BIOS refuses to allow a 4.5ghz overclock for the Z87X-UD4h + i5 4670k.
BIOS refuses to allow a 4.5ghz overclock for the Z87X-UD4h + i5 4670k.
My problem is that when reviewing the screenshots, it appears I achieved a successful overclock to 4.4ghz at 1.200V. However, upon checking my BIOS images, I see the input as 4.5ghz, yet the motherboard fails to save and boot those settings. The only solution is using an OC software within Windows, which is quite inconvenient. I attempted to restart with default settings, which restored everything to normal. I then tried again at 4.4ghz, but it didn’t work for 4.5ghz afterward.
You have options to either attempt the beta bios F10b or perform a minor bclk overclock. A small overclock of just 2 bclk could reach 4.49Ghz. Based on my tests, 4 is likely the maximum achievable, so reaching 4.6Ghz seems unlikely.
It's interesting I didn't remember trying a 4.5ghz setting when I first began overclocking. It functioned temporarily but wasn't stable, so I returned to 4.2ghz for some time. Recently, I attempted 4.4ghz again, probably because it's getting warmer—temperatures are around 70-73°C. I was hoping to reach 4.5ghz but the motherboard won't boot that setting even after saving. It only supports up to 4.4ghz.
Should I consider clearing the CMOS? I'm not sure if that would help.
Will maintaining a 44 ratio help if the motherboard speed is raised to 102? It won't post. My RAM was overclocked from 1866MHz to around 1900MHz, which seems to be the reason for the crash. However, yes, it does save the settings.