is 11.2v bad for 12v rail during 100% load ont psu ?

[Pakwarrior]

hello so i recently made a build 

 

i7 3770

rx580

16gb ram

2x 500gb HDDs

1xhdd 

 

and psu is  CWT gpt-500 80+ white 

 

while playing games like apex or war thunder when gpu is going 100% 173 watts 

with CPU like 50% usage and 43 watts..

 

I GET 11.4 volts on the 12volt rail 

 

then out of curiosity I put 100% load on the psu using occt stability testing software 

during test, psu holds avg 11.3volts while max goes to 11.43 for 1% and 0.1% goes to 11.23v (for like 1 to 3 secs then comes back to 11.43 then after 5 to 10 secs goes to 11.34 then again for 1,2 sec 11.23 then comes back to 11.4v..

 

 

so is it dangerous for PC components and should I change the psu 

the thing is i am a student and don't really have money for the psu yet but i can manage to get some bucks in some time while also selling current psu online 

 

 

[Somerandomtechyboi]

nah youll be fine

 

afaik atx calls for a 5% max deviation of voltage so 12v can be 11.4-12.6v, wouldnt worry over it

 

btw you can cut the gpu power draw to ~100w if you undervolt to .86v and set core clocks to ~1100, otherwise if power bills dont matter just oc the thing till the cooler cant keep it under 90c

[porina]

Where is the measurement defined and happening? It is normal for the voltage to drop over practical cables as the current goes up. The voltage measured at the PSU might still be higher, but it droops by the time it is at the GPU.

 

The GPU doesn't directly use 12V anyway. It converts the power to lower voltages. If the input voltage drops, it increases the current to give the required power. As long as the current is still in limits and the PSU doesn't fall over, it should be ok.

[Pakwarrior]

4 minutes ago, porina said:

Where is the measurement defined and happening? It is normal for the voltage to drop over practical cables as the current goes up. The voltage measured at the PSU might still be higher, but it droops by the time it is at the GPU.

 

The GPU doesn't directly use 12V anyway. It converts the power to lower voltages. If the input voltage drops, it increases the current to give the required power. As long as the current is still in limits and the PSU doesn't fall over, it should be ok.

psu is of a reputable brand cwt as I discussed with friend so if that the case then ok btw there is a psu available fsp 600 watt 80+ silver

• Somerandomtechyboi 

[manikyath]

dangerous? no.

 

should you replace that power supply? i would. 80+ white is is pretty terrible efficiency these days, which has further implications about how well made (or lack thereof) the rest of the power supply is.

 

it's better than not having a power supply, obviously.. but it's safe to assume that if you ever start to notice stability issues with your system, it's probably the power supply.

[Pakwarrior]

1 minute ago, manikyath said:

dangerous? no.

 

should you replace that power supply? i would. 80+ white is is pretty terrible efficiency these days, which has further implications about how well made (or lack thereof) the rest of the power supply is.

 

it's better than not having a power supply, obviously.. but it's safe to assume that if you ever start to notice stability issues with your system, it's probably the power supply.

ok ill keep that in mind when im gonna upgrade in future IA il replace this psu also 

[Pakwarrior]

8 minutes ago, porina said:

Where is the measurement defined and happening? It is normal for the voltage to drop over practical cables as the current goes up. The voltage measured at the PSU might still be higher, but it droops by the time it is at the GPU.

 

just checking from software occt no special equipment 

[podkall]

19 minutes ago, Somerandomtechyboi said:

nah youll be fine

 

afaik atx calls for a 5% max deviation of voltage so 12v can be 11.4-12.6v, wouldnt worry over it

 

btw you can cut the gpu power draw to ~100w if you undervolt to .86v and set core clocks to ~1100, otherwise if power bills dont matter just oc the thing till the cooler cant keep it under 90c

idk if you want to OC a GPU when the PSU is starting to drop it's 12v rail voltage, I'd much rather just see if an undervolt without the loss of performance or stability was possible instead

[Somerandomtechyboi]

34 minutes ago, podkall said:

idk if you want to OC a GPU when the PSU is starting to drop it's 12v rail voltage, I'd much rather just see if an undervolt without the loss of performance or stability was possible instead

there doesnt really seem to be any solid proof with what part of a psu can cause instability so just test it out for yourself and see what happens

 

i mean it is possible and i think there have been a few threads here and there where a psu swap fixed instability but the details on voltages are vague if not non existent so no idea if its some invisible spikes or whatnot in the background or the voltage reading you can see in your mobo bios

[podkall]

1 minute ago, Somerandomtechyboi said:

there doesnt really seem to be any solid proof with what part of a psu can cause instability so just test it out for yourself and see what happens

 

i mean it is possible and i think there have been a few threads here and there where a psu swap fixed instability but the details on voltages are vague if not non existent so no idea if its some invisible spikes or whatnot in the background or the voltage reading you can see in your mobo bios

I'm not OP, but are you saying that voltage itself not being 12V on the 12V rail for example isn't necessarily a bad thing?

[Somerandomtechyboi]

Just now, podkall said:

I'm not OP, but are you saying that voltage itself not being 12V on the 12V rail for example isn't necessarily a bad thing?

nope

 

it gets converted down anyways and ive run much worse with basically no consequence other than some protection on the board or psu kicking in  so it auto shuts down (12v -> 14.2v and 5v -> 6v with 3.3v -> 2.7v) but thats on a trash grey box oem psu with a tiny rear fan and non existent 12v rail

[Pakwarrior]

On 3/15/2024 at 2:37 AM, podkall said:

idk if you want to OC a GPU when the PSU is starting to drop it's 12v rail voltage, I'd much rather just see if an undervolt without the loss of performance or stability was possible instead

i am not fdoing any kind of oc maybe it might due ti i7 3770 and z77 overclockable mobo OCing the cou and charging more Current maybe

[freeagent]

If you are having some crashes, then yes it is bad, and the PSU is done, especially if the 3.3 and 5v is showing a low voltage too. The crashes will tell you.

[podkall]

24 minutes ago, Pakwarrior said:

i am not fdoing any kind of oc maybe it might due ti i7 3770 and z77 overclockable mobo OCing the cou and charging more Current maybe

cool, if you may get issues in the future, and you know its PSU you could try undervolting, you dont have to do it now