Asus ROG Strix x670e-e Gaming Wifi with 128Gb/192Gb RAM at 5000 MT/s or more

[vebba]

I have an Asus ROG Strix x670e-e Gaming Wifi, with 64Gb RAM (Corsair Vengeance RGB DDR5 RAM 64GB (2x32GB) 6000MT/s CL40 AMD EXPO (CMH64GX5M2B6000Z40). In case it's relevant, CPU is AMD Ryzen 9 7950X and GPU is Asus TUF RTX 4090 OC.

I have read a lot of reports that increasing the RAM on that motherboard is unstable and requires to disable EXPO and make it run at a lower speed like 3600 or something like that.

But I have also read reports of people who successfully run 128Gb or even 192Gb (using 48Gb sticks) at 5000 or 5200.

If someone has managed to successfully do that, could you please post what version of the Bios are you using, the exact part number and make/model of the RAM you used, and if you had to change any config settings in the BIOS?

Also, would it work if I initially installed 2 additional 48Gb sticks, for a total of 160Gb RAM (2x48Gb + 2x32Gb) or the RAM sticks need to be the same size?

Thank you

[Silent_Scone]

Hi Vebba,

Unfortunately, nobody is going to give you the reassurance you're looking for. Running with that many DIMMs/Ranks is going to limit the frequency range. Inspect the QVL for your board to see where the max validation is for the density you wish to run.


Please note that for best chance of "plug and play" overclocking, opt for kits with 2 to 3 bins below the maximum validated frequency. Please note that combining memory kits is not supported by memory or board vendor, you can read more information here.

[Rob_Ainscough]

I know your just trying to help, but EXPO is an AMD specification and it isn't related to "overclocking", it's a relationship of how fast the memory can operate at which is an independent frequency of CPU (they don't operate on the same clock frequency).  If ASUS claim to support AMD and the EXPO specification, then it is the responsibility of ASUS to ensure the specification is supported in ALL 4 slot they provide.  There is NOTHING in any ASUS manual or pre-sales or anywhere else that indicates only 2 memory modules can be used at EXPO configuration.  If you can find such a statement, please show me where in the manual?

Anyway, the issue with my ASUS MB is that ONLY slot 1 and 3 work regardless of EXPO, Manual, Auto setting ... any additional RAM modules (same exact brand/spec) in slot 2 and 4 will fail to post.  This is MOST definitely an ASUS motherboard engineering problem not a RAM problem.

If you want proof in point, I have 4 computers in a RACK mount system (5U units) and my MSI X670E Gaming Plus Wifi motherboard supports all 4 G.Skill memory modules at rated EXPO settings for 128GB total.  These are the EXACT same memory modules that will NOT work in my ASUS 670E.

I was extremely disappointed by ASUS support who refused RMA and basically told me what you linked to ... sorry but this IS not acceptable.  I no longer buy ASUS products because of this situation and have moved to other vendors like MSI and Gigabyte ... keep in mind I'm a LONG time ASUS consumer going back decades.  I've championed ASUS products for a long time so switch to other manufacturers is not something rash.

Rob.

[drkarl]

 Who is vebba and why did he copy my reddit post ( https://www.reddit.com/r/ASUS/comments/1dsxb9d/asus_rog_strix_x670ee_gaming_wifi_with_128gb192gb/) and posted it at his own on this forum??

[Rob_Ainscough]

I have a very similar problem, I tried to upgrade from 2X32GB DDR5 modules listed in QVL to 4X32GB DDR5 modules and my system would NOT boot ... kept coming back with red light on CPU.  I tried the very same memory modules in Slot 2 and 4 and my system would not boot.  My modules would ONLY boot in Slot 1 and 3.  There is clearly something defective in my motherboard.

I contacted ASUS for RMA and they refused.  They did say I could send the board in for repair and they would charge me accordingly.  I posted here about my issue: 

https://rog-forum.asus.com/t5/amd-600-series/bad-memory-slots-in-asus-tuf-gaming-x670e-plus-wifi/td-...

RE: Gamer Nexus, there appears to be some issues with ASUS support and there might be a class action lawsuit.

This is definitely a defective part and I should have been issued an RMA.

Rob.