So I decided to overclock my laptop's gpu (nvidia gtx 970m) the other day and I only brought the memory up by 20mhz and the core clock up by 30mhz using evga precisionx. Everything was stable and there was a noticeable increase in performance. BUT, Hwmonitor said my gpu core clock was only 540 mhz when heaven 4.0 (the benchmark I was using) clearly said it was at around 1083 (can't remember the exact number). So which one is right? Also another guy on youtube with the exact same laptop (sager np8651/clevo p650se) could overclock about +500mhz core clock and I think +544mhz memory clock no problem and I started losing performance at +50mhz core clock and + 99mhz memory. I set all the values to default now just to be safe.