Z390 Aorus Elite + 9600k, can barely make [email protected]

[IamBecomeGoat]

Hey All,

System Specs:

• Gigabyte Auros Elite Z390 (bios F10g),
• Intel 9600k,
• Polimatech Megahalem,
• Team Group 8Pack Edition 16GB (2x8GB) DDR4 PC4-28800C16 3600MHz Dual Channel.

I have been struggling to get anything remotely stable past 4.6 GHz when I get the impressions that 4.8-4.9 GHz is realistic and few are even able to achieve 5Ghz. Is this about right?

Firstly, I have run prime95 (blend) for an hour at stock settings and my temps peaked at 74C, but typically ran in the high 60's. So I think my cooler is just about up to it, despite being a bit older?

Basic Overclock Configuration

When attempting to overclock I start from bios defaults and making the following changes:

• Enhanced multicore performance: Disabled,
• CPU Clock Ratio: 48,
• CPU Clock Ratio: 43,
• XMP: disabled,
• CPU Vcore LLC: Turbo,
• CPU Vcore: 1.4v.

These settings can sometimes get the system to boot, but usually locks or blue screens.

OC guide and experiments

I have tried various settings in addition to following this guide published by gigabyte (and variations of this guide):

• Ring Ratio: setting this to 43 (the default) seems to work best. Increasing it to anything near what what the guide recommends (47) and the system will not boot.
• The guide suggests disabling: Intel® Speed Shift Technology, CPU Enhanced Halt (C1E), C3 State Support, C6/C7 State Support, C8 State Support and C10 State Support. Alternatively one can disable Enhanced multicore performance. I have tried both to no avail.
• VT-d: makes no difference.
• CPU Vcore LLC: I have tried auto, turbo and extreme. Turbo seems as effective as extreme.
  
• CPU VCCIO: I have gone has high as 1.15v (this helps, I can start prime 95 but it locks up).
• CPU system voltage: I have gone has high as 1.15v (this helps, I can start prime 95 but it locks up).
• DRAM voltage: 1.3v (recommends 1.2-1.4v, everything else is at defaults, i.e., DDR4-2400).

Questions

• Despite the temps being reliably no more than 74C with a lower OC, is it possible that the cooler is not up to the job?
• I have seen posts of people who set VCCIO and system voltage to 1.3v, is this safe?
• Is there some esoteric setting I have missed?

Thank you,

Goat

 

[MartinPrince]

Hi, Welcome to the forum and just a few points.

• Use Realbench instead of Prime95
• Bios F10g is still a beta bios (also has slower microcodes), you'll probably get more stability for overclocking by using F9
• Set VCCIO and CPU System Agent to 1.25v
• Set LLC to Extreme
• Set CPU Voltage to 1.35v (1.4v is a bit on the high side so start at 1.35v)
• Install HWInfo64 and use the first listed 'VR VOUT' reading to monitor CPU voltage - this is the most accurate

You can set the Additional Voltage page to this. (you might not have all the settings listed below but just change the ones you do have and leave the rest at Auto)

Start your all core clock at 4.6Ghz and run Realbench for 15min, then increase by 100Mhz and repeat etc. Keep raising by 100Mhz until you get a Realbench failure or crash then increase then voltage by 0.01v i.e. 1.36v and try again. The most you really want to be going to is ~1.37v - use the VR VOUT to see what this really is, not CPU-Z or what it says in the bios.
Once you get instability then you can drop the clock by 100Mhz and test more thoroughly for stability before calling it a day.