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  1. #681
    ROG Enthusiast Array pokuly PC Specs
    pokuly PC Specs
    MotherboardASUS PRIME Z370-A
    ProcessorSpectre inside i7 8700k
    Memory (part number)G.Skill Trident Z F4-3200C14D-32GTZSW
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    MonitorASUS VN279QLB@75Hz
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    When you also want to mitigate Speculative Store Bypass (SSBDWindowsSupportEnabledSystemWide : True) you have to use these values for the reg:
    Tested with my i8700 Coffee Lake
    "FeatureSettingsOverrideMask"=dword:00000403
    "FeatureSettingsOverride"=dword:00000408
    Last edited by pokuly; 03-06-2019 at 01:47 AM.

  2. #682
    ROG Guru: Brown Belt Array Brighttail PC Specs
    Brighttail PC Specs
    Laptop (Model)Asus G751JT
    MotherboardAsus x299 Rampage VI Extreme
    ProcessorIntel i9-7900x
    Memory (part number)Corsair Dominator Platinum SE 3200Mhz 4x8
    Graphics Card #1MSI GTX 1080TI
    MonitorAcer XB321HK (4k,IPS,G-sync)
    Storage #1Intel 900p (Boot) 2xSM961 (RAID 0) Games
    Storage #2Samsung 850 Pro 512GB - WD Black 4TB
    CPU CoolerCustom Water Cool
    CasePhanteks Enthoo Elite
    Power SupplyCorsair AX 1200i
    Keyboard Corsair Platinum 95
    Mouse Asus SPATHA
    Mouse Pad Corsair MM800
    Headset/Speakers Kanyo Y5
    OS Windows 10 64 bit
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    Quote Originally Posted by pokuly View Post
    When you also want to mitigate Speculative Store Bypass (SSBDWindowsSupportEnabledSystemWide : True) you have to use these values for the reg:
    Tested with my i8700 Coffee Lake
    "FeatureSettingsOverrideMask"=dword:00000403
    "FeatureSettingsOverride"=dword:00000408
    Does this give you any measurable increase in M.2 / SSD speed?
    Panteks Enthoo Elite / Asus x299 Rampage VI Extreme / Intel I9-7900X / Corsair Dominator Platinum SE 4x8 3200MHz
    MSI GTX 1080 TI / 2x Intel 900p in a bootable VROC RAID 0 / Samsung 960 Pro 512GB
    Samsung 850 PRO 512GB / Western Digital Gold 8TB HD
    Corsair AX 1200i / Corsair Platinum K95 / Asus Spatha
    Acer XB321HK 4k, IPS, G-sync Monitor / Water Cooled / Asus G571JT Laptop

  3. #683
    ROG Enthusiast Array pokuly PC Specs
    pokuly PC Specs
    MotherboardASUS PRIME Z370-A
    ProcessorSpectre inside i7 8700k
    Memory (part number)G.Skill Trident Z F4-3200C14D-32GTZSW
    Graphics Card #1EVGA GTX 970 SC
    MonitorASUS VN279QLB@75Hz
    CPU CoolerThermalright Macho
    Power SupplySuperflower 550W

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    Quote Originally Posted by Brighttail View Post
    Does this give you any measurable increase in M.2 / SSD speed?
    If anything it decreases performance by a minimal amount since you mitigate another vulnerability.
    CrytalDiskMark is pretty much the same with my RAMdrive and still by the same amount faster against non activated recent kernel changes.
    The MS script outputs:

    BTIHardwarePresent : True
    BTIWindowsSupportPresent : True
    BTIWindowsSupportEnabled : True
    BTIDisabledBySystemPolicy : False
    BTIDisabledByNoHardwareSupport : False
    BTIKernelRetpolineEnabled : False
    BTIKernelImportOptimizationEnabled : True
    KVAShadowRequired : True
    KVAShadowWindowsSupportPresent : True
    KVAShadowWindowsSupportEnabled : True
    KVAShadowPcidEnabled : True
    SSBDWindowsSupportPresent : True
    SSBDHardwareVulnerable : True
    SSBDHardwarePresent : True
    SSBDWindowsSupportEnabledSystemWide : True
    L1TFHardwareVulnerable : True
    L1TFWindowsSupportPresent : True
    L1TFWindowsSupportEnabled : True
    L1TFInvalidPteBit : 45
    L1DFlushSupported : True
    Last edited by pokuly; 03-06-2019 at 02:08 AM.

  4. #684
    ROG Guru: Brown Belt Array Brighttail PC Specs
    Brighttail PC Specs
    Laptop (Model)Asus G751JT
    MotherboardAsus x299 Rampage VI Extreme
    ProcessorIntel i9-7900x
    Memory (part number)Corsair Dominator Platinum SE 3200Mhz 4x8
    Graphics Card #1MSI GTX 1080TI
    MonitorAcer XB321HK (4k,IPS,G-sync)
    Storage #1Intel 900p (Boot) 2xSM961 (RAID 0) Games
    Storage #2Samsung 850 Pro 512GB - WD Black 4TB
    CPU CoolerCustom Water Cool
    CasePhanteks Enthoo Elite
    Power SupplyCorsair AX 1200i
    Keyboard Corsair Platinum 95
    Mouse Asus SPATHA
    Mouse Pad Corsair MM800
    Headset/Speakers Kanyo Y5
    OS Windows 10 64 bit
    Accessory #1 2 x Alphacool Full Copper Radiator 420mm/280mm
    Accessory #2 Monsoon MMRS reservoir w/ 2 x D5 Vario Pump
    Accessory #3 Monsoon Free Center Compression Fittings

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    Honestly I don't concern myself with SPECTRE too much. If I could disable all checks/precautions/fixes for it and gain back the original speed I would but alas we can't do that. So if it isn't going to impact performance I'll leave it as it is now. Thanks!

    Quote Originally Posted by pokuly View Post
    If anything it decreases performance by a minimal amount since you mitigate another vulnerability.
    CrytalDiskMark is pretty much the same with my RAMdrive and still by the same amount faster against non activated recent kernel changes.
    The MS script outputs:

    BTIHardwarePresent : True
    BTIWindowsSupportPresent : True
    BTIWindowsSupportEnabled : True
    BTIDisabledBySystemPolicy : False
    BTIDisabledByNoHardwareSupport : False
    BTIKernelRetpolineEnabled : False
    BTIKernelImportOptimizationEnabled : True
    KVAShadowRequired : True
    KVAShadowWindowsSupportPresent : True
    KVAShadowWindowsSupportEnabled : True
    KVAShadowPcidEnabled : True
    SSBDWindowsSupportPresent : True
    SSBDHardwareVulnerable : True
    SSBDHardwarePresent : True
    SSBDWindowsSupportEnabledSystemWide : True
    L1TFHardwareVulnerable : True
    L1TFWindowsSupportPresent : True
    L1TFWindowsSupportEnabled : True
    L1TFInvalidPteBit : 45
    L1DFlushSupported : True
    Panteks Enthoo Elite / Asus x299 Rampage VI Extreme / Intel I9-7900X / Corsair Dominator Platinum SE 4x8 3200MHz
    MSI GTX 1080 TI / 2x Intel 900p in a bootable VROC RAID 0 / Samsung 960 Pro 512GB
    Samsung 850 PRO 512GB / Western Digital Gold 8TB HD
    Corsair AX 1200i / Corsair Platinum K95 / Asus Spatha
    Acer XB321HK 4k, IPS, G-sync Monitor / Water Cooled / Asus G571JT Laptop

  5. #685
    ROG Enthusiast Array pokuly PC Specs
    pokuly PC Specs
    MotherboardASUS PRIME Z370-A
    ProcessorSpectre inside i7 8700k
    Memory (part number)G.Skill Trident Z F4-3200C14D-32GTZSW
    Graphics Card #1EVGA GTX 970 SC
    MonitorASUS VN279QLB@75Hz
    CPU CoolerThermalright Macho
    Power SupplySuperflower 550W

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    Quote Originally Posted by pokuly View Post
    With build 17763.348 1809 Microsoft introduced kernel optimizations like retpoline to get some speed back.
    For my Coffee Lake retpoline doesn't work but enabling the new optimizations in registry does set
    "BTIKernelImportOptimizationEnabled : True" and brings back a little performance.
    https://techcommunity.microsoft.com/...ws/ba-p/295618

    ImgDisk RAMdrive behaves like that:

    Before
    Attachment 79317
    After
    Attachment 79318
    Apropos "brings back performance"
    Always a pleasure to see the performance vanishing. ZombieLoad takes more again.
    Newly patched WIN 1903 µC B4 for the 8700k
    Miniatura de Adjuntos Miniatura de Adjuntos 1803_ID_µC_B4.png  


  6. #686
    ROG Guru: Orange Belt Array geneo PC Specs
    geneo PC Specs
    MotherboardMaximus X Code
    ProcessorIntel 8086K @ 5.1Ghz
    Memory (part number)32 GB (2x16) G.Skill TridentZ RGB 3200 MHz CL14 @ 3733 16-16-36
    Graphics Card #1MSI GTX 1070 X 8GB
    Graphics Card #2AMD Radeon WX 7100
    MonitorNEC PA271Q and Dell
    Storage #1Samsung 512 GB 960 Pro
    Storage #21TB 850 x 1 TB 860 EVO RAID 0, 6 TB WDC Black HDD
    CPU CoolerNoctua NH-D15 Chromax
    CaseFractal Design R4 w/ tempered glass
    Power Supply750W Seasonic Prime Ultra Titanium
    Keyboard CM Quickfire Rapid TKL
    Mouse G602
    Headset Bose
    Headset/Speakers Vanatoo T1, ML Dynamo 300
    OS Windows 10 Pro X64
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    CDM with RAM cache isn't a good measure of anything.

  7. #687
    ROG Enthusiast Array pokuly PC Specs
    pokuly PC Specs
    MotherboardASUS PRIME Z370-A
    ProcessorSpectre inside i7 8700k
    Memory (part number)G.Skill Trident Z F4-3200C14D-32GTZSW
    Graphics Card #1EVGA GTX 970 SC
    MonitorASUS VN279QLB@75Hz
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    Quote Originally Posted by geneo View Post
    CDM with RAM cache isn't a good measure of anything.
    It shows the performance hits of the mitigations pretty well so far with every change while for example audio encoding software reacts very different to the patches.

  8. #688
    ROG Guru: Orange Belt Array R5Eandme PC Specs
    R5Eandme PC Specs
    MotherboardRampage V Extreme/U3.1
    Processori7-5930K
    Memory (part number)Corsair Vengeance LPX CMK64GX4M8A2400C14
    Graphics Card #1MSI Geforce GTX 980Ti
    Sound CardAsus Essence STX II
    MonitorAcer B286HK 4K UHD
    Storage #1Samsung 960 Pro 1TB NVMe
    Storage #2Samsung 850 Pro 1TB SSD
    CPU CoolerNoctua NH-D15S
    CaseCooler Master HAF 932
    Power SupplyThermaltake TPG-1200M-F 1200W
    Keyboard Corsair K70 Cherry MX Brown
    Mouse Asus Sica
    Mouse Pad "And God said ... <Maxwell's equations> ... and there was light."
    OS Win 10 x64 Pro
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    Windows updates to cpu microcode

    I have an old BIOS (3701) on the R5E that pre-dates the announcement of Meltdown and Spectre vulnerabilities. A year ago GRC InSpectre found that I was vulnerable to Spectre, which requires a cpu microcode update. I was surprised to find recently that InSpectre reports that I am now protected against BOTH Meltdown and Spectre (don't know which Spectre variants)

    Click image for larger version. 

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    I know that Windows Updates have provided new cpu microcode to mitigate against both Spectre and Meltdown. Some on this thread has said the BIOS should be updated anyway because Windows OS loads the microcode on each boot in volatile memory. Is that true? I had thought that the OS can in fact re-flash parts of BIOS, and InSpectre reports that the hardware has been updated. Just curious about this. If Windows updates have in fact re-flashed parts of the BIOS, then re-flashing with an older BIOS (e.g. 3902) will wipe out the microcode mitigations that Windows updates have done. With Spectre we are up to at least 4 vulnerability variants and more being discovered, so I am thinking that relying on Windows updates will be more current than flashing with old BIOS images. Any thoughts?

    Of interest, here are Windows documents titled "Windows UEFI firmware update platform" and "Updating Device Firmware using Windows Update"

    https://docs.microsoft.com/en-us/win...pdate-platform

    https://docs.microsoft.com/en-us/win...windows-update
    Last edited by R5Eandme; 05-30-2019 at 10:16 PM.

  9. #689
    ROG Guru: White Belt Array raju2529 PC Specs
    raju2529 PC Specs
    Laptop (Model)R542UQ-DM153 ( X542UQ.305 )
    MotherboardAsus motherboard
    ProcessorIntel core i5 7200u @2.5Ghz
    Memory (part number)Adata 2400 Mhz 16GB
    Graphics Card #1intel Hd 620 graphics 1GB DDR3
    Graphics Card #2Nvidia GeForce 940MX 2GB GDDR5
    Graphics Card #3nil
    Graphics Card #4nil
    Sound CardRealtek HD Audio controller with codec 294
    MonitorLcd monitor
    Storage #1Samsung 850 Evo 250GB SSD M.2. 2280
    Storage #2Seagate 2TB 2.5inch. Toshiba 1TB 2.5 inch
    CPU CoolerBuilt-in
    Casefrom factory
    Power Supply65W
    Keyboard Built in keyboard
    Mouse Built in mouse
    Headset Philips HeadSet
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    OS Windows 10 64bit 1809 build no 17763.503
    Network RouterBsnl Wi-Fi modem with router

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    if you uninstall Windows microcode update , then the spectra and meltdown will be un protected . Hence you need to update the new Microcode Bios firmware.
    Moreover Microsoft provided registry keys for temporary protection for above vulnerability

  10. #690
    ROG Guru: Orange Belt Array geneo PC Specs
    geneo PC Specs
    MotherboardMaximus X Code
    ProcessorIntel 8086K @ 5.1Ghz
    Memory (part number)32 GB (2x16) G.Skill TridentZ RGB 3200 MHz CL14 @ 3733 16-16-36
    Graphics Card #1MSI GTX 1070 X 8GB
    Graphics Card #2AMD Radeon WX 7100
    MonitorNEC PA271Q and Dell
    Storage #1Samsung 512 GB 960 Pro
    Storage #21TB 850 x 1 TB 860 EVO RAID 0, 6 TB WDC Black HDD
    CPU CoolerNoctua NH-D15 Chromax
    CaseFractal Design R4 w/ tempered glass
    Power Supply750W Seasonic Prime Ultra Titanium
    Keyboard CM Quickfire Rapid TKL
    Mouse G602
    Headset Bose
    Headset/Speakers Vanatoo T1, ML Dynamo 300
    OS Windows 10 Pro X64
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    Microcode is loaded into the processor by the BIOS. If an installed Microsoft update has a newer version of the Microcode than what was loaded by the BIOS, then Windows loads that updated Microcode into the processor early in the boot. If someone has the level of access to your system to alter the microcode, they already have enough access to do your system harm anyway.

    You often do not get these microcode updates from Microsoft automatically through Windows Update - you need to fetch the update and install it manually. As mentioned, if you uninstall the microcode update, it won't be loaded and may leave you open to someone exploiting the vulnerability it protected against.

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