Yeah I was struggling a bit on overclocking my Vega 64. If I try HBM above 1025MHz, it seems to just stick to 800MHz, even with voltage increases. My best bet was to leave it on Auto Voltage with 1025.If I try undervolt the core or increase frequency it typically doesnt work. I found leaving it at auto was my best option. In the end, I increased my fans ability a smidgen and upped the Power Limt to +50% along with HBM at 1025MHz. My results in 3Dmark Firestrike 6700K + 980Ti (overclocked hard) - 17572 6700K + Vega 64 balanced - 17920 6700K + HBM 1025 + Power Limit 150% - 19084 Anyone got any tips for UV/OC on Vega 64.