I've been recently dabbling in overclocking my R9 390 and have starting noticing some weird correlations.
Using Furmark and Valley benchmark for testing I got it clocked to 1125/1600 with no artifacts, overheating, and at stock voltage. I had it at 1100/1550 for a little while and it ran well with consistent performance. After I reached 1125/1600 it started acting odd. While playing GTA V I've noticed I get a few things going on. I get a frame drop from 57 (capped) to usually below 50 and sometimes as low as 40. The drop is sudden and pretty noticeable, but usually lasts a second or two then hops back up to where it was. As soon as the drop happens I also see my GPU usage graph drop from 100% to much lower, usually below 50. My GPU voltage also seems to fluctuate a decent amount. I believe it's supposed to be right around 1.25 when gaming, but it usually bounces around from 1.15 to 1.25. Sometimes this correlates with performance drop, sometimes not. Temps are all well within reasonable range.
Changes to voltage up or down don't help and even back at stock clocks it continues. I haven't thoroughly tried it with other games yet but GTA hasn't been updated since well before I started noticing this. When I overclock too far with my benchmarks I'll get artifacts or a crash, but the clocks I've been using have all been stable in them. GTA however doesn't seem to cooperate despite it not stressing the GPU nearly as much or getting as hot.
Does this sound indicative of any problem? I'm a bit worried I'm pushing my CX600M too far, but unsure. I have noticed that when gaming my lights in my room or connected bathroom will flicker faintly at a certain frequency, which I'm hoping is just poor wiring and not my PSU about to explode.
Using Furmark and Valley benchmark for testing I got it clocked to 1125/1600 with no artifacts, overheating, and at stock voltage. I had it at 1100/1550 for a little while and it ran well with consistent performance. After I reached 1125/1600 it started acting odd. While playing GTA V I've noticed I get a few things going on. I get a frame drop from 57 (capped) to usually below 50 and sometimes as low as 40. The drop is sudden and pretty noticeable, but usually lasts a second or two then hops back up to where it was. As soon as the drop happens I also see my GPU usage graph drop from 100% to much lower, usually below 50. My GPU voltage also seems to fluctuate a decent amount. I believe it's supposed to be right around 1.25 when gaming, but it usually bounces around from 1.15 to 1.25. Sometimes this correlates with performance drop, sometimes not. Temps are all well within reasonable range.
Changes to voltage up or down don't help and even back at stock clocks it continues. I haven't thoroughly tried it with other games yet but GTA hasn't been updated since well before I started noticing this. When I overclock too far with my benchmarks I'll get artifacts or a crash, but the clocks I've been using have all been stable in them. GTA however doesn't seem to cooperate despite it not stressing the GPU nearly as much or getting as hot.
Does this sound indicative of any problem? I'm a bit worried I'm pushing my CX600M too far, but unsure. I have noticed that when gaming my lights in my room or connected bathroom will flicker faintly at a certain frequency, which I'm hoping is just poor wiring and not my PSU about to explode.
