Need help with RAM timing (G.Skill Trident Z5 2x48GB on ASUS Crosshair X670E Hero)

C

chiu

Limp Gawd
Joined
Sep 14, 2011
Messages
344
I have to install this pair of high-density RAMs to this motherboard. But the RAM has no AMD EXPO. Does anyone succeed in manually entering the memory timing in the BIOS?

- RAM: G.Skill Trident Z5 RGB Series (Intel XMP) 96GB (2 x 48GB) 288-Pin DDR5 6400 CL32-39-39-102 1.35V F5-6400J3239F48GX2-TZ5RS
https://www.amazon.com/gp/product/B0C2B57F5P/ref=ppx_yo_dt_b_asin_title_o05_s01?ie=UTF8&psc=1

- Motherboard: ASUS ROG Crosshair X670E Hero
https://www.amazon.com/ASUS-ROG-X67...E+Hero&qid=1692393572&sprefix=,aps,882&sr=8-1

- CPU: AMD Ryzen 7950x3d CPU


Thanks in advance.
 
As an Amazon Associate, HardForum may earn from qualifying purchases.
not that ive seen around here...
since youve got it, try it. also dont be surprised if it need a little more voltage.
 
chiu said:
I have to install this pair of high-density RAMs to this motherboard. But the RAM has no AMD EXPO. Does anyone succeed in manually entering the memory timing in the BIOS?

- RAM: G.Skill Trident Z5 RGB Series (Intel XMP) 96GB (2 x 48GB) 288-Pin DDR5 6400 CL32-39-39-102 1.35V F5-6400J3239F48GX2-TZ5RS
https://www.amazon.com/gp/product/B0C2B57F5P/ref=ppx_yo_dt_b_asin_title_o05_s01?ie=UTF8&psc=1

- Motherboard: ASUS ROG Crosshair X670E Hero
https://www.amazon.com/ASUS-ROG-X67...E+Hero&qid=1692393572&sprefix=,aps,882&sr=8-1

- CPU: AMD Ryzen 7950x3d CPU


Thanks in advance.
Click to expand...
Many AM5 motherboards can use XMP.

You should be able to load the XMP profile. But, you may have to lower the speed to 6000, for it to be stable with a 1:1 ratio on the infinity fabric.

Here is a good video, which shows good, achievable timings for AMD, provided by Buildzoid. I used Buildzoid's Intel timings, for my own Intel PC.

View: https://youtu.be/MOatIQuQo3s
 
As an Amazon Associate, HardForum may earn from qualifying purchases.
chameleoneel said:
Many AM5 motherboards can use XMP.

You should be able to load the XMP profile. But, you may have to lower the speed to 6000, for it to be stable with a 1:1 ratio on the infinity fabric.

Here is a good video, which shows good, achievable timings for AMD, provided by Buildzoid. I used Buildzoid's Intel timings, for my own Intel PC.

View: https://youtu.be/MOatIQuQo3s
Click to expand...


Sadly, I have already bought the ASUS motherboard. I will have to stick with it.

It would be greatly appreciated if someone could post the memory timings of this particular high-density RAM on any motherboard. I will start tuning from there.

Thanks for the tip about lowering the RAM speed to 6000Ghz to do gear 1 timing. I will conduct some experiments to see whether it is true and report the results here.
 
Last edited:
chiu said:
Sadly, I have already bought the ASUS motherboard. I will have to stick with it.

It would be greatly appreciated if someone could post the memory timings of this particular high-density RAM on any motherboard. I will start tuning from there.

Thanks for the tip about lowering the RAM speed to 6000Ghz to do gear 1 timing. I will conduct some experiments to see whether it is true and report the results here.
Click to expand...
That Asus board won't load the XMP profile? If True, that's a bummer. I briefly used an MSI board for AM5, and it could use XMP.

Checkout that video, they post really good RAM Timings, provided by Buildzoid. If you can get your RAM to run with those timings, it will perform better than any XMP/EXPO profile.

If you can't get those timings to work. Try dropping it to DDR5 5600. It will still be faster. You can see the results in that video.

All of the other timings in your motherboard, which aren't shown in buildzoid's timings, will be trained/optimized by your motherboard, after you reboot.
 
Last edited:
chiu said:
Sadly, I have already bought the ASUS motherboard. I will have to stick with it.

It would be greatly appreciated if someone could post the memory timings of this particular high-density RAM on any motherboard. I will start tuning from there.

Thanks for the tip about lowering the RAM speed to 6000Ghz to do gear 1 timing. I will conduct some experiments to see whether it is true and report the results here.
Click to expand...
What is the correlation between the RAM and you MB? I don't get the sadly you already bought it comment.
Have you tried any of the suggestions yet?
Did XMP profile work or not?
 
FWIW Asus doesn't list XMP in the BIOS. What you're looking for is DOCP, enabling that should allow it to run at the XMP profile.
 
Dopamin3 said:
FWIW Asus doesn't list XMP in the BIOS. What you're looking for is DOCP, enabling that should allow it to run at the XMP profile.
Click to expand...
Thank you for the tip. I will look into this once the motherboard arrives.
 
Everything I've read says AMD does not play well with 24/48GB DIMMs
As in, its newsworthy if it even POSTs with them.
 
KazeoHin said:
Everything I've read says AMD does not play well with 24/48GB DIMMs
As in, its newsworthy if it even POSTs with them.
Click to expand...
Even after the new AGESA bios update, which is supposed to be a game changer for RAM on AM5?
 
chiu said:
I have to install this pair of high-density RAMs to this motherboard. But the RAM has no AMD EXPO. Does anyone succeed in manually entering the memory timing in the BIOS?

- RAM: G.Skill Trident Z5 RGB Series (Intel XMP) 96GB (2 x 48GB) 288-Pin DDR5 6400 CL32-39-39-102 1.35V F5-6400J3239F48GX2-TZ5RS
https://www.amazon.com/gp/product/B0C2B57F5P/ref=ppx_yo_dt_b_asin_title_o05_s01?ie=UTF8&psc=1

- Motherboard: ASUS ROG Crosshair X670E Hero
https://www.amazon.com/ASUS-ROG-X67...E+Hero&qid=1692393572&sprefix=,aps,882&sr=8-1

- CPU: AMD Ryzen 7950x3d CPU


Thanks in advance.
Click to expand...

As someone else mentioned, it may be labeled "DOCP" in BIOS. I've got a different board and socket (Asus Prime B550-PLUS, AM4), but I enter DOCP/XMP voltage and primary timings manually without issues. Should work for you.
 
As an Amazon Associate, HardForum may earn from qualifying purchases.
You must log in or register to reply here.
Back
Top