PC won't boot with 96GB RAM on Asus X870E-E Gaming Wifi

[Davids777]

Hello,

I'm trying to run 96GB of RAM (2 x 32GB + 2 x 16GB) on an Asus X870E-E Gaming Wi-Fi motherboard, but I'm experiencing several issues :

- With all four sticks, I get a Q-LED error code (C5) and the PC won't boot.
- With three sticks, the PC boots without XMP, but the 6000MHz clock speed of my sticks decreases to 3600MHz. With XMP, the PC won't boot.
- With 2 sticks, everything works as expected with either kit and XMP enabled.

My hardware is as follows:

- Ryzen 9800X3D
- Asus X870E-E Gaming Wi-Fi (Bios 1203)
- 2 x NVMe Samsung 990 PRO
- RTX4090 SUPRIM X
- AIO Corsair H150i Cappelix
- PSU Corsair AX850 Titanium
- Both RAM kits are identical (Corsair Vengeance RGB 6000MHz CL30) with only a different capacity : 32GB vs. 64GB

As I imagine some will ask me why I want 96GB of RAM, here's the explanation: -> I don't need 96GB of RAM. I bought my PC for gaming with 32GB which is more than enough for that, but lately I've been getting into AI, upscaling and editing extremely large images. When I edit them with Affinity Photo, I experience slowdowns due to the memory being full. So I had to buy a 64GB kit to replace my insufficient 32GB, but why put my 32GB kit in a drawer when I could benefit from an additional 32GB ? The question is, is that possible ?

Thanks

[darkstar79]

On every tutorial about AM5 is info that;

1. You should not mix memory kits .

2. It's difficult to run a kit of 4 sticks without any problems with expo/xmp enabled .

Just use 2 with 64 or buy 2 with 96.

[nemen]

stick to 64 in dual channel, messing up your speed even if you got it to boot, the sluggish performance would be enough for me to put the other 2 sticks on ebay

[Davids777]

Thanks for answers guys, it's frustrating to have more 32 Go and can't use them on a motherboard with 4 slots and 192 Go limit... I'm already using 54 Go when editing various large files. Add 32 Go have an utility in my use case. It's really hard to make it work ?

[darkstar79]

As i said before , if you need more than 64 it's just to buy 96 kit in 2 bricks or one kit with 4 bricks (128) but you won't have any warranty that you'll get it running more than 3600 mt/s.

[Davids777]

As explained in my first post, I don't absolutely need 96GB, but I now have 96GB in my hands so I'm trying to make what I have work. I'm not going to buy or change the kit. At worst, I'll try to sell my 32GB but where I live, it's not easy

[nemen]

try Facebook marketplace or ebay, maybe there is something that you consider swapping for. mention it on Facebook and you might end up with even better value than the ram is worth.

[Draugrs]

I have always found even though some boards can accept 4 sticks of RAM it causes issues. It is always best in my experience of building systems to stick with two sticks of RAM in slots A2 and B2 for optimal performance. I believe mixing the sizes in your case also plays a part in issue. I have built some systems with 4 sticks but always in the same size such as 4x 32GB or 4x 16GB etc. Unless you are doing some high end video editing or something you truely only need 32GB some would even commit only 16GB. I think 32GB is cheap enough and provides a level of ease. Personally since I do some light video editing I run 64GB. I could probably get away with 32GB but I like to have a smidge more in the tank.

[Davids777]

I always had 4 sticks in my configurations but it was in DDR2 or DDR3, and everything worked well. I am disappointed by this new generation of motherboards and by DDR4. I loved my PC (X570-E Gaming + Ryzen 5900X), the PC was extremely stable and the sound card was integrated (without USB). I changed because I wanted a gaming PC with a Ryzen 9800x3D CPU but I regret this change honestly

[White_Reaper]

Everyone here is right with what they are saying, but I get this error with 2 Sticks each 16gb too.

I have the Corsair Titanium  Memory kit cl30 32gb 6000mhz (from the QVL) and if I choose "auto" or "manual" my mainboard spits the C5 error code.

I have to take out the stick that wont let me boot, boot into bios, choose expo 1, let the memory stick train and after that I put the memory stick back in.

(Also with the newest 1303 bios update)