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How to calculate how much amperage and wattage your CPU is pulling?

post #1 of 23
Thread Starter 
Software doesn't tell me so how do you calcuate this?
 
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Gsvlip Dudyrm
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Oda'maksv
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post #2 of 23
I don't think it's possible for the CPU alone.
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post #3 of 23
http://extreme.outervision.com/psucalculatorlite.jsp

Has a little overclocking section that tells you the approximate wattage it should pull at certain voltages and frequencies.
post #4 of 23
Using an ammeter on the +12v ATX four or eight pin cable will give you a number close to the amps the CPU is drawing. Multiply that by the real CPU voltage and you have a good estimate of the wattage.
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post #5 of 23
Thread Starter 
Quote:
Originally Posted by Blameless View Post
Using an ammeter on the +12v ATX four or eight pin cable will give you a number close to the amps the CPU is drawing. Multiply that by the real CPU voltage and you have a good estimate of the wattage.
would a multimeter work to measure amperage?
 
Gsvlip Dudyrm
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Oda'maksv
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CPUMotherboardGraphicsRAM
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Gsvlip Dudyrm
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Oda'maksv
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Samsung 850 Pro 1TB Seagate 2TB H105 EVGA Hybrid GPU cooler 
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Bitfelix Prodigy Logitech G400 Razer Goliath AKG A701 
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Hard DriveHard DriveOptical DriveOS
Samsung 830 Evo 128GB 2x 2TB  Some DVD drive OSX 10.10.4 
MonitorPowerCaseMouse
Asus 1080P Crap TX 750 HAF 922 G400s 
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Apple Keyboard Xbox One controler 
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post #6 of 23
HW Monitor and Everest report this, although I'm not sure how accurate they are.
post #7 of 23
Whole System -

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post #8 of 23
Thread Starter 
I don't want the whole system

What lines do you measure for amperage?
Edited by Lord Xeb - 8/5/11 at 3:04pm
 
Gsvlip Dudyrm
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Oda'maksv
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Core i5 750 3.99 (190x21) 1.376v Load ASUS P7P55d-E Pro GTX 670 FTW <- Poor overclocker :( 8GB (4x2GB) G.Skill DDR3 1600 
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Samsung 830 Evo 128GB 2x 2TB  Some DVD drive OSX 10.10.4 
MonitorPowerCaseMouse
Asus 1080P Crap TX 750 HAF 922 G400s 
Mouse PadOther
Apple Keyboard Xbox One controler 
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C2D 2,26GHz under volted @ .978v 8GB  Crucial M4 64GB SSD 500GB Scorpio Black 
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Gsvlip Dudyrm
(15 items)
 
Oda'maksv
(9 items)
 
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Samsung 850 Pro 1TB Seagate 2TB H105 EVGA Hybrid GPU cooler 
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Windows 10 Asus MG279Q - 24" 144Hz 1080p Filco Majestic II w/ Cherry Reds Seasonic X 760W 
CaseMouseMouse PadAudio
Bitfelix Prodigy Logitech G400 Razer Goliath AKG A701 
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JDS Labs Objective 2 JDS Labs ODAC 
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Core i5 750 3.99 (190x21) 1.376v Load ASUS P7P55d-E Pro GTX 670 FTW <- Poor overclocker :( 8GB (4x2GB) G.Skill DDR3 1600 
Hard DriveHard DriveOptical DriveOS
Samsung 830 Evo 128GB 2x 2TB  Some DVD drive OSX 10.10.4 
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post #9 of 23
Quote:
Originally Posted by Princess Garnet View Post
HW Monitor and Everest report this, although I'm not sure how accurate they are.
^ This.
     
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post #10 of 23
Quote:
Originally Posted by Blameless View Post
Using an ammeter on the +12v ATX four or eight pin cable will give you a number close to the amps the CPU is drawing. Multiply that by the real CPU voltage and you have a good estimate of the wattage.
That's incorrect. That would give you the amperage at +12V. That's then stepped down to ~1.**V for the CPU, and when the voltage drops the current goes up.
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