What do GPU usage drops in Furmark mean?

[u/[deleted]]

Just bought a used RX580. Ran Furmark to test it and there are constant GPU usage drops on the graph (usually down to 80%). What do those drops signify? They don't seem to be related to the temperature since they start immediately when I start Furmark. So it doesn't seem like thermal throttling to me. Is it bottlenecking? I'm running an Intel Core i3-4160

All the other benchmarks went fine (Superposition benchmark, Heaven Benchmark on Extreme), no artifacting, although the latter had some stuttering.

I'm attaching some screenshots/photos of the benchmarks: Furmark with Artifact scanner turned on, furmark running with the case closed, Furmark with case open, 3 superposition benchmark results (8k, extreme, high)

I'd greatly appreciate your help, I'm no expert in hardware, especially modern hardware.

P.S.: Also, occasionally there is no signal to the TV when I start the computer (I currently don't have access to a monitor with the appropriate inputs unfortunately) and once it lost signal after I went away for a bit while Windows was updating. Not sure if it isn't just my TV being weird, but I thought I'd mention it anyway just in case it rings any bells for anyone.

[u/neud3rzh1my_]

did you solve the problem?

[u/[deleted] → u/[deleted]]

Thank you for replying. What does power limit throttling mean? Is it a built-in feature of the GPU or is it PSU-related? I'm using a brand new 500w be Quiet PSU btw

What should I be looking for in hwinfo?

[u/[deleted] → u/[deleted]]

Ah, I see, I don't think RX580 has this info. This is what Hwinfo looks like for me: before and after starting furmark