Sorry to be swarming this thread; I'll stop talking after this. I thought this was kinda important. So after playing in UEFI and getting my CPU to clock down to 1.6GHz in CPU-Z when idle (see above), I did some more tests and immediately saw that my CPU speed was fluctuating wildly in Real Temp, like constantly changing from around 2.3GHz to around 4.4 GHz. I googled it and many people said to just trust CPU-Z on this, but I found a few good comments about how CPU-Z ignores this fluctuation and Real Temp picks up on it accurately because it monitors the current etc. (I did not save the link, stupidly). One person tested this with games and saw again that his frequencies were fluctuating and harming performance. The conclusion was that once you manually set your multiplier (and maybe Vcore, not sure if it's also related) the C States settings (which control this downclocking and powersaving feature) interfere with your overclock and your processor starts switching between the manual speed and the C State idle speed. I don't know if this harms the CPU in any way, but I decided to just disable all States again and let it run at 4.4GHz. Quoting one of the comments I found: "To hell with power-saving."