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More MHz eats more Watt @ same Volt?

Feb 10, 2007
2,404 (0.60/day)
Oulu, Finland
System Name Enslaver :)
Processor Intel i5 3570K Ivy Bridge, 4GHz no voltage increase OC
Motherboard ASRock Z77 Extreme4
Cooling CPU: Noctua NH-D14, Case: mix of different fans
Memory 24GB DDR3 1866MHz- mix Samsung green 1600MHZ OC + Kingston Fury 1866MHz stock
Video Card(s) ASUS GTX 1080 A8G Strix + disbled Intel HD4000
Storage 500GB Samsung Evo 850 SSD, internal WD Red 4TB for storage
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Case Corsair 800D
Audio Device(s) Over HDMI
Power Supply Quite new Corsair RM850x
Mouse ROG Gladius
Keyboard QPAD MX-50 mechanical
Software Windows 10 Pro x64

I am somehow going green lately after some being pissed off at my power company about rising price last 12 month 3 times (I changed my power company 2 weeks ago) and some pain in the ass bills.

Now I would like to know if my "green" OC off more MHz on my Q6600 but default VCore makes sense.

When I had an Watt-meter some weeks ago I didn´t notice any difference. I had approx 150W consuption in XPs desktop @ idle and no more Watts when applying a 500MHz OC that was stable at default VCore.

I had SpeedStep on and it lowered the MHz to about 500MHz less than it would with the normal 2400MHz.

So my logic says that more MHz don´t use up more Watt if not feeded intentionally?

Last edited:


where the hell are my stars
Jul 23, 2006
26,759 (6.37/day)
System Name Team Blue
Processor 5960X@4.8 1.42v
Motherboard Asus X99M-WS
Cooling EK Supremecy EVO, MCR220-Stack+MCR220+MCR320, D5-PWM+EK X-RES 140
Memory 4x8GB G.Skill Trident Z 3200 CL16
Video Card(s) (2) EVGA SC BLACK 1080Ti's+ EVGA reference 1080Ti soon to be under water
Storage Samsung SM951 512GB, Samsung PM961 512GB
Display(s) Dell UP2414Q 3840X2160@60hz
Case Caselabs Mercury S5
Audio Device(s) Fischer HA-02->Fischer FA-002W High edition/FA-003/Jubilate/FA-011 depending on my mood
Power Supply Seasonic Prime 1200w
Mouse Thermaltake Theron
Keyboard Thermaltake Poseidon ZX
Software W10P
Benchmark Scores Zoom zoom mofo
Jul 11, 2010
140 (0.05/day)
Processor i7-2500K @ 4.5 GHz
Motherboard Gigabyte GA-Z68XP-UD4
Cooling EK Supreme HF
Memory Kingston HyperX Genesis 2 * 4 GB
Video Card(s) Radeon HD 7950
Storage OCZ Agility 3
Case Bitfenix Shinobi XL
Power Supply Super Flower SF-700P14XE
I did some testing with my Q9550 system, Win 7 64-bit:
                  idle, C-states & EIST on  idle, EIST on  idle, C-states & EIST off   full load, Linx 
2.83 GHz           95 W                            107 W                   108 W                    183 W
3.61 GHz           99 W                            109 W                   109 W                    208 W
4.25 GHz                                                                   131 W                    321 W
Lower speeds were using stock 1.225 Vcore, 4.25 GHz was using 1.3375 V. Seems that as long as you don't touch Vcore setting power usage doesn't increase very much.


Lab Extraordinaire
May 7, 2009
5,626 (1.77/day)
London, UK
System Name Desktop | Server
Processor Intel i7 2700k @ 4.4GHZ | AMD 5350 @ 2500MHZ
Motherboard Asus P7Z77-V Pro | Asus AM1I-A
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Memory Crucial Ballistix 2x8GB CL8 1600MHZ | Corsair Vengence 2x4GB CL9 1600MHZ
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Case Fractal Design R5 | CM Elite 110
Audio Device(s) Asus Xonar D1 w/Otone Stilo 5.1 and Creative Fatal1ty headset
Power Supply EVGA Supernova 850 G2| Corsair CX430M
Mouse Razer Imperator 2012
Keyboard Corsair K90
Software Windows 7 SP1 X64 | Ubuntu 16.04LTS