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I7 2600K (ME4) big voltage spike during idle (LLC ultra high)

post #1 of 39
Thread Starter 
Im getting this from Cpuz @ idle 4.8ghz,

Vcore @BIOS - set manual 1.43

In windows, i got 2 readings, one is 1.432, which is perfectly fine, but then it spike to 1.440 ! WHAT?? and after few seconds drop to 1.432 again, and keep going like this, up and down...how come there is such a big diffeence, is this normal on ASUS mobos? do you guys get similar readings with LLC to ultra high? please report back your results! i dont like this at all

BIOS is 1850.
My System
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CPUMotherboardGraphicsRAM
i5 2500K @4.7ghz(1.39v) 24/7 +D14 Asus P8Z77-V Sapphire R9 290 Tri X @1160/1600 8GB HyperX @2133 
Hard DriveOptical DriveCoolingOS
WD Blue EZEX 1TB & Samsung 840 Pro 256GB (OS) Asus Nocuta NH D14 WIN 7 64 Ultimate 
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My System
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CPUMotherboardGraphicsRAM
i5 2500K @4.7ghz(1.39v) 24/7 +D14 Asus P8Z77-V Sapphire R9 290 Tri X @1160/1600 8GB HyperX @2133 
Hard DriveOptical DriveCoolingOS
WD Blue EZEX 1TB & Samsung 840 Pro 256GB (OS) Asus Nocuta NH D14 WIN 7 64 Ultimate 
MonitorKeyboardPowerCase
NEC 2490wuxi (rev 1) Logitech Wave Cooler Master Vanguard 850W Cooler Master HAF 932 
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post #2 of 39
I get the same, i have a voltage of 1.39 in bios at 4.8ghz but its 1.416v when running prime95 or linxs

Using a maximus gene
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CPUMotherboardGraphicsRAM
3930k@4.8ghz Rampage IV extreme 3 way crossfire 290x 16gb Mushkin @ 2133mhz Cas9 
Hard DriveOptical DriveCoolingOS
4x2tb 1x180gbIntelSSD 1x256gbCrucialM4 Asus external DVD writer 1x360 xpsc 1x480 Blackice GTX2 Win7 x64 Ultimate Edition 
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LG 24m77 23.3inch 144mhz Gaming monitor Strider 1500watt Fractal Case, Soon to be Corsair Air 540r Corsair gaming mouse 
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My System
(14 items)
 
  
CPUMotherboardGraphicsRAM
3930k@4.8ghz Rampage IV extreme 3 way crossfire 290x 16gb Mushkin @ 2133mhz Cas9 
Hard DriveOptical DriveCoolingOS
4x2tb 1x180gbIntelSSD 1x256gbCrucialM4 Asus external DVD writer 1x360 xpsc 1x480 Blackice GTX2 Win7 x64 Ultimate Edition 
MonitorPowerCaseMouse
LG 24m77 23.3inch 144mhz Gaming monitor Strider 1500watt Fractal Case, Soon to be Corsair Air 540r Corsair gaming mouse 
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Glass Icemat 
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post #3 of 39
Thread Starter 
Thanks for posting, but im more itnterested in idle voltage readings. What is your lower/higher voltage spike - reading? and are you using ultra high LLC?

You got like +0.2 spike, i got 0.8 which is alot worse, but yea could be different under load.
My System
(15 items)
 
  
CPUMotherboardGraphicsRAM
i5 2500K @4.7ghz(1.39v) 24/7 +D14 Asus P8Z77-V Sapphire R9 290 Tri X @1160/1600 8GB HyperX @2133 
Hard DriveOptical DriveCoolingOS
WD Blue EZEX 1TB & Samsung 840 Pro 256GB (OS) Asus Nocuta NH D14 WIN 7 64 Ultimate 
MonitorKeyboardPowerCase
NEC 2490wuxi (rev 1) Logitech Wave Cooler Master Vanguard 850W Cooler Master HAF 932 
MouseMouse PadAudio
Logitech G5 Cooler Master Xonar STX+ HD595 
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My System
(15 items)
 
  
CPUMotherboardGraphicsRAM
i5 2500K @4.7ghz(1.39v) 24/7 +D14 Asus P8Z77-V Sapphire R9 290 Tri X @1160/1600 8GB HyperX @2133 
Hard DriveOptical DriveCoolingOS
WD Blue EZEX 1TB & Samsung 840 Pro 256GB (OS) Asus Nocuta NH D14 WIN 7 64 Ultimate 
MonitorKeyboardPowerCase
NEC 2490wuxi (rev 1) Logitech Wave Cooler Master Vanguard 850W Cooler Master HAF 932 
MouseMouse PadAudio
Logitech G5 Cooler Master Xonar STX+ HD595 
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post #4 of 39
0.008v is a huge spike?
Silence is Golden
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Intel i5 2500k @ 4.5Ghz Asus P8P67 Deluxe B3 EVGA GTX 680 G.Skill RipjawsX 2x4GB 
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Silence is Golden
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post #5 of 39
Thread Starter 
From 1.43 to 1.44 yes it is, ok maybe not huge but big for sure
Edited by psyside - 8/4/11 at 10:11pm
My System
(15 items)
 
  
CPUMotherboardGraphicsRAM
i5 2500K @4.7ghz(1.39v) 24/7 +D14 Asus P8Z77-V Sapphire R9 290 Tri X @1160/1600 8GB HyperX @2133 
Hard DriveOptical DriveCoolingOS
WD Blue EZEX 1TB & Samsung 840 Pro 256GB (OS) Asus Nocuta NH D14 WIN 7 64 Ultimate 
MonitorKeyboardPowerCase
NEC 2490wuxi (rev 1) Logitech Wave Cooler Master Vanguard 850W Cooler Master HAF 932 
MouseMouse PadAudio
Logitech G5 Cooler Master Xonar STX+ HD595 
  hide details  
Reply
My System
(15 items)
 
  
CPUMotherboardGraphicsRAM
i5 2500K @4.7ghz(1.39v) 24/7 +D14 Asus P8Z77-V Sapphire R9 290 Tri X @1160/1600 8GB HyperX @2133 
Hard DriveOptical DriveCoolingOS
WD Blue EZEX 1TB & Samsung 840 Pro 256GB (OS) Asus Nocuta NH D14 WIN 7 64 Ultimate 
MonitorKeyboardPowerCase
NEC 2490wuxi (rev 1) Logitech Wave Cooler Master Vanguard 850W Cooler Master HAF 932 
MouseMouse PadAudio
Logitech G5 Cooler Master Xonar STX+ HD595 
  hide details  
Reply
post #6 of 39
With Ultra High LLC it's actually quite normal bud, Extreme LLC would just spike it above what you have set it to in the BIOS which is not a good idea. For example my voltage is set manually to 1.488 it idles at 1.484/1488 and loads 1.472-1.480v. If I set it to extreme it spikes the votlage above 1.488v which I do not like.

Don't worry about it
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i5 2500K [5ghz 1.44v 24/7] Asus Maximus IV Extreme SLI GTX 460 @ 920/1840/4100 [1.11v] 4GB Dominator GT @ 2133mhz CL8 [1.65v] 
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Intel X25-M G2 80GB 3x Samsung F3 500GB RAID 0 EK Supreme HF Full Copper Windows 7 Ultimate 64bit 
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it looks alive
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Sandy Transformed
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CPUMotherboardGraphicsRAM
i5 2500K [5ghz 1.44v 24/7] Asus Maximus IV Extreme SLI GTX 460 @ 920/1840/4100 [1.11v] 4GB Dominator GT @ 2133mhz CL8 [1.65v] 
Hard DriveHard DriveCoolingOS
Intel X25-M G2 80GB 3x Samsung F3 500GB RAID 0 EK Supreme HF Full Copper Windows 7 Ultimate 64bit 
MonitorPowerCaseAudio
LG42SL9500 42" 1080p [Surround Soon] XFX XXX Edition 650w Xigmatec Elysium JVC HA-RX700 [foam mod] 
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post #7 of 39
Thread Starter 
Thanks for the replays guys, but the voltage already spike for like 0.9 over BIOS setting at idle, or maybe i should only care for load voltages? as many users said, idle with no cpu stress voltage is not same as load with 100% cpu usage, does this sound right?

Thanks.
My System
(15 items)
 
  
CPUMotherboardGraphicsRAM
i5 2500K @4.7ghz(1.39v) 24/7 +D14 Asus P8Z77-V Sapphire R9 290 Tri X @1160/1600 8GB HyperX @2133 
Hard DriveOptical DriveCoolingOS
WD Blue EZEX 1TB & Samsung 840 Pro 256GB (OS) Asus Nocuta NH D14 WIN 7 64 Ultimate 
MonitorKeyboardPowerCase
NEC 2490wuxi (rev 1) Logitech Wave Cooler Master Vanguard 850W Cooler Master HAF 932 
MouseMouse PadAudio
Logitech G5 Cooler Master Xonar STX+ HD595 
  hide details  
Reply
My System
(15 items)
 
  
CPUMotherboardGraphicsRAM
i5 2500K @4.7ghz(1.39v) 24/7 +D14 Asus P8Z77-V Sapphire R9 290 Tri X @1160/1600 8GB HyperX @2133 
Hard DriveOptical DriveCoolingOS
WD Blue EZEX 1TB & Samsung 840 Pro 256GB (OS) Asus Nocuta NH D14 WIN 7 64 Ultimate 
MonitorKeyboardPowerCase
NEC 2490wuxi (rev 1) Logitech Wave Cooler Master Vanguard 850W Cooler Master HAF 932 
MouseMouse PadAudio
Logitech G5 Cooler Master Xonar STX+ HD595 
  hide details  
Reply
post #8 of 39
Dont trust in-OS monitoring of voltage TOO much.
Its not exactly the most accurate thing in the universe.
If you want to see what your actually using, you will need a voltmeter and some other toys.
I wouldn't worry. When my computer is Idle I see voltage fluctuations in HWMonitor all the time, and I definitely dont have a crappy power supply.
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Micro Mule
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i7 6700k MSI Z170I Gaming Pro AC Gigabyte GTX 1070 G1 Gaming 16GB GSkill Ripjaws V DDR4 3200 
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250GB Crucial MX200, 960GB Adata , 1TB WD Black Noctua NH-L12 LG 27UD68 4k Seasonic M12II 620W 
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post #9 of 39
Quote:
Originally Posted by psyside View Post
Thanks for the replays guys, but the voltage already spike for like 0.9 over BIOS setting at idle, or maybe i should only care for load voltages? as many users said, idle with no cpu stress voltage is not same as load with 100% cpu usage, does this sound right?

Thanks.
yeah sounds right

Mine at this moment is running 1.6ghz and th wattage is only 10w or so, under full load it jumps just over 110w If I remember.
it looks alive
(17 items)
 
Sandy Transformed
(69 photos)
 
CPUMotherboardGraphicsRAM
i5 2500K [5ghz 1.44v 24/7] Asus Maximus IV Extreme SLI GTX 460 @ 920/1840/4100 [1.11v] 4GB Dominator GT @ 2133mhz CL8 [1.65v] 
Hard DriveHard DriveCoolingOS
Intel X25-M G2 80GB 3x Samsung F3 500GB RAID 0 EK Supreme HF Full Copper Windows 7 Ultimate 64bit 
MonitorPowerCaseAudio
LG42SL9500 42" 1080p [Surround Soon] XFX XXX Edition 650w Xigmatec Elysium JVC HA-RX700 [foam mod] 
  hide details  
Reply
it looks alive
(17 items)
 
Sandy Transformed
(69 photos)
 
CPUMotherboardGraphicsRAM
i5 2500K [5ghz 1.44v 24/7] Asus Maximus IV Extreme SLI GTX 460 @ 920/1840/4100 [1.11v] 4GB Dominator GT @ 2133mhz CL8 [1.65v] 
Hard DriveHard DriveCoolingOS
Intel X25-M G2 80GB 3x Samsung F3 500GB RAID 0 EK Supreme HF Full Copper Windows 7 Ultimate 64bit 
MonitorPowerCaseAudio
LG42SL9500 42" 1080p [Surround Soon] XFX XXX Edition 650w Xigmatec Elysium JVC HA-RX700 [foam mod] 
  hide details  
Reply
post #10 of 39
Thread Starter 
I just changed from ultra high to high, and i have enabeled cpu spread spectrum, (which made the boot longer?)

And i got this,

fixed idle votlage of 1.424, @ BIOS is 1.43, i would say much better...but wonder if im stable like this, also does running a pc for longer period (before restart) make cpu voltage change more often then after restart? because it seem strange to have such a stable voltage and yet still using LLC at 50%, could be some bug or something? : /

Can you please guys post vcore fluctation at idle? thanks in advance.
Edited by psyside - 8/4/11 at 10:32pm
My System
(15 items)
 
  
CPUMotherboardGraphicsRAM
i5 2500K @4.7ghz(1.39v) 24/7 +D14 Asus P8Z77-V Sapphire R9 290 Tri X @1160/1600 8GB HyperX @2133 
Hard DriveOptical DriveCoolingOS
WD Blue EZEX 1TB & Samsung 840 Pro 256GB (OS) Asus Nocuta NH D14 WIN 7 64 Ultimate 
MonitorKeyboardPowerCase
NEC 2490wuxi (rev 1) Logitech Wave Cooler Master Vanguard 850W Cooler Master HAF 932 
MouseMouse PadAudio
Logitech G5 Cooler Master Xonar STX+ HD595 
  hide details  
Reply
My System
(15 items)
 
  
CPUMotherboardGraphicsRAM
i5 2500K @4.7ghz(1.39v) 24/7 +D14 Asus P8Z77-V Sapphire R9 290 Tri X @1160/1600 8GB HyperX @2133 
Hard DriveOptical DriveCoolingOS
WD Blue EZEX 1TB & Samsung 840 Pro 256GB (OS) Asus Nocuta NH D14 WIN 7 64 Ultimate 
MonitorKeyboardPowerCase
NEC 2490wuxi (rev 1) Logitech Wave Cooler Master Vanguard 850W Cooler Master HAF 932 
MouseMouse PadAudio
Logitech G5 Cooler Master Xonar STX+ HD595 
  hide details  
Reply
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