Hi guys
With all this virus stuff going on, I've pulled out and dusted off the old rig after years of it being in storage. It's an old setup and I'm trying to push it as far as I can for 1080p gaming. I'm leaning towards a PSU issue whilst monitoring afterburner overlays, the GPU core clock is jumping around between 900 - 1070mhz, with a core clock speed set at 1100mhz - (core clock drops at the most intensive parts of the games, so frame rate drops are even worse!). The overclock seems more stable when the voltage is left at stock, but it still jumps around a bit too. Running a benchmark in Unigine Valley seems to give a locked 1100mhz core clock (except between loads sections) but also drops to 950mhz when I start over-volting it? I tried this with the overclock/over-volt on the CPU and without but it doesn't seem to make any difference.
Sandybridge i5 2500k @4.4Ghz vCore 1.35v
Radeon R9 290 Tri-x (1100/1400)
Corsair Vengeance 16GB 1.5v
Be Quiet! 530watt PSU
When opening furmark 3d (a ridiculous stress test I know) it knocks the system off even without a GPU overclock, like I've just pulled the power cable out of the back and then starts rebooting after a couple of seconds, making me more suspicious of the PSU? I can get it to run but only by lowering the clock speeds on the GPU. No other test does this, but I never get a BSOD or error when I push the system on an overclock, it always seems to shut off like i've removed the power cable. Should I be looking at a 650w PSU?