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post #11 of 31
Yeah i get the same reading and 12+ is 11.98v.
    
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post #12 of 31
Quote:
Originally Posted by shinji2k View Post
Quote:
Software gets it's readings from the same chip the BIOS does, so to say readings from the BIOS would be more accurate would be a falsehood.

~Jon Gerow "jonnyGURU"

http://www.motherboards.org/articles/guides/1487_6.html
Considering I've seen software report voltages not even close to realistic, I'd say the statement isn't entirely accurate. Software, through improper coding or other reasons, can report voltages that aren't even close to what the sensor is giving out. Lost in translation, so to speak.

The statement implies that the BIOS can NEVER be more accurate than software. Saying that is illogical in nature. Because technically, they can.
    
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post #13 of 31
Quote:
Originally Posted by Choggs396 View Post
Considering I've seen software report voltages not even close to realistic, I'd say the statement isn't entirely accurate. Software, through improper coding or other reasons, can report voltages that aren't even close to what the sensor is giving out. Lost in translation, so to speak.

The statement implies that the BIOS can NEVER be more accurate than software. Saying that is illogical in nature. Because technically, they can.
BIOS = software. You say different software can report different voltages, can you prove this? Can you show repeatably that Windows based voltages are less accurate then the BIOS software and that BIOS values more accurately represent the actual voltage of the PSU as verified by a multimeter, recorded at the exact same millisecond? Voltages are never in steady state because of the way switching power supplies operate. On top of that, voltages fluctuate depending on load and temperature. So if you can prove to me that software (BIOS vs. Windows) can have different readings at the exact same point in time, I'm all ears (and eyes).
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post #14 of 31
Thread Starter 
Thanks everyone for the reply. I was worried about the 5v reading for a bit, but now I'm a bit relieved.

Thanks again for the responses!
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post #15 of 31
Quote:
Originally Posted by shinji2k View Post
BIOS = software. You say different software can report different voltages, can you prove this? Can you show repeatably that Windows based voltages are less accurate then the BIOS software and that BIOS values more accurately represent the actual voltage of the PSU as verified by a multimeter, recorded at the exact same millisecond? Voltages are never in steady state because of the way switching power supplies operate. On top of that, voltages fluctuate depending on load and temperature. So if you can prove to me that software (BIOS vs. Windows) can have different readings at the exact same point in time, I'm all ears (and eyes).
In the past I've seen software like Speedfan report PSU voltages that, if true, the computer wouldn't even BE RUNNING. Yet at the same time, the BIOS is reading voltages that reflect an actual ability for the computer to be on and functioning.

Is it possible that some software has the inability to read a sensor incorrectly? Of course it's possible. The coding of the software isn't infallible, and varies from program to program. Software can be programmed poorly. That would be human error. Which is known to occur.

You seem to be speaking in absolutes, which is highly illogical.

Is it possible the BIOS is reading the voltage correctly (or at least "more accurately"), yet a program in Windows isn't? Of course the possibility exists.
Edited by Choggs396 - 5/24/08 at 9:22pm
    
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post #16 of 31
I understand what you are talking about when Speedfan, Everest etc. is waaaay off. There is obviously something wrong with the values it is reading for that chipset/sensor. But for most of the time when the Windows software is programed correctly, can you really say there is a difference? The program is either reading the correct value or it isn't and it is clearly obvious when it is not.

edit: I should clarify what I mean by way off, like 8.5V for 12V. But if BIOS reads 12.05 and Speedfan says 12.10 at the same load and temperature, that is within an acceptable margin to me.
Edited by shinji2k - 5/24/08 at 9:28pm
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post #17 of 31
Quote:
Originally Posted by shinji2k View Post
I understand what you are talking about when Speedfan, Everest etc. is waaaay off. There is obviously something wrong with the values it is reading for that chipset/sensor. But for most of the time when the Windows software is programed correctly, can you really say there is a difference? The program is either reading the correct value or it isn't and it is clearly obvious when it is not.
Thank you for at least (passively) admitting the chance exists that Windows programs and BIOS readings aren't always the same.

I've worked on a number of computers. I've honestly seen the values in programs such as Speedfan, Everest, and others vary with a range of values compared to what the BIOS is putting out.

It's true the BIOS can be (relatively) accurate. It's also true the values in software coded by different of people can be (relatively) inaccurate. I've seen it myself.
    
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post #18 of 31
The point I am trying to make is that the sensor reads many different things, voltage, fan speed, etc. and then sends out a value for the corresponding reading. If the software is programmed improperly it will read the value for something unrelated and give out an useless number. As long as the software gets the value to read correctly, it will get the same voltages as the BIOS. But the problem is even if the software is correctly reading the voltage, the state of the computer will be different when in BIOS with a different load on it, resulting in different voltages. It is impossible to get a direct comparison between the values read in BIOS and the values read while in Windows which is why you can't prove that BIOS is more accurate (assuming software in Windows is reading the right value).
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post #19 of 31
Quote:
Originally Posted by shinji2k View Post
The point I am trying to make is that the sensor reads many different things, voltage, fan speed, etc. and then sends out a value for the corresponding reading. If the software is programmed improperly it will read the value for something unrelated and give out an useless number. As long as the software gets the value to read correctly, it will get the same voltages as the BIOS. But the problem is even if the software is correctly reading the voltage, the state of the computer will be different when in BIOS with a different load on it, resulting in different voltages. It is impossible to get a direct comparison between the values read in BIOS and the values read while in Windows which is why you can't prove that BIOS is more accurate (assuming software in Windows is reading the right value).
I wasn't trying to prove the BIOS is always more accurate. I was stating, from what I've seen, it can be. Again, I wasn't speaking in absolutes. (The bolded part of your statement speaks once again in absolutes.) The range of misreported voltages can vary.

There is a chance the BIOS can read voltages more accurately then 3rd party software programs. Not all software is created equally. I've seen software programs report wide ranges of voltages on certain computers. I've also seen the BIOS read obviously incorrect voltages as well. But from my experience, in some situations the BIOS seems to be more accurate than some software programs.
    
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post #20 of 31
It sounds like you've seen more individual computers than me. I've yet to see one that had noticeable discrepancies between software voltages, right now Everest and Speedfan are reading exactly the same for me (not that that is any kind of proof). When you say wide range of voltages, what do you mean? Are we talking, hundreths, tenths, more?
Edited by shinji2k - 5/24/08 at 10:03pm
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