature being taken away. It suggests Turbo isn't working on Skylake, but that's incorrect. Please limit your comments to relevant threads and avoid spreading confusion.
There is a microcode update in later BIOS versions that stops reverting to older BIOS versions on certain boards, mainly to stop overclocking non-K processors. I don't follow it closely, but I think there are still a few boards you can try overclocking. You'll need a Z170 chipset in all cases, and most buyers of locked processors are likely choosing that because they're budget-conscious, making Z170 less popular for them. So while overclocking non-K is technically doable, it's not straightforward unless you approach it from an enthusiast standpoint—it's just something you'd want to attempt. For the majority of questions on new builds here, it probably isn't worth mentioning anymore.
The list I shared was from 2015 but is still being updated. All those BIOSes remain functional.
Greg Salazar worked on a Gigabyte board last month.
[video="https://www.youtube.com/watch?v=gfiGJCUANbA"]
I've made changes and reverted to the previous version on my ASRock board.
The "Intel locked this down" stories were just misleading headlines from uninformed individuals. These BIOSes were always in beta and overclocking has never been officially supported. DO IT.
Turbo operates automatically without any changes required. As mentioned earlier, it's a built-in feature. Regretfully, your discussion got off track. Your processor will change its speed according to requirements and temperature, lowering its clock even when not in use to conserve energy. This is completely normal.