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CPU Clock Bouncing Up and Down in High Performance Power Setting

post #1 of 8
Thread Starter 
As the title states, the CPU clock is bouncing all over the place every second in high performance mode. I've set the minimum processor state at 5%, just like it would be in the balanced power option. I obviously did this so I could keep it in high performance state, but not have my CPU running at full power when I'm idling.

The CPU clock stays stable, relative to the workload in the Balanced power mode. I have gone ahead and changed the settings to the exact same between the balanced and high performance modes. Still bounces everywhere in the high performance mode. There has to be something else going on in the high performance mode that I can't tweak in the settings, since I have set them exactly how they would be in balanced. Any ideas?

Side question, if I just leave the computer in balanced mode but turn off the power savings for the PCI lanes, am I wasting lots of energy/keeping components running like my GPU when they don't need to be?

Thanks
Andromeda
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Andromeda
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post #2 of 8
Thread Starter 
bump
Andromeda
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Andromeda
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CPUMotherboardGraphicsRAM
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Samsung 7200 500GB Samsung 830 120GB  Corsair H100 Windows 8.1 x64 
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post #3 of 8
I'm assuming you're talking about the windows power settings? If so they really don't have much impact on power consumption IMO. All of my systems run "balanced" with the advanced settings adjusted to not turn off the hard disks or go to sleep, but I usually turn off the system when i leave, and only leave it on if it needs to be.

on a side note, do you own something like a kill-a-watt meter to measure the consumption of your system?

http://www.amazon.com/s/?ie=UTF8&keywords=kill+a+watt&tag=mh0b-20&index=electronics&hvadid=1676098363&ref=pd_sl_98x9f93sdm_e

these can be very handy to find the energy hogs in your home.
post #4 of 8
Thread Starter 
I don't have a meter and may invest in one in the future. I'm mostly concerned with why the CPU Clock bounces irregularly in high performance mode only, when I have cloned the settings from balanced. I'm just curious.

EDIT: Yes, I'm talking about the Windows power options.
Andromeda
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CPUMotherboardGraphicsRAM
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Samsung 27'' P2770 K90 Corsair HX850W Carbide 500R 
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Andromeda
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CPUMotherboardGraphicsRAM
i5-3570k [4.5Ghz] Z77X-UP5TH EVGA GTX 670FTW Corsair Vengeance 4x4 16GB 
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Samsung 7200 500GB Samsung 830 120GB  Corsair H100 Windows 8.1 x64 
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Samsung 27'' P2770 K90 Corsair HX850W Carbide 500R 
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Audio
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CPUMotherboardRAMHard Drive
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post #5 of 8
It could be a motherboard related issue there. I'm not certain, but I would assume that your OS in high performance mode is triggering your multiplier to ramp up at a lower threshold. I had a similar problem with my rig, but it was bios related.. not sure if any of that helps lol
post #6 of 8
You can disable Speed step in Bios should fix it
post #7 of 8
Thread Starter 
Thanks for the suggestion but I have it that set to ON on purpose so I'm not running my OC clock/voltages to it on idle. I'm mostly interested in why it is behaving differently between High and Balanced power settings with the same settings.
Andromeda
(18 items)
 
   
CPUMotherboardGraphicsRAM
i5-3570k [4.5Ghz] Z77X-UP5TH EVGA GTX 670FTW Corsair Vengeance 4x4 16GB 
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Samsung 7200 500GB Samsung 830 120GB  Corsair H100 Windows 8.1 x64 
MonitorKeyboardPowerCase
Samsung 27'' P2770 K90 Corsair HX850W Carbide 500R 
MouseMouse PadAudioAudio
M95 Vespula Maverick Audio Tubemagic D1 DAC/AMP AKG K550 Headphones  
Audio
Schiit Modi/Magni  
CPUMotherboardRAMHard Drive
A8-3850 ASUS F1A75-M PRO Kingston HyperX 1866 9-10-9-24-1  Samsung 7200 500GB 
OSMonitorKeyboardPower
Win 8 x64 ASUS VE247H Razer Lycosa Corsair TX650 
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Andromeda
(18 items)
 
   
CPUMotherboardGraphicsRAM
i5-3570k [4.5Ghz] Z77X-UP5TH EVGA GTX 670FTW Corsair Vengeance 4x4 16GB 
Hard DriveHard DriveCoolingOS
Samsung 7200 500GB Samsung 830 120GB  Corsair H100 Windows 8.1 x64 
MonitorKeyboardPowerCase
Samsung 27'' P2770 K90 Corsair HX850W Carbide 500R 
MouseMouse PadAudioAudio
M95 Vespula Maverick Audio Tubemagic D1 DAC/AMP AKG K550 Headphones  
Audio
Schiit Modi/Magni  
CPUMotherboardRAMHard Drive
A8-3850 ASUS F1A75-M PRO Kingston HyperX 1866 9-10-9-24-1  Samsung 7200 500GB 
OSMonitorKeyboardPower
Win 8 x64 ASUS VE247H Razer Lycosa Corsair TX650 
CaseMouse
LIAN LI PC-V351 Razer Deathadder 
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Reply
post #8 of 8
By setting the CPU settings in High Performance to the same as Balanced, you have basically made two Balanced profiles. Those CPU settings are what keeps the CPU speed from changing, if you make the min CPU 5% in High Performance, than it is going to act the same as it does in Balanced. Change the min CPU back to 100% and it'll stay the same.

But actually, even in High Performance mode, the frequency is still going to change as long as EIST is enabled. It's just that CPU-Z won't show it. Watch it with Real Temp though, and you'll see. But really, why do you care if it is bouncing around all the time? That's what it is supposed to do.
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