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Getting EIST to work with my 7700K + Z270 Gaming Pro Carbon MSI - Page 2

post #11 of 16
Here is some Speed Shift info.

http://www.anandtech.com/show/9751/examining-intel-skylake-speed-shift-more-responsive-processors

Your motherboard might have an EIST option in the bios that is a dummy option when you are overclocking. By that I mean whether you have EIST enabled or disabled in the bios will not make any difference because the bios will disable EIST regardless of your bios setting. If you boot up and run CPU-Z and click on the About tab and then click on Save Report (.TXT) this will create a report with the current value of various registers in your CPU. Post that info here or upload it somewhere convenient like http://pastebin.com/ and then post a link here and I will let you know if EIST is enabled or not.

If it is disabled, you can use software to enable EIST or you can use software to enable Speed Shift.

Edit - Enabling EIST after booting up might be too late for the Windows power profiles to work. It might see that EIST is disabled and disable this feature at the same time. In that case, Speed Shift would be your only option for a low multi at idle and full speed when loaded.
Edited by unclewebb - 3/10/17 at 4:27pm
post #12 of 16
Quote:
Originally Posted by unclewebb View Post

If you want your CPU to down clock when lightly loaded you need to enable EIST (SpeedStep) in the bios and then go into the Windows Control Panel - Power Options and switch to the Balanced power profile with the Minimum processor state set to a low number like 5% with the Max set to 100%. This is what controls your CPU. Put a load on it and it will go up to full speed. With no load, it will drop down to the minimum multiplier that your CPU supports.

If your CPU is going to be idle for long periods of time it makes more sense to enable the C7 C State. Individual cores can spend over 99% of the time in C7 when a CPU is idle and in this state, the core is disconnected from the voltage rail getting zero volts. Difficult to improve upon a core sitting idle at zero volts.

Quote:
Originally Posted by ritchiedrama View Post

I have high performance plan, eist enabled and 5% minimum processor state and it doesn't work is what I'm trying to say smile.gif I don't know what speedshift is.

I found this thread because Im having the same issues.. It must be a BIOS issue.
Here's the thing, even at stock clocks and stock CPU settings (EIST, voltages, multipliers, all CPU-related settings).. it does not like to downclock when idle. If I completely idle at boot, just wait, sit, sit, sit, wait.... it will ventually drop down to 800mhz for a brief moment,.. and i mean a *really* brief moment, before jumping back up to full turbo speed (in my case, 4400mhz). So, completely idle, the processor will stay at 4400mhz for about 99% of the time.. idle.

In the 'Overclocking' section of the BIOS there is the traditional EIST setting, which is set to enabled as default. If you go all the way down to the bottom of that page, youll find the section called CPU Features. In there youll find a few other settings related to C states: "Intel C States" (auto), "C1E support" (disabled), and "Package C State limit" (auto). Ive manually enabled the Intel C States (from the default 'auto' setting), but same behavior in windows. Ill try enabling C1E and messing with the package c state limit (which allows you to choose a particular c state for power saving when idle). I dont know which C state is best, so I may need to do some research and or trial and error.

Maybe we can get this figured out.
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post #13 of 16
Quote:
Originally Posted by ritchiedrama View Post

First I'll list my specs, just so everything is known:

CPU: 7700K @ 5GHz w/ 1.328 vCore
MOBO: MSI Z270 Gaming Pro Carbon
GPU: 970 GTX (upgrading, soon).
MEM: Corsair Vengeance LPX DDR4 3200MHz
COOLING: Corsair H100i V2 w/ pre-applied thermal paste
http://www.userbenchmark.com/UserRun/3051401

Ok, so firstly these are the only things I have changed in BIOS:

CPU Clock: 50 (5GHZ)
EIST: Disabled
Extreme Memory Profile: Enabled
CPU Core Voltage: 1.325 (1.328V displaying in BIOS) - http://i.imgur.com/3W2CL4z.jpg
CPU SA Voltage: 1.200 (1.208V displaying in BIOS as shown in the image after Core Voltage) - This value was set to AUTO previously, and over 1.3V
CPU IO Voltage: 1.150 (1.160V displaying in BIOS as shown in the image after Core Voltage) - This value was set to AUTO previously, and over 1.3V



Now, when I enable EIST it doesn't work and I can only believe it's because I have manually entered core voltage and cpu clock?

I want my PC to go into a slower state with voltage and clock speed overnight when I'm asleep downloading games, so it isn't hammering 1.328v and 5ghz all night.

Can anyone guide me in the right direction? I was told to look for adaptive voltage, but it is't anywhere in my mobo that I can see.

Thanks!


ritchiedrama,


I know this doesn't help, but I have MSI Z270 Gaming M7 motherboard with the latest Bios 1.33 and was using 1.2. I'm having the same issue with the Core Speed dropping down to 800mhz for just a few seconds then back to 4996Mhz - 5.0Mhz. This is with a 5.0Mhz setting. It seems if you make changes in the bios, this is what you get. If you set everything to default it works, with no adjustments. rolleyes.gif
    
CPUMotherboardGraphicsRAM
i7-6850K MSI X99A Gaming Pro Carbon EVGA GTX 1070SC - ACX3.0 -- X2 Corsair Dominator Platinum SE 32GB-CMD32GX4M4C3... 
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Samsung 960Pro M.2 512GB & Samsung 850 Pro SSD ... LG DVDRW GH24LS70 Blu-ray Corsair H80i GT Cooler Windows 10 64Bit Pro 
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ASUS ROG 27" PG278Q -- X2 Logitech G910 RGB Gaming Keyboard XFX (P1-BELX-1000w) Power Suppl ThermalTake Core P5 
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CPUMotherboardGraphicsRAM
i7-6850K MSI X99A Gaming Pro Carbon EVGA GTX 1070SC - ACX3.0 -- X2 Corsair Dominator Platinum SE 32GB-CMD32GX4M4C3... 
Hard DriveOptical DriveCoolingOS
Samsung 960Pro M.2 512GB & Samsung 850 Pro SSD ... LG DVDRW GH24LS70 Blu-ray Corsair H80i GT Cooler Windows 10 64Bit Pro 
MonitorKeyboardPowerCase
ASUS ROG 27" PG278Q -- X2 Logitech G910 RGB Gaming Keyboard XFX (P1-BELX-1000w) Power Suppl ThermalTake Core P5 
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Corsair M65 Vengeance Mouse APC Smart 1500 UPS 
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post #14 of 16
I believe your right when you say it wont downclock because of manual voltage. I had that same problem with my mobo, youll have to use offset voltage.
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Yokai Onmyoji
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Samsung 840 Pro 256GB (OS) Samsung 840 Pro 512GB (Games) Lite-on Corsair H100 
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Windows 7 Ultimate Wasabi Mango UHD490 IPS 49" Freesync 33-60hz Corsair K90 Corsair Ax1200i 
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post #15 of 16
Quote:
Originally Posted by mkimbro View Post

I know this doesn't help, but I have MSI Z270 Gaming M7 motherboard with the latest Bios 1.33 and was using 1.2. I'm having the same issue with the Core Speed dropping down to 800mhz for just a few seconds then back to 4996Mhz - 5.0Mhz. This is with a 5.0Mhz setting. It seems if you make changes in the bios, this is what you get. If you set everything to default it works, with no adjustments. rolleyes.gif
Quote:
Originally Posted by Tgrove View Post

I believe your right when you say it wont downclock because of manual voltage. I had that same problem with my mobo, youll have to use offset voltage.

you know there is this one voltage mode called 'Override + Offset' ... maybe this is the solution.. gonna test these different modes and continue looking into the "Package C State limit" setting
Edited by michaelrw - 3/31/17 at 7:45pm
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post #16 of 16
I have this working fine with the same hardware with both adaptive and offset (set to -), I enabled EIST, set low power limit as C2, selected Balanced Power Plan in win 10. Hope this helps.
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