HardwareProcessorsMSI and Asus roll out first Intel instability fix for a range of motherboards with 0x129 microcode BIOSWhen you purchase through links on our site, we may earn an affiliate commission.Here’s how it works.

HardwareProcessorsMSI and Asus roll out first Intel instability fix for a range of motherboards with 0x129 microcode BIOSWhen you purchase through links on our site, we may earn an affiliate commission.Here’s how it works.

When you purchase through links on our site, we may earn an affiliate commission.Here’s how it works.

(Image credit: Future)

Intel Core i9 14900K CPU on a box and inside a motherboard socket.

Many PC gamers have been waiting with bated breath for a real non-bandaid fix forIntel 13th and 14th Gen instability issues. After months of reported problems, investigations, and workarounds, in July Intel finallysaid it had cracked the issueand would be rolling out a BIOS microcode fix come mid-August. It looks like the first of these are now officially rolling out from MSI and Asus.

MSI reportsthat it’s releasing BIOS updates for Intel 600- and 700-series motherboards with a 0x129 microcode update to “mitigate the instability.”

There are also apparent 0x129 BIOS updates on theAsus ROG forumfor Asus motherboard users to download, but these haven’t yet been pushed to official support pages like some of MSI’s updates have.

The previous interim 0x125 updates that motherboard vendors were rolling out messed with voltages, specifically eTVB (enhanced Thermal Velocity Boost) settings, to keep things ticking over safely until a root-cause fix could be delivered. This latest 0x129 microcode update, it would seem, is supposed to be that root-cause fix.

Here are the “first batch” of motherboards MSI has rolled out the latest BIOS update for:

To check whether your motherboard has got the update, visit its officialmsi.compage and go to Support -> Drivers & Downloads -> Firmware/BIOS.

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I can’t yet confirm what exactly this microcode update does other than to say it will presumably fix the “elevated operating voltage” that’s the root cause of the instability issues.

We’ll be testing the 0x129 microcode update ourselves and will let you know how it tinkers with the latest high-end Intel CPUs as soon as we do.

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Best AIO cooler for CPUs: Keep your chip chill.Best air cooler for CPUs: Classic, quiet cooling.Best PC fans: Quiet and efficient.

Best AIO cooler for CPUs: Keep your chip chill.Best air cooler for CPUs: Classic, quiet cooling.Best PC fans: Quiet and efficient.

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