5820K cold boot issue and overclock fine tuning

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Joined
23 Jul 2014
Posts
39
Hi 8 Pack,

I'm looking for some help to home in on the cause of a frustrating niggle with my setup and advice on fine tuning my overclock.

My setup is listed below:

  • Asus X99 Deluxe/USB3.1 Motherboard
  • Intel i7-5820K Processor
  • Corsair Vengeance 16GB (4x4GB) DDR4 PC4-24000C15 3000MHz
  • EK Water Blocks Predator 360 AIO CPU Cooler

I got lucky with the CPU and got a J batch chip which I've been able to get stable at 4.625Ghz. I did this by using XMP profile for the memory to run at 3000Mhz, used a BLCK of 125mhz with the CPU core volts at 1.186v. I also set the CPU Cache multi to be 32 to get 4Ghz cache with 1.175v. I have set CPU input voltage to be 1.9v and set the System Agent to 1.05v. Temps are looking very good with these setting as I'm only hitting ~62C under heavy CPU load.

I am however constantly getting issues when booting from cold with the system freezing before Windows 10 loads. Three or four reboots and it loads Windows fine and runs everything I'm doing fine. So I suspect its a memory training issue based on the forum reading I've done but I am unsure how to tackle it. I've tried nudging up the System Agent volts a little going up to ~1.056v but its made no difference. I've also tried changing the bios setting associated with memory tests for fast boot etc but I'm having no joy in fixing this.

Can you give me any advice on how to tackle this issue?

I'm also trying to see how I can dial in a higher overclock but am now struggling as I can't find any info on the more refined setting to optimise an overclock on the X99 platform. Can you give me any advice on other setting I can tune. I can get a 4.75Ghz overclock to load into Windows and run games etc reasonably ok with around 1.2v on CPU core. But I do get crashes now and then so its not 100% stable with those setting but I'm sure with the right tweaking it could be stable with that overclock. Any advice on how to proceed with refining my setting to get this stable would be great.

If there is any more info I can give let me know but I've tried to cover everything I can think of.

Cheers!

SupernovaUK
 
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