Here's the scenario. I got an old i5 3570 paired with Sapphire RX580 Nitro+ (not LE/SE) version which was a mining card (still got a year warranty and I got if quite cheap).
The card is running 1411 core clock and 2000 mem clock on stock. Using fsp II saga 500w (bought in 2013) to power everything up.
I tried and get a stable overclock at 1436 core and 2150 mem (run kombustor for 30 minutes without fail). When benchmarking using uniengine valley for example I can see a bit fps increase.
Now my question is, when I do benchmark for Warhammer 2 (skaven benchmark) my overclocked setting always show lower fos that stock setting.
Not much, for example I got 34.7 on stock but 34.6 on overclocked. How can this happen? Any trick I should know of where did I go wrong? I'm not expecting much though I hope to maybe gain about 5 fps is enough for me.
I did not try benchmarking other games with the OC setting though since I dont need them. Only Warhammer 2 and maybe until I can get new gen CPU which I believe will get me better performance before TW3K released.
Any ideas why it happened? Anyone have different exoerience when overclocking RX 580?