Question DDR5 32GB 7200 RAM on MAXIMUS Z790 Hero

Jan 16, 2023
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My 4th build with CPPC, just placed an order yesterday.

CHASSIS: CORSAIR ICUE 7000X RGB
CPU: Intel® Core™ Processor i9-13900KS
AIO: CORSAIR iCUE H170i ELITE 420mm LCD
SSD: 1TB SAMSUNG 990 PRO M.2
SSD: 2TB Samsung 870 QVO-Series
RAM: DOMINATOR® PLATINUM RGB 32GB (2x16GB) DDR5 DRAM 7200MHz C34 (bought separate)
MOTHERBOARD: ASUS ROG MAXIMUS Z790 HERO DDR5
PSU: 1200W Thermaltake Toughpower GF3 80+ GOLDGPU: GeForce RTX™ 4090 24GB GDDR6X

I'm thinking to ask CPPC to install the latest BIOS update (0183) for the MAXIMUS Z790 Hero, but then I saw this! This guy had problems running 32GB 7200 RAM on the latest BIOS updated: https://rog.asus.com/forum/showthread.php?131874-Z790-Hero-BIOS-downgrade&p=882197 !

I bought 7200MHz C34 separately and will install myself when my PC arrives. Does anyone have the MAXIMUS Z790 Hero on the latest BIOS with 7200 RAM? Is this a common issue?
 

zx128k

Reputable
Its not normally a matter of just setting xmp to DDR5 7200 you may have to tweak the timings and voltages yourself. You should check for the RAM kit in your motherboards memory QVL. Just because one CPU's IMC runs DDR5 7200 won't mean another CPUs IMC will be happy. Basically above 6000 its tends to get less plug and play.
 
Jan 16, 2023
4
0
10
Its not normally a matter of just setting xmp to DDR5 7200 you may have to tweak the timings and voltages yourself. You should check for the RAM kit in your motherboards memory QVL. Just because one CPU's IMC runs DDR5 7200 won't mean another CPUs IMC will be happy. Basically above 6000 its tends to get less plug and play.

I have confirmed with a couple of people that this Corsair 32GB 7200 runs at full 7200 on this board with XMP enabled. That RAM is also listed on QVL https://rog.asus.com/motherboards/rog-maximus/rog-maximus-z790-hero-model/helpdesk_qvl_memory/ . However what's confusing me is why this other guy had issues after updating to latest BIOS version of the board!
 

zx128k

Reputable
I have confirmed with a couple of people that this Corsair 32GB 7200 runs at full 7200 on this board with XMP enabled. That RAM is also listed on QVL https://rog.asus.com/motherboards/rog-maximus/rog-maximus-z790-hero-model/helpdesk_qvl_memory/ . However what's confusing me is why this other guy had issues after updating to latest BIOS version of the board!
Because the BIOS sets the voltages and timings. Different CPUs have different quality memory controllers. So the range of values that work can change from CPU to CPU.
 
I'm running 32GB (2x16GB) of Corsair Dominator Platinum RGB DDR5-7600 on my system.
Asus ROG Z790 Maximus Hero with latest BIOS.
I was running 32GB (2x16GB) of G.Skill Trident Z5 DDR5-7800, until Corsair came out with the DDR5-7200 and higher line of Dominator RAM.
No issues, other than you can't run 64GB, or 2 kits of 32GB RAM. I have a post about this.
 

zx128k

Reputable
I'm running 32GB (2x16GB) of Corsair Dominator Platinum RGB DDR5-7600 on my system.
Asus ROG Z790 Maximus Hero with latest BIOS.
I was running 32GB (2x16GB) of G.Skill Trident Z5 DDR5-7800, until Corsair came out with the DDR5-7200 and higher line of Dominator RAM.
No issues, other than you can't run 64GB, or 2 kits of 32GB RAM. I have a post about this.
The more RAM, ranks etc. The harder on the memory controller etc. I got DDR4-4200 with 4xDIMMs on a motherobard that only supports 4xDIMMs as DDR4-3600. Basically that is ment to be the hard limit. On the system before that one I couldn't boot above DDR4-3600 with 4xDIMMs.

The higher you push the frequency, the more you hope you have that good memory controller and motherboard. I have seen people just set the xmp and be fine. Others not so lucky.
 

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