Z690-A wifi D4 weird voltages

[Deleted member 24505]

Just upgraded to this-
i7 12700k
Asus Rog Strix Z690-A WiFi D4

Problem is weird voltages on the 12v and 5v. They stay bang on 12 and 5v, both of them. Looked in the bios and they are the same in there. They were ok on my previous Asus tuf B450M pro s, see pic. What the deuce is going on.

and current
HWiNFO64

Aida64

 

[Bill_Bright]

Just to assuage concern, there is nothing wrong with those voltages. The ATX standards allows for ±5%. As seen here, the acceptable tolerance maximums are:

12VDC ±5% = 11.4 to 12.6VDC
5VDC ±5% = 4.75 to 5.25VDC
3.3VDC ±5% = 3.14 to 3.47VDC
​

So yours are all well within acceptable tolerances.

Now, as far as to why you see slightly different voltages, there are probably a couple possible reasons for that. For one, these monitoring programs do not "measure" voltages in the way a voltmeter does. Instead, they just read a hexadecimal value presented by a sensor. Then the monitoring program converts that number to a degree value. It is possible the programs use slightly different algorithms/formulas to convert from hex to degrees.

It is also possible they read the values at different sensors.

And then clearly, they read the values at different points in time. Different points in time are not only different points in time, but the loads on the system will be slightly different too.

These are the same reasons your temps are all slightly different too.

 

[Deleted member 202104]

@Bill_Bright I think @Tigger's concern is that the new board is reading a constant 12v and 5v without any fluctuation at all.

It's nothing I've seen before, but if I had to guess it's probably because the Z690 platform is so new and HWinfo64 hasn't caught up yet. Either that, or it's the best VRM setup ever.

 

[Bill_Bright]

Maybe right. Sorry if I caused confusion. But I note the board has been around for 5 months so HwInfo should be current. Perhaps the question should be put over on their site?

 

[Deleted member 202104]

Maybe right. Sorry if I caused confusion. But I note the board has been around for 5 months so HwInfo should be current. Perhaps the question should be put over on their site?

Oh, no confusion at all. Your explanation about voltage variance is good info to have in the thread for people to have.

 

[Deleted member 24505]

As i said it's strange that it seems to do it in the bios too. i will post a pic later. So can't be nothing to do with windows. Pc works fine, even did a run of R23 fine.

 

[Bill_Bright]

It should also be noted that those sensors are very low-tech, inexpensive devices. I have seen them report 5V for the 12V rail, and 1V on 3.3V rail. Clearly the computer would not be running if those voltage readings were correct.

If you are handy with a multimeter, you could check the voltages right out of the supply. Just understand, testing with a multimeter is not conclusive. You could also get a decent PSU Tester. These are not 100% conclusive either because they do not measure ripple suppression, nor do they put a variety of realistic loads on the supply. But they do reveal a bad supply, if a voltage is missing, for example. And this type tester, ones with actual voltage readouts instead of a simple LED, can tell you if the PSU is outputting voltages within that ±5% tolerances - at least with the small 10Ω internal load of the tester. I always keep one of those testers in the tool bag in my truck for when I make house calls. They are also handy for tricking a PSU to power up for testing fans and drive motors.

 

[Deleted member 202104]

As i said it's strange that it seems to do it in the bios too. i will post a pic later. So can't be nothing to do with windows. Pc works fine, even did a run of R23 fine.

Oh, sorry, I missed that about being in the BIOS too. I have some change in mine, but only by about .02v.

AMD B550 platform with about an hour and 15 min of uptime:

Are you running the latest BIOS on that board? I've read that the first update cleared up some issues.

 

[Deleted member 24505]

Oh, sorry, I missed that about being in the BIOS too. I have some change in mine, but only by about .02v.

AMD B550 platform with about an hour and 15 min of uptime:

View attachment 227590

Are you running the latest BIOS on that board? I've read that the first update cleared up some issues.

I did update it to 707 iirc. i will go in bios and check again.