Originally Posted by darklink
LLC is not supposed to help CPU temps in any way. It simply helps alleviate issues with large vdroop on ASUS motherboards. Let's say for example in the BIOS you have set your vcore for the CPU to 1.45v. You boot into Windows and then open CPU-Z and your vcore is reading at 1.41v. When you start stress testing, lets say your vcore goes up to 1.44v in CPU-Z and then fluctuates between 1.44v and 1.43v. Essentially, enabling LLC can help to eliminate that wide vdroop to where it only fluctuates about .01v rather .03-.04v.
This means that the voltage when in Windows will remain closer to what is set in the BIOS and thus, temps might be a bit warmer as now the CPU is running at what it should be, rather than a lesser voltage than what was set int the BIOS.
If your voltage goes up when you start stress testing, then LLC is on. Yes, LLC reduces the gap, but not instantly. There will still be big spikes of voltage, they just happen very quickly. There is a big thread on here somewhere with an in depth explanation and testing of LLC. But to sum it up, its bad.
The reason LLC can help to reduce idle temps (yes i know thats not a specific aim of LLC, just a side effect) is that when LLC is on, say you are at 1.2v idle, with LLC off, you would have a higher idle voltage in order to account for vdroop from loading the cpu.