Hi everyone. I bought a used MSI RX 580 Armor 8G OC recently, but I'm having problems with it crashing.
My current PSU is a fairly new 500W Thermaltake TT-500NL2NK-A, I'm using a dual Molex to 8-pin because the PSU only has a 6-pin (the GPU is rated at 185W). The system runs fine without the card, but when playing games it'll run well but eventually the monitor will cut to no signal and restart after a moment.
I've tried under-clocking power and clock frequency to 70%, but it still crashes. The temperature is never over 65˚C, so I'm thinking it must be the card having a fit over its power supply, because it only seems to become unstable under heavier loads when it needs more power. It crashed when I ran a graphics stress test. I might try a dual SATA to 8 pin adapter as well. The card was quite dusty (probably used for mining), so I've cleaned it out and I'm going to reapply thermal paste soon because it needs it (buying Noctua NT-H1).
What's the verdict? Is it the PSU or something more sinister? Should I try under-clocking other settings (memory frequency, or voltage - voltage is greyed out on afterburner), I'm new to OC. As it stands, I don't mind under-clocking until I decide to invest into a new PSU. I bought a card more powerful than I need at the moment, to future-proof.
Thank you to anyone who can help!
CPU: i5 6600