Skull_Pirate

But my 2 4GB sticks are 1.5V and my 8GB stick is 1.35V, will that cause a problem?

During GPGPU benchmark for my 'overclocked' i7-4720HQ, at the AES-256 part I will always get an auto shutdown which does not happen at stock. Anyone knows why it happens / what's wrong with my XTU profile? Benchmark mentioned above: XTU profile: A couple questions: Should I increase cache ratio and current limit? What does changing turbo boost power time window do? All help is appreciated!

Is it OK to mix RAM of same speed, but different size and manufacturers? Will it degrade my overall RAM performance? My current 8GB stick is in slot #2.