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MAXIMUS Z790 DARK HERO - i9-14900K - G.SKILL Trident Z5 XMP 3.0 DDR5 8000MTs - can't use XMP

optiman
Level 11

My setup listed in the subject.  I updated the bios to 506 and I still only get 5700 MHz with my cpu when native is 6.0 GHz for this processor.

Everything is set to default / Auto.

My memory (F5-8000J4048F24GX2-TZ5RS 96gb) should run at 8000 MT/s using XMP profiles, but only running at 4700 MHz with AI Overclock Tuner set to Auto.  If I try XMP 1 or 2, it won't boot and restarts in Safe mode.

I wanted to see if anyone else is having these issues before I start trying different voltages / timings.

I was going to try manually setting the memory freq to 8000 and CL40-48-48-128 1.35V, which is what G.Skill advertises for my memory.  Not sure what to try for the cpu to get that at least at 6 GHz, and I was hoping to be able to OC higher.

Other hardware includes AIO Asus water cooler, Gen5 M2 and Strix GeForce RTX 4090 Gaming.

I want to take it slow so not to damage anything, thus posting here for some advice.

UPDATE:  Do not buy the Dark Hero, several have returned it because unable to get stable OC.  Instead, buy the Apex Encore and Corsair memory.

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378 REPLIES 378

Thanks for posting this.
I have never disabled vmx.  Do you find that helps with memory stability for DDR5?  Or is it more to get a good CPU overclock?
I certainly don't need this virtualization on my gaming rig.

Rodine
Level 12

@Silent_Scone 

Replacement Dark Hero was delivered and this time there appears to be no physical damage. 

since I no longer need it the board will be going to a disabled veteran who is currently attending game design college courses. I previously built him an entire PC with an MSI MPG board. This will be a tremendous upgrade for him. 

Z790 Apex Encore, 14900KS, Antec F1, T705 2TB, Corsair Titanium 8200, Asus RTX 4090 OC STRIX, MSI MEG 1300w PSU, Corsair ICUE LINK 420mm, Acer Predator X38 S 177hz | Z790 Apex Encore, 14900K, Corsair Titanium 8200, T700 2TB, Corsair 1000w PSU, Corsair 5000D, Corsair ICUE LINK 360mm, Asus RTX 4090 TUF, Alienware 38" Curved 144hz

optiman
Level 11

@hellriver   Where did you get the i91400KS?  I didn't know it was available yet.

Amazing that you have 4 dims stable.  What are you testing to confirm stable?

I have not heard of the KS having been announced yet either. 

Z790 Apex Encore, 14900KS, Antec F1, T705 2TB, Corsair Titanium 8200, Asus RTX 4090 OC STRIX, MSI MEG 1300w PSU, Corsair ICUE LINK 420mm, Acer Predator X38 S 177hz | Z790 Apex Encore, 14900K, Corsair Titanium 8200, T700 2TB, Corsair 1000w PSU, Corsair 5000D, Corsair ICUE LINK 360mm, Asus RTX 4090 TUF, Alienware 38" Curved 144hz

I didn't. its KF sorry my mistake 😉

Tested with TM5, memtest, CinebenchR23, OCCT ,  All stable

using bios 0801? 

And memory is manually selected to 6600?

with a 7200 kit correct? Using XMP II 

Is this a work computer that requires you to run that much memory? just curious 

 

Z790 Apex Encore, 14900KS, Antec F1, T705 2TB, Corsair Titanium 8200, Asus RTX 4090 OC STRIX, MSI MEG 1300w PSU, Corsair ICUE LINK 420mm, Acer Predator X38 S 177hz | Z790 Apex Encore, 14900K, Corsair Titanium 8200, T700 2TB, Corsair 1000w PSU, Corsair 5000D, Corsair ICUE LINK 360mm, Asus RTX 4090 TUF, Alienware 38" Curved 144hz

Memory manually selected to 6600 with xmp ii

Bios 0507.  I did't tested 0807 yet. Maybe next week when I get time. I hope newest bios is better.

 

hellriver_2-1704908012694.png

 

 

 

 

Curious how this would bench wit AIDA64 memory benchmark 

You can download it for free through Armoury Crate under utilities 

 

 

Z790 Apex Encore, 14900KS, Antec F1, T705 2TB, Corsair Titanium 8200, Asus RTX 4090 OC STRIX, MSI MEG 1300w PSU, Corsair ICUE LINK 420mm, Acer Predator X38 S 177hz | Z790 Apex Encore, 14900K, Corsair Titanium 8200, T700 2TB, Corsair 1000w PSU, Corsair 5000D, Corsair ICUE LINK 360mm, Asus RTX 4090 TUF, Alienware 38" Curved 144hz

There you go

hellriver_0-1704908923342.png