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TIG Dec 27, 2024 @ 4:43am
Asus Rog Strix X870E-E EXPO Profile issue versus bios update
I had bios 0706 and found the EXPO profile does not give my 64 GB RAM full speed at 6400 MHz. Unfortunately RAM speed running at 3600 MHz only.

This morning, I updated the bios for the Motherboard to 0804 and found still EXPO profile issue not resolved. As the case in 0706, I need to stay with Bios default settings. So neither 0706 nor 0804 help to resolve the EXPO profile compatibility.

Then, I tried to go back to bios 0606 but could not. The Bios screen says: Bios version not Valid ...!!

I found the same case with people owning the same MB at ASUS forum.

Please Asus, do something for ASUS ROG STRIX 870E-E. It is supposed to be a high-end motherboard. Let us feel that.

TIG
Last edited by TIG; Dec 27, 2024 @ 4:44am
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Originally posted by BurakZG:
It's not my thought, I copied data from AMD website. It says, with 4 sticks RAM the processor supports the speed of 3600. No matter what kind of sticks you buy. You can overclock it a bit, but you will never get the speed you aim for.

Simple explanation. It is the CPU that is reading from RAM and writing to RAM. There are 2 buses between them, address and data. CPU sets the address it want's to read, the clock is ticking, after so many ticks the RAM sets the data on the data bus. The number of ticks is fixed. The RAM cannot do anything faster than CPU supports. When CPU needs to read some data, and it expects that data after 30 ticks of the clock, the data must be there exactly on that moment. It cannot be faster just because RAM can do.

In summary, your system works fine now.
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Showing 1-15 of 18 comments
_I_ Dec 27, 2024 @ 6:11am 
ddr 6400 = 3200mhz
ddr = freq x 2
#1
TIG Dec 27, 2024 @ 6:30am 
Originally posted by _I_:
ddr 6400 = 3200mhz
ddr = freq x 2

No. not like that. The number in Bios must show 6400 not 3600
#2
_I_ Dec 27, 2024 @ 6:36am 
post a cpuz validation link
http://www.cpuid.com/softwares/cpu-z.html
cpuz -> validate button -> submit button
it will open a browser, copy the url (address) and paste it here
#3
Phénomènes Mystiques Dec 27, 2024 @ 7:32am 
My question is: was BIOS revision 0606 working properly with the RAM? :csd2smile:
#4
_I_ Dec 27, 2024 @ 8:04am 
did you ever check with cpuz to verify the ram is running at the correct specs?
#5
C1REX Dec 27, 2024 @ 8:12am 
Originally posted by TIG:
Originally posted by _I_:
ddr 6400 = 3200mhz
ddr = freq x 2

No. not like that. The number in Bios must show 6400 not 3600
3600 is a weird number for DDR5.
Is it 2x32GB or 4x16GB?
#6
TIG Dec 27, 2024 @ 8:18am 
Originally posted by WinterSolstice:
My question is: was BIOS revision 0606 working properly with the RAM? :csd2smile:

When I purchased this MB, I started with 0706 not 0606
#7
TIG Dec 27, 2024 @ 8:19am 
Originally posted by C1REX:
Originally posted by TIG:

No. not like that. The number in Bios must show 6400 not 3600
3600 is a weird number for DDR5.
Is it 2x32GB or 4x16GB?

sorry for the confusion. it is 4x32GB RAM
#8
C1REX Dec 27, 2024 @ 8:32am 
Originally posted by TIG:
Originally posted by C1REX:
3600 is a weird number for DDR5.
Is it 2x32GB or 4x16GB?

sorry for the confusion. it is 4x32GB RAM
Oh. Then it’s close to impossible to make standard EXPO profile work with 4 RAM sticks.
CPU and its memory controller is the main limitation here.
Last edited by C1REX; Dec 27, 2024 @ 8:34am
#9
Phénomènes Mystiques Dec 27, 2024 @ 8:34am 
Originally posted by TIG:
Originally posted by WinterSolstice:
My question is: was BIOS revision 0606 working properly with the RAM? :csd2smile:

When I purchased this MB, I started with 0706 not 0606
Interesting, seems like the CPU's can support all revisions - one time, on AM4, I had to manually time the RAM until a newer revision was released (which seems fast and furious for this ASUS board here) - mine was not so fast on a release fix, ASRock. :csd2smile::badluck:

And then it happened again around the same time with the newer revsion, but re-flashing fixed that issue - oh, and then one time I forgot to enable "OC Power" option for the DRAM to get the XMP to work properly (but this was more, human error/oversight). :chirp:
Last edited by Phénomènes Mystiques; Dec 27, 2024 @ 8:38am
#10
TIG Dec 27, 2024 @ 8:39am 
It seems people thinking why I have 4x32 GB RAMs .... !!!

Please check this discussion I had before for the same MB:
https://steamcommunity.com/discussions/forum/11/634541994529522919/
#11
TIG Dec 27, 2024 @ 8:41am 
Originally posted by TIG:
It seems people thinking why I have 4x32 GB RAMs .... !!!

Please check this discussion I had before for the same MB:
https://steamcommunity.com/discussions/forum/11/634541994529522919/

With no doubt, Asus Rog Strix X870E-E , really needs more support from Asus.
#12
BurakZG Dec 27, 2024 @ 9:05am 
When it comes to RAM speed there is not so much dependent on motherboard. It is mostly the CPU and memory itself.
See specs of your CPU:
https://www.amd.com/en/products/processors/desktops/ryzen/9000-series/amd-ryzen-9-9950x.html

Max Memory Speed
2x1R DDR5-5600
2x2R DDR5-5600
4x1R DDR5-3600
4x2R DDR5-3600

What you describe above is perfectly normal.
#13
smokerob79 Dec 27, 2024 @ 9:10am 
Originally posted by TIG:
Originally posted by TIG:
It seems people thinking why I have 4x32 GB RAMs .... !!!

Please check this discussion I had before for the same MB:
https://steamcommunity.com/discussions/forum/11/634541994529522919/

With no doubt, Asus Rog Strix X870E-E , really needs more support from Asus.


they do not need anything.....you need to understand what you are doing before doing it......4 sticks will never support this speed.....
#14
TIG Dec 27, 2024 @ 9:15am 
Originally posted by BurakZG:
When it comes to RAM speed there is not so much dependent on motherboard. It is mostly the CPU and memory itself.
See specs of your CPU:
https://www.amd.com/en/products/processors/desktops/ryzen/9000-series/amd-ryzen-9-9950x.html

Max Memory Speed
2x1R DDR5-5600
2x2R DDR5-5600
4x1R DDR5-3600
4x2R DDR5-3600

What you describe above is perfectly normal.

Wait... Let me understand your thought here.
I have 4x32 GB RAM in which every RAM slot is engaged with one 32 GB. So total is 128 GB. I am engaging slots as follows:
DIMM A1 , DIMM A2 , DIMM B1 and DIMM B2

Each 32 GB stick is Corsair VENGEANCE DDR5 with 6400 MHz.

Would elaborate more in your though please?
#15
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Date Posted: Dec 27, 2024 @ 4:43am
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