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I would recommend the Intel based computer users should update the new microcode through windows update.
The reasons to update microcode firmware
- CVE-2019-11091 – Microarchitectural Data Sampling Uncacheable Memory (MDSUM)
- CVE-2018-12126 – Microarchitectural Store Buffer Data Sampling (MSBDS)?
- CVE-2018-12127 – Microarchitectural Load Port Data Sampling (MLPDS)
- CVE-2018-12130 – Microarchitectural Fill Buffer Data Sampling (MFBDS)
KB4465065: Intel microcode updates Applies to: Windows Server 2019, all versionsWindows 10, version 1809 Summary Intel recently announced that they have completed software validations and have started to release new microcode for current CPU platforms in.
Visit Microsoft official website for detailed information to download update and to install
for 1511
https://support.microsoft.com/en-us/help/4494454/kb4494454-intel-microcode-updates
for 1607
https://support.microsoft.com/ms-my/help/4494175/kb4494175-intel-microcode-updates
https://support.microsoft.com/ms-my/help/4494175/kb4494175-intel-microcode-updates
for 1703
https://support.microsoft.com/en-us/help/4494453/kb4494453-intel-microcode-updates
for 1709
https://support.microsoft.com/en-us/help/4494452/kb4494452-intel-microcode-updates
https://support.microsoft.com/en-us/help/4494453/kb4494453-intel-microcode-updates
for 1709
https://support.microsoft.com/en-us/help/4494452/kb4494452-intel-microcode-updates
for 1903
https://support.microsoft.com/ha-latn-ng/help/4497165/kb4497165-intel-microcode-updates
https://support.microsoft.com/ha-latn-ng/help/4497165/kb4497165-intel-microcode-updates
Unfortunately microsoft does not released microcode for 1803 and 1809 version .
Intel Microcode Download
Source taken from :: https://support.microsoft.com/en-us/
Thanks for reading my post.
Microsoft can you please help us bring attention to this issue!!!!! I have a feeling that you implemented the microcode update just fine, but many of the manufacturers (ahem ASRock!!!!!! Looking at you!!!) Have only issued a single BIOS update for Spectre/Meltdown. It is labeled as a BETA in the BIOS menus, and is likely the cause of this issue.
Either the Windows Microcode has a bug, or the BIOS does, but somebody needs to respond and give us some feedback! My system currently runs almost 15% slower in CPU heavy tasks. If there are logs we can provide or something let us know!
Broadwell-E overclocking was broken by KB4100347. The CPU cache overclock still works but the core multiplier is limited to stock speeds (40 on Turbo 3.0 cores, 38 on all others.) It was rumored that KB4346084 was the proper replacement, but the Broadwell-E CPUs are technically not listed on the page for KB4346084 so we can't be assured that it even works. Even worse, installing Windows 10 build 1809 causes the overclocking bug, and you don't have the ability to remove or block the microcode update in it to a working version so you are stuck with a CPU running 800Mhz slower than you are used to. This has to be fixed even if it means we have to pressure manufacturers into updating a BIOS somehow.
Broadwell-E overclocking was broken by KB4100347. The CPU cache overclock still works but the core multiplier is limited to stock speeds (40 on Turbo 3.0 cores, 38 on all others.) It was rumored that KB4346084 was the proper replacement, but the Broadwell-E CPUs are technically not listed on the page for KB4346084 so we can't be assured that it even works. Even worse, installing Windows 10 build 1809 causes the overclocking bug, and you don't have the ability to remove or block the microcode update in it to a working version so you are stuck with a CPU running 800Mhz slower than you are used to. This has to be fixed even if it means we have to pressure manufacturers into updating a BIOS somehow.