voltage Voltage slightly Low or A BUG ?

[dani.petro]

Hi,

For few days I am noticing that my voltage in Bios and HWinfo is going below 5V and 12V @4.996 and 11.991.

Now I hooked up a multimeter to a spare molex female plug and read the voltages and they were as stable as they can be @5.04 and 12.07

 

Also yesterday my brother bumped himself on my PC case while I was playing Forza and PC restarted but didn't post. I thought that ram may have come loose so I reattached it and all is working fine. Also bios was not detecting correct amount of ram so I reset it. 

 

So what kind of issue is this?

psu is antec eag 750 gold  

motherboard is x570 pg4 by Asrock

Cpu is ryzen 3500

Ram is 8*2 TridentZ rgb 3600

Aio is castle 240ex argb

 

 

 

 

 

 

[emosun]

There isnt an issue

 

4.996 is only four thousanths off of 5 volts. If your shoes were 4 thousanths smaller, you wouldnt even be able to measure it with an actual ruler 

[dani.petro]

3 minutes ago, emosun said:

There isnt an issue

 

4.996 is only four thousanths off of 5 volts. If your shoes were 4 thousanths smaller, you wouldnt even be able to measure it with an actual ruler 

You didn't even understand the issue here.

[dani.petro]

How come Bios and Multimeter measurement have such difference?

They should be near to each other

[YoungBlade]

1 minute ago, dani.petro said:

How come Bios and Multimeter measurement have such difference?

They should be near to each other

They are near to each other. They're within a single percentage point of each other. How much precision are you expecting?

[dani.petro]

2 minutes ago, YoungBlade said:

They are near to each other. They're within a single percentage point of each other. How much precision are you expecting?

Then how come 1 month back the voltages were more near to what the multimeter was reading?

 

[YoungBlade]

1 minute ago, dani.petro said:

Then how come 1 month back the voltages were more near to what the multimeter was reading?

 

First, the Phantom Gaming 4 is a low-end X570 board. It is a piece of consumer electronics. I wouldn't put too much stock in its accuracy to that degree of precision. Again, we're within 1% - that's good enough for anything but extreme overclocking applications.

 

Second, how high quality is your multimeter? Is it rated to be accurate to less than 1%? Most cheaper ones are not designed for that degree of accuracy, because again, normal usage doesn't require it.

[emosun]

Id be surprised if you had any multileter equipment or computer equipment that wad accurate down to 0.001%. 

[dani.petro]

27 minutes ago, YoungBlade said:

First, the Phantom Gaming 4 is a low-end X570 board. It is a piece of consumer electronics. I wouldn't put too much stock in its accuracy to that degree of precision. Again, we're within 1% - that's good enough for anything but extreme overclocking applications.

 

Second, how high quality is your multimeter? Is it rated to be accurate to less than 1%? Most cheaper ones are not designed for that degree of accuracy, because again, normal usage doesn't require it.

Its a Fluke 179 True RMS

[dani.petro]

Anyways problem solved. 

Reseated all cables, pushed the gpu in a bit even though it didn't budge and voltages are back to normal in line with the Fluke. The bump to the case might have made the connection loose somewhere.

[YoungBlade]

10 minutes ago, dani.petro said:

Its a Fluke 179 True RMS

In that case, it's rated to basically within 0.1% for DC voltage. So you do have a professional quality multimeter that can measure a difference that small. However, the motherboard is not necessarily going to be that accurate. I'm not sure why you are so concerned about such a minor discrepancy, but I'm glad the problem is resolved.