The voltage tag has no wiki summary.
3
votes
1answer
4k views
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 ...
0
votes
1answer
34 views
Overclocking AMD Sempron +2400
Basically, I wanna ask is there a safe way to overclock the mentioned processor to 2.0Ghz (Stock - 1.67Ghz, Single core). Now it's running @ 1.8Ghz and 1.5something V, as I run it @ 2.0Ghz it becomes ...
2
votes
1answer
64 views
Higher voltage requirement for lower clock frequency
Is there any reason for a CPU to require a higher Vcore to achieve stability when running at a certain speed, than the Vcore that the same chip requires for stability when running at a higher speed? ...
3
votes
2answers
93 views
How to optimize PLL voltage
I am overclocking my Core i7 (Ivy Bridge 3770K), aiming for a moderate overclock.
Currently I have it easily stable at a pleasant 4.4GHZ - BCLK defaulted at 100.00MHz, with the multiplier set to x44. ...
0
votes
3answers
50 views
What negatives can occur when installing mismatched memory?
Specifically, if I have a machine spec'd for 1.5V and I install 1.3V RAM modules, what side effects can occur?
2
votes
1answer
464 views
How do I change GPU core voltage?
I've got an AMD Radeon 6790 with Mint 14, and I'm experimenting with over-clocking the GPU for Bitcoin mining. Right now, I'm running it at 990/130 stable at stock voltage (I think 1.185V), but I ...
1
vote
2answers
208 views
Power supply bad with good voltage?
I am trying to drive out the reason I am having some hard drive "hard resetting link" error problems on a Linux Debian box.
I am trying to eliminate the power supply as a problem in trouble shooting, ...
1
vote
1answer
68 views
Insufficient power from an adapter
Would not having enough power (or voltage or amperage) from an adapter make a laptop no longer charge/boot up (if the battery is out of power)? What about causing shorts? And would using a different ...
0
votes
0answers
59 views
How to test laptop adapter voltage with a Digital Voltage Detection Screwdriver Test Pen
Couple of days ago I replaced my laptop adapter, and when I use that, some amount of current discharges through the sockets,ports...etc (i.e. audio out).
So I checked the adapter with a Test Pen (I ...
0
votes
1answer
75 views
Which software to log voltage readings? [duplicate]
Possible Duplicate:
What is a good tool to monitor my computer’s sensors?
Utility for monitoring fan speed etc
I need to test my windows system when playing 3D intensive games and would ...
-1
votes
1answer
34 views
rated voltage on power blocks [closed]
I recently converted a beer light (plexiglass) using 20 LED's, resisters and a power block rated at 9V but it burned out the LED's. I When i tested the adapter it was putting out 14V's.
Question: ...
1
vote
1answer
62 views
PC loading programs slower than normal after voltage change [closed]
I always turned on my PC at 220V, it always worked normally. Today I turned my PC at 110V and it was very slow to load any program. I turned it back on at 220V but it is still very low to load ...
1
vote
1answer
2k views
Using adapter with higher output voltage?
My adapter is broken, and I'm currently using another one while I'm waiting for a new adapter.
The input voltage and amps are the same for both adapters, while there are difference in the output ...
1
vote
0answers
100 views
1.8 VDC POWER remains on USB after SHUTDOWN (HP Compaq Pro 4300 SFF - Product ID: QZ219AV)
I am having unexpected opportunities with a USB Device failing to properly initialize on startup after a shutdown, which seems to be caused by residual power remaining on my USB Ports (after ...
0
votes
1answer
130 views
240v speakers into 110v outlet
Can I plug a pair of 240v computer speakers into 110v wall outlet?
Plugging in the reverse (110v speaker in to 220v wall outlet) I assume would destroy the device in question but if I provide lower ...
0
votes
3answers
2k views
How does voltage fluctuation affect a laptop
I own an Acer Aspire 3680. In the past 2 years, I have given, my laptop for service due to the same kind of problem. Last year at the same time, I gave my laptop to the service center. They repaired ...
2
votes
2answers
85 views
Serious voltage and temperature problems
My computer has been acting up when I play games so I wanted to look into why.
Issue 1: GPU Temp
According to afterburner and speedfan my 8800GTX idles at 90 degrees and then when playing games ...
1
vote
1answer
107 views
UPS switches to battery power when plugging in devices?
Over the past week or so I've had my UPS switch over to battery power briefly when plugging in new devices (possibly limited to just AC -> DC chargers, but haven't tested anything else). I had ...
0
votes
1answer
162 views
Will my laptop be ok with this different laptop charger? [duplicate]
Possible Duplicate:
Charging laptop with non-original charger
How can I tell if an AC adapter is compatible with my laptop?
So the original laptop charger broke and I switched to a ...
0
votes
1answer
356 views
how to use multiple RAM chips with different timings and voltages
Last thanksgiving, I built a computer using this RAM. I have decided to upgrade to 8GB, so I just bought this.
As you can see, the 2 kits have different timings, voltages, and CLs. Is it possible ...
0
votes
1answer
36 views
Manually starting a PSU lowers the output Voltage
I have a PSU. When I start it using a motherboard, I get a little over 5 and 12 volts on the respective lines. But when I manually start it (by connecting PS_ON to ground), I get only 4.2 Volts on the ...
3
votes
1answer
776 views
Is it safe to use a laptop AC adapter with 220V power if the AC cable is not rated for 220V?
The AC adapter supplied with my laptop is designed to accept voltage in the range of 100-240VAC at 50-60Hz, but the AC cable that plugs into the adapter unit itself is only rated to 125VAC 7.5A 2.5A. ...
2
votes
2answers
185 views
Weird voltage issues - intermittent low 5V line
My computer has developed a strange ailment: when I turn it on, the 5V power line from the PSU is very low, hovering at around 4.2V. This is intermittent however, sometimes it jumps back up to 4.98V.
...
2
votes
3answers
9k views
Laptop battery: is voltage really important to respect?
I got an Acer Aspire 5100 and I just bought a new battery (after the stock battery just died yesterday). But I saw something after buying and I'm wondering whether it's really important or not.
My ...
0
votes
0answers
349 views
Laptop battery 10.8V vs 11.1V
I've had my HDX 16 for about 3 years now, and I've been using the batteries quite intensively last year. I'm getting warnings about the battery needing to be replaced before boot and in Windows.
...
1
vote
1answer
176 views
What are the costs and benefits of using 12V-only motherboards? [closed]
According to my research, it sounds as though power efficiency concerns in recent years have driven some hardware manufacturers to create different power supplies and motherboards which are ...
0
votes
1answer
1k views
Same voltage but less amps [closed]
I just bought a Galaxy Note mobile but was wondering in using a generic charger when I am at the office.
In resume I want to use a charger with the same voltage (5V) and an output of .7 A. The ...
2
votes
2answers
179 views
CPUs: more transistors, less voltage?
I have read in an article that newer CPU cores have narrower circuit tracks so more transistors can fit in the core. The author wrote that since there are more transistors, the voltage is reduced.
...
1
vote
2answers
254 views
HDD is very slow after voltage drop
The HDD is Seagate Barracuda 7200.7 160 Gbytes
Model ST3160023A. Of course it is not SATA.
I once connected it to the USB via special adapter IDE-to-USB, and a separate power unit. The voltage drop ...
1
vote
2answers
162 views
Using alternate rating laptop charger
I am using Sony Vaio and laptop charger burned its rating was 19.5V-3.9A, i am trying to find the same model but I have been only been able to find one with the rating 19.5V-4.7A. Can I use this, any ...
9
votes
3answers
844 views
Can I have too high a PSU power rating?
I have just ordered a 650 W PSU for my computer which previously had a 300 W, in order to install a more powerful graphics card. However, I didn't check whether anything would blow up ...
3
votes
1answer
369 views
Intel DH61AG CPU, fans, and voltages not reading in BIOS
I'm looking for the cause and/or fix of an issue when during start up of the DH61AG board the fans go full speed as they normally do but stay at full speed rather than slowing. In the BIOS the PC ...
0
votes
1answer
290 views
Voltage on PC case is making problem
With test light I can detect voltage on my desktop pc case and I believe it's the reason that my HDD fails some often or my pc hangs. When I connect my case to ground (metal door frame) it works with ...
1
vote
3answers
1k views
Can I use 7.5VDC @ 1.0A on 6V @ 2.0A device?
Just what the title asks....
Can I use 7.5VDC @ 1.0A on 6V @ 2.0A device?
Anyone know the answer?
0
votes
1answer
101 views
How do you resolve a supply voltage high warning on an optical SFP in a router?
Here is the error showing in my log file on an Alcatel router:
5629 2012/01/15 02:41:24.81 EST MINOR: PORT #2030 Base Port 1/2/8
"XFP/SFP DDM (supplyVoltage-high-warning) raised"
When I issue the ...
0
votes
1answer
760 views
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)
...
0
votes
1answer
350 views
Have a 40W power supply - will it power a laptop that needs 65W? (18.5v 3.5A (=65W))
Have a 40W power supply - will it power a laptop that needs 65W?
I know that the basic calculation, voltage x amps = required wattage, so 18.5v x 3.5A =65W
I realise that it should only draw the ...
9
votes
4answers
4k views
Is it better to use an offset or manually set CPU voltage (with respect to CPU longevitity)?
The Background:
I recently built a new computer, and I'm working with the ASUS P8Z68-V Pro motherboard and Intel i7 2600k processor. While this question does not pertain specifically to my hardware, ...
3
votes
1answer
557 views
PSU voltage with multimeter
My PSU started making some noises even when the fans were stopped. I also had USB problems (two USB devices burned) so I checked the PSU voltages with a multimeter.
I removed the PSU and connected it ...
8
votes
1answer
1k views
Charge Apple computers bought in USA to use in Europe
I bought an Apple MacBook in the US and would like to use it in Italy. On the cable, it says: 2.5A 125V. What are the possible solutions to charge my computer? Use an adapter, a plug converter or an ...
1
vote
2answers
372 views
My dlink power supply broke, I found a similar one on old boxes. Is it going to damage my router if used (specs and pic inside)?
I have an old dlink wi-fi router to connect old 802.11g devices at home. It's power supply just fried after a storm.
Buying a new power supply is almost the same price as a used router like mine, and ...
0
votes
3answers
172 views
Laptop battery replacement possible?
I have the standard Acer Aspire one 532h-2Db, I am looking to upgrade the battery from a standard 6-cell to a 12-cell ( for more longer terms away from the mains ) and I've hit a problem, I cannot ...
1
vote
3answers
1k views
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 ...
2
votes
1answer
153 views
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 ...
1
vote
1answer
389 views
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 ...
2
votes
2answers
182 views
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 ...
0
votes
1answer
923 views
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 ...
1
vote
3answers
791 views
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 ...
1
vote
2answers
967 views
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.
...
5
votes
7answers
3k views
How do I lower power consumption of my computer
Ok my electricity bills are high and my Dad keeps shouting me for that (I use my computer over 20 hours per day). Below are the few things I am curious to know .
1) How do I lower my Computer Power ...
