Question GPU White Flashing Lights

[Alch]

I have a Gigabyte 3060ti Gaming OC, a Ryzen 5 5600x and a EVGA 600B power supply, and my GPU is currently flashing, but I've only really seen it flash when I am playing Yakuza 0, it is not a very demanding game, and as far as I can see, it only uses 140W of power, but whenever I test it out in FurMark, even though the GPU is pulling 200W, it doesn't flash one bit, anyone have an idea of the issue?

 

[Phaaze88]

GPU is currently flashing

This flashing?

View: https://www.youtube.com/watch?v=1milKOPa9zA

See 25:51 - 26:43.

it only uses 140W of power, but whenever I test it out in FurMark, even though the GPU is pulling 200W, it doesn't flash one bit

The gpu will pull more than that; software doesn't catch the spikes, and 30 series in particular was pretty bad with it compared to other recent generations.
Furmark load doesn't equal game loads. Games are a better stress test than it is. Furmark is best used to analyze how good the gpu cooler is.

 

[Alch]

This flashing?

View: https://www.youtube.com/watch?v=1milKOPa9zA

Yes, it is that type of flashes, just in white.

And, I found out the issue I believe...
I had some cablemod extension cables for my GPU, I removed them, and the LEDs are no longer flashing, really damn weird.

 

[Phaaze88]

I had some cablemod extension cables for my GPU, I removed them, and the LEDs are no longer flashing, really damn weird.

The extra length adds resistance, leading to greater voltage droop.
Since psus do age; their output decreases over time, the use of cable extensions means more frequent psu changes.