Voltage is the measure of electrical current. This tag should only be used when asking questions related to powering computers and peripheral equipment. It is not for asking about voltage issues related to the commercial supply of power to your home or office.

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Can I run a router with a lower voltage power adapter?

The power adapter for my Linksys WRT54GL v1.1 router died - its output was 10V, 1000mA. I've tried using a replacement adapter (7.5V, 1000mA) and so far it works. Is this situation stable, or should ...
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Does the power consumption for non-scaling processor vary from idle to busy?

Even though newer processors come with scaling (SpeedStep, Cool'n'Quiet), some computers have motherboards with outdated bios which do not support the feature. Thus, they run at full clock speed. Even ...
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Do motherboards automatically set memory voltage?

Let's say I have a motherboard whose stock PC3200 DDR memory modules are fed a standard 2.6 V. I now replace them with performance sticks, which according to the manufacturer need to get the "...
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Usefulness of multi-core in the context of power-efficient computing

I'm considering options for a new portable PC. I'd like to keep power utilization at a minimum, while being able to run batch jobs as quickly as possible. Batch jobs I can generally parallelize ...
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Windows 7 power management — vCore goes from 0.9V to ~1.30V

I have a brand new computer (built yesterday) with an AMD Phenom II X4 965 on an ASUS M4A89GTD Pro motherboard. Today I noticed heavy vCore fluctuations: between 0.90V (idle) and ~1.30V (load). CPU-Z ...
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Should I be concerned about this voltage reading (via SpeedFan)?

Been having computer issues. (My computer has been freezing the past couple of days, but in a rather odd manner: once it starts, each program freezes after a couple of seconds of being used. Note that ...
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Same voltage, different amperage for two power supplies

I've just plugged an 18.5V 6.4A HP power supply into an HP laptop; I normally use an 18.5V 3.5A power supply. Since the connector fit, I figured I'd give it a go... so far no funny smells or fires. ...
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Random lockups with my new build

I have been having random lockups with my new build. The game will lock up, then the monitor refreshes and it goes back to normal... Lowering the graphic settings helped significantly in WoW, but now ...
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Very low power supply voltages

My computer is fairly modest in terms of power consumption: 4 7200 RPM SATA-II hard drives An IDE DVD-writer Four 80mm case fans Two 95mm heatsink fans Intel Core i7-920 2.66 GHz (OC to 3.80GHz) ...
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PC power supply & normal range for voltages reported in BIOS hardware monitor?

I'm trying to diagnose whether my computer has an ample power supply. Sometimes when I play a video-intensive game, both monitors lose the video signal, even though the computer remains on and sound ...
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Hooking up my power switch/reset switch/LEDs

I'm working on building a computer (first time for me). There are several plugs that I need to connect to the motherboard (Power LED, reset switch, etc). Of the two wires, they are either: Color ...
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What are good values for PSU voltages?

I have an odd computer I'm trying to fix that will crash only during the setup of an OS(crashes on every OS I've tried so far) It's not overheating and it is stripped down as much as possible and I've ...
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Does the speed of memory define its voltage?

What I'm asking here is, if I order PC3200 memory is it all going to be 1.8V, or will some be 2.5, some 1.8, etc... I don't mean variation within a specific part #, but rather across part numbers, is ...