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Maximus Hero VIII vcore won't drop during idle?

xPepi
Level 7
I just did a BIOS flash from 2001 to 3401. All seems fine but I can't seem to get my vcore to drop when my system is idle.

I have c-states enabled etc, I have minimum cpu power in power settings set to 10% and max set to 100%. I put back all my settings after the BIOS flash (my OC) settings etc.

I'm not looking to have my cpu clocks drop, just the vcore...

What did notice is that the Package C States Limit setting no longer allows you to pick "Enabled" It's either Auto or a series of C values to choose from.

Could this be it?
4,579 Views
6 REPLIES 6

Nate152
Moderator
Hi xPepi

Check you have the windows power plan set to balanced, this should drop the cpu speed and voltage at idle.

You can't have just the Vcore drop or you'll have an unstable system.

xPepi
Level 7
I just tried that. Now the clocks fluctuate but the vcore stays the same?

Nate152
Moderator
All right,

Switch the cpu core/cache voltage to adaptive, with the C-States and Speedstep enabled with the windows power plan set to balanced the speed and voltage should drop when at idle.

Nate152 wrote:
All right,

Switch the cpu core/cache voltage to adaptive, with the C-States and Speedstep enabled with the windows power plan set to balanced the speed and voltage should drop when at idle.


I always used adaptive, still the vcore after the BIOS update won't drop during idle, only clocks.

[2017/06/23 11:36:43]
Ai Overclock Tuner [XMP]
XMP [XMP DDR4-3000 15-17-17-35-1.35V]
BCLK Frequency [100.0000]
ASUS MultiCore Enhancement [Disabled]
CPU Core Ratio [Per Core]
1-Core Ratio Limit [45]
2-Core Ratio Limit [45]
3-Core Ratio Limit [45]
4-Core Ratio Limit [45]
BCLK Frequency : DRAM Frequency Ratio [Auto]
DRAM Odd Ratio Mode [Enabled]
DRAM Frequency [DDR4-3000MHz]
Xtreme Tweaking [Disabled]
TPU [Keep Current Settings]
EPU Power Saving Mode [Disabled]
CPU SVID Support [Auto]
CPU Core/Cache Current Limit Max. [255.00]
Min. CPU Cache Ratio [45]
Max CPU Cache Ratio [45]
CPU Core/Cache Voltage [Adaptive Mode]
- Offset Mode Sign [+]
- Additional Turbo Mode CPU Core Voltage [1.220]
- Offset Voltage [0.010]
DRAM Voltage [1.3500]
CPU VCCIO Voltage [1.00000]
CPU System Agent Voltage [1.00000]
PCH Core Voltage [Auto]
CPU Standby Voltage [Auto]
FCLK Frequency for Early Power On [Auto]
Initial BCLK Frequency [Auto]
BCLK Amplitude [Auto]
BCLK Slew Rate [Auto]
BCLK Spread Spectrum [Auto]
BCLK Frequency Slew Rate [Auto]
DRAM VTT Voltage [Auto]
VPPDDR Voltage [Auto]
DMI Voltage [Auto]
Core PLL Voltage [Auto]
Internal PLL Voltage [Auto]
PLL Bandwidth [Auto]
DRAM Eventual Voltage [Auto]
Eventual CPU Standby Voltage [Auto]
Eventual DMI Voltage [Auto]
Maximus Tweak [Auto]
MRC Fast Boot [Auto]
DRAM CLK Period [Auto]
Memory Scrambler [Enabled]
Channel A DIMM Control [Enable both DIMMs]
Channel B DIMM Control [Enable both DIMMs]
MCH Full Check [Auto]
DLLBwEn [Auto]
DRAM SPD Write [Disabled]
XTU Setting [Auto]
VRM Spread Spectrum [Disabled]
Active Frequency Mode [Disabled]
CPU Power Duty Control [T.Probe]
CPU Power Phase Control [Auto]
CPU Power Thermal Control [115]
DRAM Current Capability [100%]
DRAM Power Phase Control [Extreme]
DRAM Switching Frequency [Auto]
CPU Core/Cache Boot Voltage [Auto]
DMI Boot Voltage [Auto]
Core PLL Boot Voltage [Auto]
CPU System Agent Boot Voltage [Auto]
CPU VCCIO Boot Voltage [Auto]
Intel(R) SpeedStep(tm) [Enabled]
Turbo Mode [Enabled]
Long Duration Package Power Limit [Auto]
Package Power Time Window [Auto]
Short Duration Package Power Limit [Auto]
IA AC Load Line [Auto]
IA DC Load Line [Auto]
Hyper-Threading [Enabled]
Thermal Monitor [Enabled]
Active Processor Cores [All]
Intel Virtualization Technology [Disabled]
Hardware Prefetcher [Enabled]
Adjacent Cache Line Prefetch [Enabled]
Boot performance mode [Auto]
SW Guard Extensions (SGX) [Software Controlled]
Tcc Offset Time Window [Auto]
Execute Disable Bit [Enabled]
SMM Code Access Check [Disabled]
SMM Use Delay Indication [Disabled]
SMM Use Block Indication [Disabled]
Intel(R) SpeedStep(tm) [Enabled]
Turbo Mode [Enabled]
CPU C-states [Enabled]
Enhanced C-states [Enabled]
CPU C3 Report [Enabled]
CPU C6 Report [Enabled]
CPU C7 Report [CPU C7s]
CPU C8 Report [Enabled]
Package C State Limit [Auto]
CFG Lock [Disabled]
Intel(R) Speed Shift Technology [Enabled]
Number of P states [0]
Acoustic Noise Mitigation [Disabled]
CTDP BIOS control [Disabled]
Power Limit 1 [0]
Power Limit 2 [0]
Power Limit 1 Time Window [0]
ConfigTDP Turbo Activation Ratio [0]
Power Limit 1 [0]
Power Limit 2 [0]
Power Limit 1 Time Window [0]
ConfigTDP Turbo Activation Ratio [0]
Power Limit 1 [0]
Power Limit 2 [0]
Power Limit 1 Time Window [0]
ConfigTDP Turbo Activation Ratio [0]
Overclocking Lock [Disabled]
PCI Express Native Power Management [Disabled]
PCH DMI ASPM [Disabled]
ASPM [Disabled]
DMI Link ASPM Control [Disabled]
PEG - ASPM [Disabled]
PTID Support [Enabled]
PECI Access Method [Direct I/O]
PCI Express Native Power Management [Disabled]
BDAT ACPI Table Support [Disabled]
Wake system from S5 [Disabled]
ACPI Debug [Disabled]
Low Power S0 Idle Capability [Disabled]
Lpit Recidency Counter [SLP S0]
Intel Ready Mode Technology [Disabled]
PCI Delay Optimization [Disabled]
ZpODD Support [Disabled]
VT-d [Disabled]
Primary Display [Auto]
iGPU Multi-Monitor [Disabled]
DMI Max Link Speed [Auto]
PCIEX16/X8_1 Link Speed [Auto]
PCIEX8_2 Link Speed [Auto]
PCIe Spread Spectrum Clocking [Auto]
IOAPIC 24-119 Entries [Enabled]
PCIe Speed [Auto]
Hyper kit1 Mode [Disabled]
SATA Controller(s) [Enabled]
SATA Mode Selection [AHCI]
S.M.A.R.T. Status Check [Enabled]
Aggressive LPM Support [Disabled]
CPU Core Voltage [Monitor]
3.3V Voltage [Monitor]
5V Voltage [Monitor]
12V Voltage [Monitor]
Anti Surge Support [Enabled]
CPU Q-Fan Control [Disabled]
Water Pump Control [Disabled]
Allow Fan Stop [Enabled]
Fast Boot [Enabled]
Next Boot after AC Power Loss [Normal Boot]
Boot Logo Display [Auto]
POST Delay Time [3 sec]
Boot up NumLock State [Enabled]
Above 4G Decoding [Disabled]
Wait For 'F1' If Error [Enabled]
Option ROM Messages [Enabled]
Interrupt 19 Capture [Enabled]
Setup Mode [Advanced Mode]
Launch CSM [Enabled]
Boot Device Control [UEFI and Legacy OPROM]
Boot from Network Devices [Legacy only]
Boot from Storage Devices [Legacy only]
Boot from PCI-E/PCI Expansion Devices [Legacy only]
OS Type [Other OS]
Setup Animator [Disabled]
Load from Profile [1]
Profile Name []
Save to Profile [1]
CPU Core Voltage [Auto]
VCCSA Voltage [Auto]
BCLK Frequency [Auto]
CPU Ratio [Auto]
Cache Ratio [Auto]
Bus Interface [PCIEX16/X8_1]

Nate152
Moderator
Try resetting the bios to defaults, both cpu speed and voltage should drop when at idle. Make sure the windows power plan is set to balanced.

Is the speed and voltage throttling now ?

Nate152 wrote:
Try resetting the bios to defaults, both cpu speed and voltage should drop when at idle. Make sure the windows power plan is set to balanced.

Is the speed and voltage throttling now ?


1) Put PC to balanced
2) Rebooted into Bios
3) Reset BIOS to default
4) Rebooted twice
5) Core clocks and Vcore stayed the same (makes sense, c-states not applied yet or adaptive)
6) Applied my OC profile
7) Rebooted
😎 Core clocks dropped during idle, Vcore stayed same/constant as before
9) I give up, not a big deal, must be the new BIOS
10) Put PC back to Performance mode since being in Balanced doesn't do what I want
11) Yes I did reset Balanced profile to stock settings

Thanks for the help.