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  1. #1
    ROG Guru: Brown Belt Array Brighttail PC Specs
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    Laptop (Model)Asus G751JT
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    MonitorAcer XB321HK (4k,IPS,G-sync)
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    Managed to get some speed back on M.2s using Retpoline

    Microsoft released 1809 a little while ago and has decided to allow access to their new way to combat SPECTRE using Retpoline. Long story short, we all know that the SPECTRE microcode killed a lot of speed from many of our SSD/M.2s, for me it was up to 30+% on Q1 4k Read/write. By default, Microsoft has turned OF the Retpoline fix in build 1809 but you can manually turn it on if you wish. If not, Microsoft will roll out patches as they always do and eventually you'll get it. I wanted to see how much difference there actually was. Below is what I did and the results.

    So I went back and turned off the Retpoline and took some reading and then turned it back on and tried again.
    I'm definitely seeing some improvement, which is nice. When Spectre first came out I personally lost about 30-35% speed on my 4k Q1 random read/writes. Looks like the new Retpoline gets me back 4-7%. 4k Q32 raised by roughly a 100Mb/s which is also nice. Sequential read/write stayed the same, about 800mb/s slower than what it was originally. Overall I probably won't be able to tell the difference in real time but it is nice to see that Retpoline has some effect and I can actually see the changes through benchmarks.

    I will put the steps of what I did. These are my steps as the "add reg" line shown in the microsoft article above, didn't work for me and kept coming up with a syntax error. For this to work you need to have installed Microsoft update: KB4482887

    So I went directly into the registry.

    1. Enter registry and save. (in case you mess up)
    2. Navigated to HKLM\SYSTEM\CurrentControlSet\Control\Session Manager\Memory Management
    3. Right clicked and ADD NEW DWORD (32BIT)
    4. Renamed it to FeatureSettingsOverride
    5. Double clicked the new registry entry and entered the hexidecimal value as 0x400
    6. Right clicked and ADD NEW DWORD (32BIT)
    7. Renamed it to FeatureSettingsOverrideMask
    8. Double clicked the new registry entry and entered the hexidecimal value as 0x400
    9. Restarted.

    You can go to https://support.microsoft.com/en-us/...ngs-powershell in order to test it through powershell. Follow all the directions including the last to reset the values back to the originals after you get your read out. In the end you should see the following:

    "BTIKernelImportOptimizationEnabled : True"

    This will show that Retpoline is enabled. If at any time you have issues, restore your old registry. Once again this is how I did it. Your mileage may vary.

    Click image for larger version. 

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ID:	79321
    Pre-Retpoline

    Click image for larger version. 

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ID:	79322
    Post-Retpoline
    Panteks Enthoo Elite / Asus x299 Rampage VI Extreme / Intel I9-7900X / Corsair Dominator Platinum SE 4x8 3200MHz
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  2. #2
    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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    Hey @justintyme clear your inbox.
    Last edited by xeromist; 03-07-2019 at 08:36 PM.
    Panteks Enthoo Elite / Asus x299 Rampage VI Extreme / Intel I9-7900X / Corsair Dominator Platinum SE 4x8 3200MHz
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    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. #3
    TeamROG Moderator Array xeromist PC Specs
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    Quote Originally Posted by Brighttail View Post
    Hey @justintyme clear your inbox.
    Unfortunately Justin was banned a while back. I believe he posts on other enthusiast forums so you might be able to get in touch with him that way.
    * Support disease research with Folding@Home *

    < < < Click the drop-down above my avatar for my PC specs!

  4. #4
    ROG Guru: Brown Belt Array Hopper64 PC Specs
    Hopper64 PC Specs
    MotherboardAsus R6EO Bios 0602
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    Memory (part number)GSkill F4-3600C16Q2-64GTZR
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    Sound CardCreative SB AE7
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    Quote Originally Posted by Brighttail View Post
    Microsoft released 1809 a little while ago and has decided to allow access to their new way to combat SPECTRE using Retpoline. Long story short, we all know that the SPECTRE microcode killed a lot of speed from many of our SSD/M.2s, for me it was up to 30+% on Q1 4k Read/write. By default, Microsoft has turned OF the Retpoline fix in build 1809 but you can manually turn it on if you wish. If not, Microsoft will roll out patches as they always do and eventually you'll get it. I wanted to see how much difference there actually was. Below is what I did and the results.

    So I went back and turned off the Retpoline and took some reading and then turned it back on and tried again.
    I'm definitely seeing some improvement, which is nice. When Spectre first came out I personally lost about 30-35% speed on my 4k Q1 random read/writes. Looks like the new Retpoline gets me back 4-7%. 4k Q32 raised by roughly a 100Mb/s which is also nice. Sequential read/write stayed the same, about 800mb/s slower than what it was originally. Overall I probably won't be able to tell the difference in real time but it is nice to see that Retpoline has some effect and I can actually see the changes through benchmarks.

    I will put the steps of what I did. These are my steps as the "add reg" line shown in the microsoft article above, didn't work for me and kept coming up with a syntax error. For this to work you need to have installed Microsoft update: KB4482887

    So I went directly into the registry.

    1. Enter registry and save. (in case you mess up)
    2. Navigated to HKLM\SYSTEM\CurrentControlSet\Control\Session Manager\Memory Management
    3. Right clicked and ADD NEW DWORD (32BIT)
    4. Renamed it to FeatureSettingsOverride
    5. Double clicked the new registry entry and entered the hexidecimal value as 0x400
    6. Right clicked and ADD NEW DWORD (32BIT)
    7. Renamed it to FeatureSettingsOverrideMask
    8. Double clicked the new registry entry and entered the hexidecimal value as 0x400
    9. Restarted.

    You can go to https://support.microsoft.com/en-us/...ngs-powershell in order to test it through powershell. Follow all the directions including the last to reset the values back to the originals after you get your read out. In the end you should see the following:

    "BTIKernelImportOptimizationEnabled : True"

    This will show that Retpoline is enabled. If at any time you have issues, restore your old registry. Once again this is how I did it. Your mileage may vary.

    Click image for larger version. 

Name:	1.jpg 
Views:	0 
Size:	127.0 KB 
ID:	79321
    Pre-Retpoline

    Click image for larger version. 

Name:	2.jpg 
Views:	0 
Size:	121.6 KB 
ID:	79322
    Post-Retpoline


    Just loaded latest windows 10 updates which had a blurb about this topic. I think this is what you were referring to?

    "Enables “Retpoline” by default if Spectre Variant 2 (CVE-2017-5715) is enabled."
    May 14, 2019—KB4494441 (OS Build 17763.503)

    https://support.microsoft.com/en-us/...date-kb4494441

  5. #5
    ROG Guru: Brown Belt Array Hopper64 PC Specs
    Hopper64 PC Specs
    MotherboardAsus R6EO Bios 0602
    Processori9 9900X @ 4.9 1.28V VCore
    Memory (part number)GSkill F4-3600C16Q2-64GTZR
    Graphics Card #1EVGA 2080 Ti Kingpin
    Sound CardCreative SB AE7
    MonitorAsus ROG PG348Q
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    Trying to upload a shot of my results but the website is not allowing it. Tried 2 different browsers.

  6. #6
    ROG Enthusiast Array Shanester PC Specs
    Shanester PC Specs
    MotherboardROG MAXIMUS EXTREME / ROG RAMPAGE VI EXTREME OMEGA
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    Quote Originally Posted by xeromist View Post
    Unfortunately Justin was banned a while back. I believe he posts on other enthusiast forums so you might be able to get in touch with him that way.
    Is this true? I had no idea. Why the ban?

  7. #7
    TeamROG Moderator Array xeromist PC Specs
    xeromist PC Specs
    Laptop (Model)Dell Inspiron 15 7567
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    Casecustom Antec 900
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    Quote Originally Posted by Shanester View Post
    Is this true? I had no idea. Why the ban?
    He had a history of starting fights with people and was warned many times. Pretty smart guy but he has the social acumen of a wet cat and proud of it. Finally he started a fight with an Admin after an unsupported smear against another company. Kept at it even after being told to back off. That combined with his history finally got him banned I believe. It's unfortunate but at a certain point causing trouble outweighs positive contributions.

    But this isn't really a topic for this thread. I just wanted Brighttail to know.
    Last edited by xeromist; 05-15-2019 at 10:08 PM.
    * Support disease research with Folding@Home *

    < < < Click the drop-down above my avatar for my PC specs!

  8. #8
    ROG Guru: Brown Belt Array tistou77 PC Specs
    tistou77 PC Specs
    MotherboardRampage VI Extreme
    Processor7980XE @4.6Ghz
    Memory (part number)G.Skill Trident Z RGB 4x8Gb @4000 C16
    Graphics Card #1EVGA RTX 2080ti XC Ultra
    Sound CardXonar Phoebus
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    Hello

    Until now I disabled the Spectrum patch on Windows with these registry keys

    [HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Contro l\Session Manager\Memory Management]
    "FeatureSettingsOverride"=dword:00000003
    "FeatureSettingsOverrideMask"=dword:00000003

    Is it better with Reptoline and these registry keys ?

    [HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Contro l\Session Manager\Memory Management]
    "FeatureSettingsOverride"=dword:00000400
    "FeatureSettingsOverrideMask"=dword:00000400

    Thanks
    Last edited by tistou77; 05-16-2019 at 04:46 PM.
    Sorry for my english


    Case: Lian Li A77F
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  9. #9
    ROG Guru: Brown Belt Array tistou77 PC Specs
    tistou77 PC Specs
    MotherboardRampage VI Extreme
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    I tested and the best is still to disable the Spectre patch with the 1st registry keys
    But I'm still with CU .437 (1809), maybe Reptoline is not active ?
    Sorry for my english


    Case: Lian Li A77F
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    CPU: i9 7980XE
    RAM: G.Skill Trident Z RGB 4x8Gb @4000 C16
    GPU: EVGA RTX 2080ti XC Ultra
    PSU: Seasonic Prime Ultra Titanium 1000W
    OS: Intel Optane 900P
    DATA: Samsung 970 EVO
    SOUND: Asus Xonar Phoebus

  10. #10
    ROG Enthusiast Array pokuly PC Specs
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    Just stumbled across MDS Tool. It is easier to use as the MS script to read out patch status. https://mdsattacks.com/

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