Overclocking the i7-5820k

[TheDarkPleco]

I built a computer a few months ago with an i7-5820k processor. I have overclocked it to 4.5 GHz with 1.3v, but it wasn't always stable under full load. I lowered it to 4.2 GHz and it seems to be much better, but it's max running temperature is 60 degrees celcius with my liquid cooler. My question is, can I add more voltage safely, as my cooler can easily handle whatever may be thrown at it. Also, I had bought DDR4 3000 RAM, but the processor despises it being above 2133, even though I often keep it at 2666. What would be the most stable frequency for an overclock? Thank you for any advice!

 

[firefoxx04]

1.3v should get you 4.5ghz 9 times out of 10.

Before you throw more voltage at it, have you checked your RAM stability with memtest86?

What is your cache clock / ring ratio at? Keep it at x35 or x40, no higher. This is the speed of the memory controller. It can cause instability if set to auto or set higher than 40.

If you truly need more than 1.3v, you can safely go up to 1.4v but that is pushing it. As long as the load temp is 80C or less you can be happy with the temps.

I would be willing to bet you can get 1.3 to work at 4.5ghz with some better tweaking.

 

[firefoxx04]

Ill also go on record by saying that I would never personally go past 1.35v (ive never gone past 1.32. If you can get 4.5 at those levels, I say its not worth it and just settle for the lower clock. Its still VERY fast.

 

[TheDarkPleco]

I will have to check my cache clock to see what it's at. I will keep it at a lower clock then, I haven't noticed any issues anyway.

 

[firefoxx04]

There is no real world performance advantage to a cache/ring clock higher than 4ghz (or 3.5ghz to be honest)

Some people try to keep it the same as the core clock (1:1 ratio) because thats how it is stock.. but thats not necessary and requires very careful tuning and more voltage. They do all of that for no performance improvement.