Question HWInfo or GPU-Z for PCIe 12v Slot Voltage

[The Guy From The Thing]

so between HWInfo and GPU-Z, their information is usually pretty identical for the 8-pin and 6-pin voltages, as well as the general GPU voltage; however, I've found that both applications show slightly different voltages for the PCIe 12v Slot Rail

my 8-pin voltage is usually 12v, and remains that way under majority of load; while my 6-pin is typically 12.1v and can sag occasionally to 12.0v. both HWInfo and GPU-Z display that identically

in comparison, the PCIe 12v Voltage under the GPU section of HWInfo is typically 12.05v and will very commonly sag to the 11.9v ranges under load, with some games (Destiny 2 in particular) sagging it further down to 11.8v. lowest voltage I've seen from the PCIe on HWInfo is 11.869v, but when it drops that far, it's is usually down to 11.870-11.980


this doesn't translate to GPU-Z though, and even though the graphs from both of these apps are the same (they show identical trends, spikes, and sags), GPU-Z shows a PCIe voltage of 12.1v, which frequently drops to 12.0v, and never sags below 11.9v

GPU-Z doesn't seem to have precise numbers like HWInfo, so I don't know how "close" 11.9v is to 11.8v in GPU-Z; judging by how the graph hardly moves when it drops from 12.1 to 12.0, I'm assuming that it's basically reading 12.09v but I can't tell


regardless...which one would be more "accurate" between these 2? I'm kind of worried about the PCIe sagging down to 11.8v every now and then while playing, and I want to know which app I should be trusting more for these voltages. 11.8v is within ATX spec and everything, and I know these voltages typically sag under load, but I'd still like to know; the sag is sometimes very quick, matching with the spike of GPU voltage, and sometimes it might last for about 5ish seconds

(here's an example of the "longer" sags; it only went to 11.9v in this image, this wasn't 11.8 but it's just an example)

https://imgur.com/a/5ydA08e

View: https://imgur.com/a/5ydA08e

 

[Cyberat_88]

Are you trying to "Fix" a perfectly working PC ?
As far as measurements go, your multi-meter is your best friend.
Any and all software can be lagging or be erroneous in reports.
Speccy for example still fails to report SLI/Crossfire as Enabled.

 

[The Guy From The Thing]

Are you trying to "Fix" a perfectly working PC ?
As far as measurements go, your multi-meter is your best friend.
Any and all software can be lagging or be erroneous in reports.
Speccy for example still fails to report SLI/Crossfire as Enabled.

never said I was trying to fix anything, I said I was worried because I'm unsure if that kind of sagging is a bad sign for the GPU or PSU.

ATX spec range aside, I've just heard people saying that sagging below 11.89v is bad, and then I've heard other people say that you shouldn't sag by more than 0.2v (from 12.05v, the sag down to 11.869v is around 0.181v)

then with the software, I've heard people say GPU-Z matches their multimeter perfectly, and I've heard others say HWInfo is the best for monitoring voltage. I've usually always used HWInfo but when I saw GPU-Z had a different PCIe reading, I started getting more confused

 

[Cyberat_88]

Your GPU-Z downgrades PCIE speed when idle, unless you're running a graphical program it will give all sorts of misinformation. Mine shows 1.1 but when I run the benchmark it jumps to where it should be 2.0.
Don't be a HypoComputerCondriac. Stop listening to rumors and hearsay, run stress tests, run stability tests, all good ? Move on, don't double guess yourself or the PC. I'm a techie. by profession and have been for many years, I've fallen in that trap more than I care to speak about it. If it's not broke, don't try to fix it, just enjoy.

 

[The Guy From The Thing]

Your GPU-Z downgrades PCIE speed when idle, unless you're running a graphical program it will give all sorts of misinformation. Mine shows 1.1 but when I run the benchmark it jumps to where it should be 2.0.

well I wasn't talking about PCIe speed, I was worried about PCIe voltage. unless that affects the voltage reading in which case, my bad I didn't know that. even then, under load, it still can often display 12.1v and doesn't show me going below 11.9v

the only reason I worry is because of consecutive PSU failures I've had in the past (not the same brand as my current), and it's seemingly impossible for me to find a clear clarification on how much your voltage should sag.

unless I'm running the GPU at full like, 230w under benchmark, PCIe voltage is the only one that does sag under load, and I just struggle to find information about it TO ease my mind. seeing the line sag to 11.87 or 11.89 on HWInfo just makes me uncomfortable due to this lack of knowledge


though I understand where you're coming from, for sure, given your profession. it's unfortunate to be stuck in this trap