Just a question about my psu and gpu problem

[Real name here]

My gpu fans spin too 100% and the screen shuts off but the vga light does not come on on my motherboard I was thinking the gpu is shutting down due to a issue like the wrong voltage from the psu and it only happens when I pull more than 400 watts that is also when the psu fan kicks on. If I where to test the gpu in another pc and it works what would the issue be and if it did not then what?

 

[Bill_Bright]

It is highly unlikely the PSU is outputting the "wrong" voltage. Typically, if wrong, the computer would not work at all. So does this problem appear as soon as you boot the computer? Or only after it has been running for awhile?

The best way for most users to test PSU is to swap in a known good one and see if the problem goes away. There are hardware information/monitoring programs that can be very informative, though they are not conclusive because they rely on sensors on the motherboard and those sensors are very low-tech, and often wrong. But typically, if the voltages appear correct, they likely are.

One of the best software programs for this is HWiNFO64. The amount of information it provides can be overwhelming so when using for the first time, I recommend you select “Sensors only” when prompted. Then scroll down to your motherboard’s section to see the voltages. The ones to verify are +3.3V, +12V and +5V.

The ATX 2.x Form Factor standard for PSUs requires PSUs maintain output voltage within ±5% of the required specifications. This means for ATX 2.x PSUs, the allowed tolerances are:

​

12VDC ±5% = 11.4 to 12.6VDC​

5VDC ±5% = 4.75 to 5.25VDC​

3.3VDC ±5% = 3.14 to 3.47VDC​

​

For newer ATX 3.x PSUs, the tolerance for +12VDC was relaxed a little and is now -7% up to +5% as follows:

12VDC -7%, +5% = 11.16 to 12.6VAC​

Note your problem is also a symptom of heat. So make sure the interior of your case is clean of heat trapping dust and case fans are spinning too. You can also check your temps in that same section of HWiNFO64.

 

[Real name here]

It is highly unlikely the PSU is outputting the "wrong" voltage. Typically, if wrong, the computer would not work at all. So does this problem appear as soon as you boot the computer? Or only after it has been running for awhile?

The best way for most users to test PSU is to swap in a known good one and see if the problem goes away. There are hardware information/monitoring programs that can be very informative, though they are not conclusive because they rely on sensors on the motherboard and those sensors are very low-tech, and often wrong. But typically, if the voltages appear correct, they likely are.

One of the best software programs for this is HWiNFO64. The amount of information it provides can be overwhelming so when using for the first time, I recommend you select “Sensors only” when prompted. Then scroll down to your motherboard’s section to see the voltages. The ones to verify are +3.3V, +12V and +5V.

The ATX 2.x Form Factor standard for PSUs requires PSUs maintain output voltage within ±5% of the required specifications. This means for ATX 2.x PSUs, the allowed tolerances are:

​

12VDC ±5% = 11.4 to 12.6VDC​

5VDC ±5% = 4.75 to 5.25VDC​

3.3VDC ±5% = 3.14 to 3.47VDC​

​

For newer ATX 3.x PSUs, the tolerance for +12VDC was relaxed a little and is now -7% up to +5% as follows:

12VDC -7%, +5% = 11.16 to 12.6VAC​

Note your problem is also a symptom of heat. So make sure the interior of your case is clean of heat trapping dust and case fans are spinning too. You can also check your temps in that same section of HWiNFO64.

What should my temps look like on my gigabyte 3080 ti eagle ox card if it is a sign of a heat issue because I put a Rx 580 2048sp in and it works fine. I think I will rma the psu as I don’t have the tools or excess parts to test for a bad psu sadly.

 

[Ruru]

What should my temps look like on my gigabyte 3080 ti eagle ox card if it is a sign of a heat issue because I put a Rx 580 2048sp in and it works fine. I think I will rma the psu as I don’t have the tools or excess parts to test for a bad psu sadly.

Here's review I found of that card, use that as reference.

GIGABYTE GeForce RTX 3080 Ti EAGLE 12G Video Card Review

How does a retail GIGABYTE GeForce RTX 3080 Ti EAGLE 12G Video Card hold up in testing, overclocking, and performs in games? Let's find out.

www.thefpsreview.com

 

[Bill_Bright]

I think I will rma the psu as I don’t have the tools or excess parts to test for a bad psu sadly.

Not sure it will be that easy. You typically need a good reason in order for them to accept your RMA request. And many companies will charge you a restocking fee if they find nothing wrong with the returned item.

Rx 580 2048sp in and it works fine

Then that would suggest the PSU is fine and the problem is with the first card.

While not ideal, I keep a PSU Tester in my tool bag in my truck for house calls. The advantage of this type model is that it has a LCD readout of the voltages. With an actual voltage readout, you have a better chance of detecting a "failing" PSU, or one barely within the allowed tolerances (at least with the tester’s internal load).

However, these testers do not test for ripple and they only provide a single, small "dummy load", not a variety of "realistic" loads. So while better than nothing when you don't have a spare PSU to swap in, it is important to remember these testers are not a conclusive test either.