Windows 10 1809 update can break Broadwell-E overclocking

JasonPC

Limp Gawd
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Dec 12, 2011
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Just FYI the Spectre/Meltdown updates that were issued in an update prior to W10 version 1809 are included in the update and cannot be disabled. Without a BIOS update with the most recent Intel microcode update for X99 motherboards, this can break overclocking features.

Problem is a lot of bios support has ended depending on brand. I think Asus has an update.

There is a way to create a custom bios with the latest Intel mcu if one is not already available, but obviously it's not simple to do and can have severe consequences if done incorrectly.
 

Araxie

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Weird.. one of my work machines have an 5960X running win10 1809, disabled spectre and meltdown with inspectre no issues with overclocking and/or bios feature on Sabertooth X99.
 

Mr. Bluntman

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Took my 5930K up to a heady yet "safe" 4.2GHz and the RAM from 2133 to 2400 to see if I was unlucky, and fortunately no issues here. My X99-A USB 3.1 has an update for Spectre/Meltdown, but never installed it. Your board should too. ASUS is decent about supporting their boards with new microcode or CPU support after most manufacturers call it quits.
 

JasonPC

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The bug apparently doesn't affect Haswell-E. Just Broadwell-E (6800k, etc). So it seems to be linked to the microcode itself for those CPUs. I have a 6800k and my clocks were stuck at 3.8 Ghz. Updating the bios with the most recent microcode fixed it.
 
D

Deleted member 290925

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My 5960x can still overclocked at 4.3ghz with latest Windows 10 update.
 

Mr. Bluntman

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My 5960x can still overclocked at 4.3ghz with latest Windows 10 update.

See below repost of post above you:

The bug apparently doesn't affect Haswell-E. Just Broadwell-E (6800k, etc). So it seems to be linked to the microcode itself for those CPUs. I have a 6800k and my clocks were stuck at 3.8 Ghz. Updating the bios with the most recent microcode fixed it.

Us Haswell-E users are not affected by this bug. Hopefully Intel and Microsoft have a big enough can of RAID to kill it! *rimshot*
 

JasonPC

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Dec 12, 2011
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Well apparently the new 1903 update is at it again breaking overclocking for Broadwell-E owners. Most motherboard suppliers managed to push a microcode update in the bios that fixed the overclocking problem in 1809. There is no such microcode from intel or bios out there right now to correct this. Until then I rolled back to 1809. This is really making me hate intel.
 
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